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# New commits in x86/urgent:
581a8b7b1e1e ("mm: Remove tlb_flush_reason::NR_TLB_FLUSH_REASONS from <linux/mm_types.h>")
2d130eeeaff6 ("x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h>")
d63bc9210ba0 ("x86/sgx: Remove unmatched quote in __sgx_encl_extend function comment")
4368a3b96c42 ("x86/acpi/boot: Correct acpi_is_processor_usable() check again")
ac87efcf9e42 ("x86/boot/Documentation: Fix whitespace noise in boot.rst")
c8161e5304ab ("x86/fpu: Fix FPU state core dump truncation on CPUs with no extended xfeatures")
5288176a5412 ("x86/boot/Documentation: Fix htmldocs build warning due to malformed table in boot.rst")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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# New commits in perf/urgent:
9415f749d34b ("perf/x86/intel: Fix NULL event dereference crash in handle_pmi_common()")
c418d8b4d7a4 ("perf/core: Fix missing read event generation on task exit")
01439286514c ("perf/x86/amd/uncore: Fix the return value of amd_uncore_df_event_init() on error")
92546f6b523b ("perf/uprobes: Remove <space><Tab> whitespace noise")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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handle_pmi_common() may observe an active bit set in cpuc->active_mask
while the corresponding cpuc->events[] entry has already been cleared,
which leads to a NULL pointer dereference.
This can happen when interrupt throttling stops all events in a group
while PEBS processing is still in progress. perf_event_overflow() can
trigger perf_event_throttle_group(), which stops the group and clears
the cpuc->events[] entry, but the active bit may still be set when
handle_pmi_common() iterates over the events.
The following recent fix:
7e772a93eb61 ("perf/x86: Fix NULL event access and potential PEBS record loss")
moved the cpuc->events[] clearing from x86_pmu_stop() to x86_pmu_del() and
relied on cpuc->active_mask/pebs_enabled checks. However,
handle_pmi_common() can still encounter a NULL cpuc->events[] entry
despite the active bit being set.
Add an explicit NULL check on the event pointer before using it,
to cover this legitimate scenario and avoid the NULL dereference crash.
Fixes: 7e772a93eb61 ("perf/x86: Fix NULL event access and potential PEBS record loss")
Reported-by: kitta <kitta@linux.alibaba.com>
Co-developed-by: kitta <kitta@linux.alibaba.com>
Signed-off-by: Evan Li <evan.li@linux.alibaba.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20251212084943.2124787-1-evan.li@linux.alibaba.com
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220855
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There is no opening quote. Remove the unmatched closing quote.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Link: https://patch.msgid.link/20251210125628.544916-1-thorsten.blum@linux.dev
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ACPI v6.3 defined a new "Online Capable" MADT LAPIC flag. This bit is
used in conjunction with the "Enabled" MADT LAPIC flag to determine if
a CPU can be enabled/hotplugged by the OS after boot.
Before the new bit was defined, the "Enabled" bit was explicitly
described like this (ACPI v6.0 wording provided):
"If zero, this processor is unusable, and the operating system
support will not attempt to use it"
This means that CPU hotplug (based on MADT) is not possible. Many BIOS
implementations follow this guidance. They may include LAPIC entries in
MADT for unavailable CPUs, but since these entries are marked with
"Enabled=0" it is expected that the OS will completely ignore these
entries.
However, QEMU will do the same (include entries with "Enabled=0") for
the purpose of allowing CPU hotplug within the guest.
Comment from QEMU function pc_madt_cpu_entry():
/* ACPI spec says that LAPIC entry for non present
* CPU may be omitted from MADT or it must be marked
* as disabled. However omitting non present CPU from
* MADT breaks hotplug on linux. So possible CPUs
* should be put in MADT but kept disabled.
*/
Recent Linux topology changes broke the QEMU use case. A following fix
for the QEMU use case broke bare metal topology enumeration.
Rework the Linux MADT LAPIC flags check to allow the QEMU use case only
for guests and to maintain the ACPI spec behavior for bare metal.
Remove an unnecessary check added to fix a bare metal case introduced by
the QEMU "fix".
[ bp: Change logic as Michal suggested. ]
Fixes: fed8d8773b8e ("x86/acpi/boot: Correct acpi_is_processor_usable() check")
Fixes: f0551af02130 ("x86/topology: Ignore non-present APIC IDs in a present package")
Closes: https://lore.kernel.org/r/20251024204658.3da9bf3f.michal.pecio@gmail.com
Reported-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Michal Pecio <michal.pecio@gmail.com>
Tested-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20251111145357.4031846-1-yazen.ghannam@amd.com
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Zero can be a valid value of num_records. For example, on Intel Atom x6425RE,
only x87 and SSE are supported (features 0, 1), and fpu_user_cfg.max_features
is 3. The for_each_extended_xfeature() loop only iterates feature 2, which is
not enabled, so num_records = 0. This is valid and should not cause core dump
failure.
The issue is that dump_xsave_layout_desc() returns 0 for both genuine errors
(dump_emit() failure) and valid cases (no extended features). Use negative
return values for errors and only abort on genuine failures.
Fixes: ba386777a30b ("x86/elf: Add a new FPU buffer layout info to x86 core files")
Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20251210000219.4094353-2-yongxin.liu@windriver.com
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Pull csky updates from Guo Ren:
- Remove compile warning for CONFIG_SMP
- Fix __ASSEMBLER__ typo in headers
- Fix csky_cmpxchg_fixup
* tag 'csky-for-linus-6.19' of https://github.com/c-sky/csky-linux:
csky: Remove compile warning for CONFIG_SMP
csky: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi header
csky: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers
csky: fix csky_cmpxchg_fixup not working
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
"Just cleanups and fixes"
* tag 'mips_6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: Fix whitespace damage in r4k_wait from VS timer fix
mips: kvm: simplify kvm_mips_deliver_interrupts()
MIPS: alchemy: mtx1: switch to static device properties
mips: Remove __GFP_HIGHMEM masking
MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits
MIPS: dts: Always descend vendor subdirectories
mips: configs: loongson1: Update defconfig
MIPS: Fix HOTPLUG_PARALLEL dependency
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git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-auto
Pull __auto_type to auto conversion from Peter Anvin:
"Convert '__auto_type' to 'auto', defining a macro for 'auto' unless
C23+ is in use"
* tag 'auto-type-conversion-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-auto:
tools/virtio: replace "__auto_type" with "auto"
selftests/bpf: replace "__auto_type" with "auto"
arch/x86: replace "__auto_type" with "auto"
arch/nios2: replace "__auto_type" and adjacent equivalent with "auto"
fs/proc: replace "__auto_type" with "const auto"
include/linux: change "__auto_type" to "auto"
compiler_types.h: add "auto" as a macro for "__auto_type"
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If amd_uncore_event_init() fails, return an error irrespective of the
pmu_version. Setting hwc->config should be safe even if there is an
error so use this opportunity to simplify the code.
Closes: https://lore.kernel.org/all/aTaI0ci3vZ44lmBn@stanley.mountain/
Fixes: d6389d3ccc13 ("perf/x86/amd/uncore: Refactor uncore management")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/076935e23a70335d33bd6e23308b75ae0ad35ba2.1765268667.git.sandipan.das@amd.com
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Replace instances of "__auto_type" with "auto" in:
arch/x86/include/asm/bug.h
arch/x86/include/asm/string_64.h
arch/x86/include/asm/uaccess_64.h
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
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Replace uses of "__auto_type" in arch/nios2/include/asm/uaccess.h with
"auto", and equivalently convert an adjacent cast to the analogous
form.
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Enhancements to Linux as the root partition for Microsoft Hypervisor:
- Support a new mode called L1VH, which allows Linux to drive the
hypervisor running the Azure Host directly
- Support for MSHV crash dump collection
- Allow Linux's memory management subsystem to better manage guest
memory regions
- Fix issues that prevented a clean shutdown of the whole system on
bare metal and nested configurations
- ARM64 support for the MSHV driver
- Various other bug fixes and cleanups
- Add support for Confidential VMBus for Linux guest on Hyper-V
- Secure AVIC support for Linux guests on Hyper-V
- Add the mshv_vtl driver to allow Linux to run as the secure kernel in
a higher virtual trust level for Hyper-V
* tag 'hyperv-next-signed-20251207' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (58 commits)
mshv: Cleanly shutdown root partition with MSHV
mshv: Use reboot notifier to configure sleep state
mshv: Add definitions for MSHV sleep state configuration
mshv: Add support for movable memory regions
mshv: Add refcount and locking to mem regions
mshv: Fix huge page handling in memory region traversal
mshv: Move region management to mshv_regions.c
mshv: Centralize guest memory region destruction
mshv: Refactor and rename memory region handling functions
mshv: adjust interrupt control structure for ARM64
Drivers: hv: use kmalloc_array() instead of kmalloc()
mshv: Add ioctl for self targeted passthrough hvcalls
Drivers: hv: Introduce mshv_vtl driver
Drivers: hv: Export some symbols for mshv_vtl
static_call: allow using STATIC_CALL_TRAMP_STR() from assembly
mshv: Extend create partition ioctl to support cpu features
mshv: Allow mappings that overlap in uaddr
mshv: Fix create memory region overlap check
mshv: add WQ_PERCPU to alloc_workqueue users
Drivers: hv: Use kmalloc_array() instead of kmalloc()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big set of tty/serial driver changes for 6.19-rc1. Nothing
major at all, just small constant churn to make the tty layer
"cleaner" as well as serial driver updates and even a new test added!
Included in here are:
- More tty/serial cleanups from Jiri
- tty tiocsti test added to hopefully ensure we don't regress in this
area again
- sc16is7xx driver updates
- imx serial driver updates
- 8250 driver updates
- new hardware device ids added
- other minor serial/tty driver cleanups and tweaks
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (60 commits)
serial: sh-sci: Fix deadlock during RSCI FIFO overrun error
dt-bindings: serial: rsci: Drop "uart-has-rtscts: false"
LoongArch: dts: Add uart new compatible string
serial: 8250: Add Loongson uart driver support
dt-bindings: serial: 8250: Add Loongson uart compatible
serial: 8250: add driver for KEBA UART
serial: Keep rs485 settings for devices without firmware node
serial: qcom-geni: Enable Serial on SA8255p Qualcomm platforms
serial: qcom-geni: Enable PM runtime for serial driver
serial: sprd: Return -EPROBE_DEFER when uart clock is not ready
tty: serial: samsung: Declare earlycon for Exynos850
serial: icom: Convert PCIBIOS_* return codes to errnos
serial: 8250-of: Fix style issues in 8250_of.c
serial: add support of CPCI cards
serial: mux: Fix kernel doc for mux_poll()
tty: replace use of system_unbound_wq with system_dfl_wq
serial: 8250_platform: simplify IRQF_SHARED handling
serial: 8250: make share_irqs local to 8250_platform
serial: 8250: move skip_txen_test to core
serial: drop SERIAL_8250_DEPRECATED_OPTIONS
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc/IIO driver updates from Greg KH:
"Here is the big set of char/misc/iio driver updates for 6.19-rc1. Lots
of stuff in here including:
- lots of IIO driver updates, cleanups, and additions
- large interconnect driver changes as they get converted over to a
dynamic system of ids
- coresight driver updates
- mwave driver updates
- binder driver updates and changes
- comedi driver fixes now that the fuzzers are being set loose on
them
- nvmem driver updates
- new uio driver addition
- lots of other small char/misc driver updates, full details in the
shortlog
All of these have been in linux-next for a while now"
* tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (304 commits)
char: applicom: fix NULL pointer dereference in ac_ioctl
hangcheck-timer: fix coding style spacing
hangcheck-timer: Replace %Ld with %lld
hangcheck-timer: replace printk(KERN_CRIT) with pr_crit
uio: Add SVA support for PCI devices via uio_pci_generic_sva.c
dt-bindings: slimbus: fix warning from example
intel_th: Fix error handling in intel_th_output_open
misc: rp1: Fix an error handling path in rp1_probe()
char: xillybus: add WQ_UNBOUND to alloc_workqueue users
misc: bh1770glc: use pm_runtime_resume_and_get() in power_state_store
misc: cb710: Fix a NULL vs IS_ERR() check in probe()
mux: mmio: Add suspend and resume support
virt: acrn: split acrn_mmio_dev_res out of acrn_mmiodev
greybus: gb-beagleplay: Fix timeout handling in bootloader functions
greybus: add WQ_PERCPU to alloc_workqueue users
char/mwave: drop typedefs
char/mwave: drop printk wrapper
char/mwave: remove printk tracing
char/mwave: remove unneeded fops
char/mwave: remove MWAVE_FUTZ_WITH_OTHER_DEVICES ifdeffery
...
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture updates from Helge Deller:
"A fix which allows booting on the very old 710 workstations, and two
fixes in the syscall entry/exit path which allow to execute 64-bit
userspace binaries.
Note that although we currently have a 64-bit (static) kernel to allow
more than 4 GB physical RAM, there is no support for 64-bit userspace
for parisc-linux yet, but Dave and Sven are making slowly progress to
port and fix glibc and gcc.
Summary:
- Fix boot on 710 workstation by not reprogramming ASP chip
- Fix 64bit userspace syscalls (64-bit userspace is still being
developed)
- minor code cleanups in asm/bug.h and perf_regs.c"
* tag 'parisc-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Do not reprogram affinitiy on ASP chip
parisc: Drop linux/kernel.h include from asm/bug.h header
parisc: remove unneeded semicolon in perf_regs.c
parisc: entry.S: fix space adjustment on interruption for 64-bit userspace
parisc: entry: set W bit for !compat tasks in syscall_restore_rfi()
parisc: Drop padding fields and layers entries from inventory log
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
fixes a build issue and does some cleanup in ib/sys_info.c
- "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
enhances the 64-bit math code on behalf of a PWM driver and beefs up
the test module for these library functions
- "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
makes BPF symbol names, sizes, and line numbers available to the GDB
debugger
- "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
adds a sysctl which can be used to cause additional info dumping when
the hung-task and lockup detectors fire
- "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
adds a general base64 encoder/decoder to lib/ and migrates several
users away from their private implementations
- "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
makes TCP a little faster
- "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
reworks the KEXEC Handover interfaces in preparation for Live Update
Orchestrator (LUO), and possibly for other future clients
- "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
increases the flexibility of KEXEC Handover. Also preparation for LUO
- "Live Update Orchestrator" (Pasha Tatashin)
is a major new feature targeted at cloud environments. Quoting the
cover letter:
This series introduces the Live Update Orchestrator, a kernel
subsystem designed to facilitate live kernel updates using a
kexec-based reboot. This capability is critical for cloud
environments, allowing hypervisors to be updated with minimal
downtime for running virtual machines. LUO achieves this by
preserving the state of selected resources, such as memory,
devices and their dependencies, across the kernel transition.
As a key feature, this series includes support for preserving
memfd file descriptors, which allows critical in-memory data, such
as guest RAM or any other large memory region, to be maintained in
RAM across the kexec reboot.
Mike Rappaport merits a mention here, for his extensive review and
testing work.
- "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
moves the kexec and kdump sysfs entries from /sys/kernel/ to
/sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day
- "kho: fixes for vmalloc restoration" (Mike Rapoport)
fixes a BUG which was being hit during KHO restoration of vmalloc()
regions
* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
calibrate: update header inclusion
Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
vmcoreinfo: track and log recoverable hardware errors
kho: fix restoring of contiguous ranges of order-0 pages
kho: kho_restore_vmalloc: fix initialization of pages array
MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
init: replace simple_strtoul with kstrtoul to improve lpj_setup
KHO: fix boot failure due to kmemleak access to non-PRESENT pages
Documentation/ABI: new kexec and kdump sysfs interface
Documentation/ABI: mark old kexec sysfs deprecated
kexec: move sysfs entries to /sys/kernel/kexec
test_kho: always print restore status
kho: free chunks using free_page() instead of kfree()
selftests/liveupdate: add kexec test for multiple and empty sessions
selftests/liveupdate: add simple kexec-based selftest for LUO
selftests/liveupdate: add userspace API selftests
docs: add documentation for memfd preservation via LUO
mm: memfd_luo: allow preserving memfd
liveupdate: luo_file: add private argument to store runtime state
mm: shmem: export some functions to internal.h
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Miscellaneous documentation fixes"
* tag 'x86-urgent-2025-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/Documentation: Prefix hexadecimal literals with 0x
x86/boot/Documentation: Spell 'ID' consistently
x86/platform: Fix and extend kernel-doc comments in <asm/x86_init.h>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar:
"Address various objtool scalability bugs/inefficiencies exposed by
allmodconfig builds, plus improve the quality of alternatives
instructions generated code and disassembly"
* tag 'objtool-urgent-2025-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Simplify .annotate_insn code generation output some more
objtool: Add more robust signal error handling, detect and warn about stack overflows
objtool: Remove newlines and tabs from annotation macros
objtool: Consolidate annotation macros
x86/asm: Remove ANNOTATE_DATA_SPECIAL usage
x86/alternative: Remove ANNOTATE_DATA_SPECIAL usage
objtool: Fix stack overflow in validate_branch()
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git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
Pull dma-mapping updates from Marek Szyprowski:
- More DMA mapping API refactoring to physical addresses as the primary
interface instead of page+offset parameters.
This time dma_map_ops callbacks are converted to physical addresses,
what in turn results also in some simplification of architecture
specific code (Leon Romanovsky and Jason Gunthorpe)
- Clarify that dma_map_benchmark is not a kernel self-test, but
standalone tool (Qinxin Xia)
* tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
dma-mapping: remove unused map_page callback
xen: swiotlb: Convert mapping routine to rely on physical address
x86: Use physical address for DMA mapping
sparc: Use physical address DMA mapping
powerpc: Convert to physical address DMA mapping
parisc: Convert DMA map_page to map_phys interface
MIPS/jazzdma: Provide physical address directly
alpha: Convert mapping routine to rely on physical address
dma-mapping: remove unused mapping resource callbacks
xen: swiotlb: Switch to physical address mapping callbacks
ARM: dma-mapping: Switch to physical address mapping callbacks
ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*()
dma-mapping: convert dummy ops to physical address mapping
dma-mapping: prepare dma_map_ops to conversion to physical address
tools/dma: move dma_map_benchmark from selftests to tools/dma
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Pull bitmap updates from Yury Norov:
- Runtime field_{get,prep}() (Geert)
- Rust ID pool updates (Alice)
- min_t() simplification (David)
- __sw_hweightN kernel-doc fixes (Andy)
- cpumask.h headers cleanup (Andy)
* tag 'bitmap-for-6.19' of github.com:/norov/linux: (32 commits)
rust_binder: use bitmap for allocation of handles
rust: id_pool: do not immediately acquire new ids
rust: id_pool: do not supply starting capacity
rust: id_pool: rename IdPool::new() to with_capacity()
rust: bitmap: add BitmapVec::new_inline()
rust: bitmap: add MAX_LEN and MAX_INLINE_LEN constants
cpumask: Don't use "proxy" headers
soc: renesas: Use bitfield helpers
clk: renesas: Use bitfield helpers
ALSA: usb-audio: Convert to common field_{get,prep}() helpers
soc: renesas: rz-sysc: Convert to common field_get() helper
pinctrl: ma35: Convert to common field_{get,prep}() helpers
iio: mlx90614: Convert to common field_{get,prep}() helpers
iio: dac: Convert to common field_prep() helper
gpio: aspeed: Convert to common field_{get,prep}() helpers
EDAC/ie31200: Convert to common field_get() helper
crypto: qat - convert to common field_get() helper
clk: at91: Convert to common field_{get,prep}() helpers
bitfield: Add non-constant field_{prep,get}() helpers
bitfield: Add less-checking __FIELD_{GET,PREP}()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Arch Topology:
- Move parse_acpi_topology() from arm64 to common code for reuse in
RISC-V
CPU:
- Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
- Print a newline (or 0x0A) instead of '(null)' reading
/sys/devices/system/cpu/nohz_full when nohz_full= is not set
debugfs
- Remove (broken) 'no-mount' mode
- Remove redundant access mode checks in debugfs_get_tree() and
debugfs_create_*() functions
Devres:
- Remove unused devm_free_percpu() helper
- Move devm_alloc_percpu() from device.h to devres.h
Firmware Loader:
- Replace simple_strtol() with kstrtoint()
- Do not call cancel_store() when no upload is in progress
kernfs:
- Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
- Fix a missing unwind path in __kernfs_new_node()
Misc:
- Increase the name size in struct auxiliary_device_id to 40
characters
- Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
alloc_workqueue()
Platform:
- Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap
functions
Rust:
- Auxiliary:
- Unregister auxiliary device on parent device unbind
- Move parent() to impl Device; implement device context aware
parent() for Device<Bound>
- Illustrate how to safely obtain a driver's device private data
when calling from an auxiliary driver into the parant device
driver
- DebugFs:
- Implement support for binary large objects
- Device:
- Let probe() return the driver's device private data as pinned
initializer, i.e. impl PinInit<Self, Error>
- Implement safe accessor for a driver's device private data for
Device<Bound> (returned reference can't out-live driver binding
and guarantees the correct private data type)
- Implement AsBusDevice trait, to be used by class device
abstractions to derive the bus device type of the parent device
- DMA:
- Store raw pointer of allocation as NonNull
- Use start_ptr() and start_ptr_mut() to inherit correct
mutability of self
- FS:
- Add file::Offset type alias
- I2C:
- Add abstractions for I2C device / driver infrastructure
- Implement abstractions for manual I2C device registrations
- I/O:
- Use "kernel vertical" style for imports
- Define ResourceSize as resource_size_t
- Move ResourceSize to top-level I/O module
- Add type alias for phys_addr_t
- Implement Rust version of read_poll_timeout_atomic()
- PCI:
- Use "kernel vertical" style for imports
- Move I/O and IRQ infrastructure to separate files
- Add support for PCI interrupt vectors
- Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert
an IrqVector bound to specific pci::Device into an IrqRequest
bound to the same pci::Device's parent Device
- Leverage pin_init_scope() to get rid of redundant Result in IRQ
methods
- PinInit:
- Add {pin_}init_scope() to execute code before creating an
initializer
- Platform:
- Leverage pin_init_scope() to get rid of redundant Result in IRQ
methods
- Timekeeping:
- Implement abstraction of udelay()
- Uaccess:
- Implement read_slice_partial() and read_slice_file() for
UserSliceReader
- Implement write_slice_partial() and write_slice_file() for
UserSliceWriter
sysfs:
- Prepare the constification of struct attribute"
* tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (75 commits)
rust: pci: fix build failure when CONFIG_PCI_MSI is disabled
debugfs: Fix default access mode config check
debugfs: Remove broken no-mount mode
debugfs: Remove redundant access mode checks
driver core: Check drivers_autoprobe for all added devices
driver core: WQ_PERCPU added to alloc_workqueue users
driver core: replace use of system_unbound_wq with system_dfl_wq
tick/nohz: Expose housekeeping CPUs in sysfs
tick/nohz: avoid showing '(null)' if nohz_full= not set
sysfs/cpu: Use DEVICE_ATTR_RO for nohz_full attribute
kernfs: fix memory leak of kernfs_iattrs in __kernfs_new_node
fs/kernfs: raise sb->maxbytes to MAX_LFS_FILESIZE
mod_devicetable: Bump auxiliary_device_id name size
sysfs: simplify attribute definition macros
samples/kobject: constify 'struct foo_attribute'
samples/kobject: add is_visible() callback to attribute group
sysfs: attribute_group: enable const variants of is_visible()
sysfs: introduce __SYSFS_FUNCTION_ALTERNATIVE()
sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS()
sysfs: attribute_group: allow registration of const attribute
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull more SoC driver updates from Arnd Bergmann:
"These updates came a little late, or were based on a later 6.18-rc tag
than the others:
- A new driver for cache management on cxl devices with memory shared
in a coherent cluster. This is part of the drivers/cache/ tree, but
unlike the other drivers that back the dma-mapping interfaces, this
one is needed only during CPU hotplug.
- A shared branch for reset controllers using swnode infrastructure
- Added support for new SoC variants in the Amlogic soc_device
identification
- Minor updates in Freescale, Microchip, Samsung, and Apple SoC
drivers"
* tag 'soc-drivers-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits)
soc: samsung: exynos-pmu: fix device leak on regmap lookup
soc: samsung: exynos-pmu: Fix structure initialization
soc: fsl: qbman: use kmalloc_array() instead of kmalloc()
soc: fsl: qbman: add WQ_PERCPU to alloc_workqueue users
MAINTAINERS: Update email address for Christophe Leroy
MAINTAINERS: refer to intended file in STANDALONE CACHE CONTROLLER DRIVERS
cache: Support cache maintenance for HiSilicon SoC Hydra Home Agent
cache: Make top level Kconfig menu a boolean dependent on RISCV
MAINTAINERS: Add Jonathan Cameron to drivers/cache and add lib/cache_maint.c + header
arm64: Select GENERIC_CPU_CACHE_MAINTENANCE
lib: Support ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION
soc: amlogic: meson-gx-socinfo: add new SoCs id
dt-bindings: arm: amlogic: meson-gx-ao-secure: support more SoCs
memregion: Support fine grained invalidate by cpu_cache_invalidate_memregion()
memregion: Drop unused IORES_DESC_* parameter from cpu_cache_invalidate_memregion()
dt-bindings: cache: sifive,ccache0: add a pic64gx compatible
MAINTAINERS: rename Microchip RISC-V entry
MAINTAINERS: add new soc drivers to Microchip RISC-V entry
soc: microchip: add mfd drivers for two syscon regions on PolarFire SoC
dt-bindings: soc: microchip: document the simple-mfd syscon on PolarFire SoC
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"This is the first half of the driver changes:
- A treewide interface change to the "syscore" operations for power
management, as a preparation for future Tegra specific changes
- Reset controller updates with added drivers for LAN969x, eic770 and
RZ/G3S SoCs
- Protection of system controller registers on Renesas and Google
SoCs, to prevent trivially triggering a system crash from e.g.
debugfs access
- soc_device identification updates on Nvidia, Exynos and Mediatek
- debugfs support in the ST STM32 firewall driver
- Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI
- Cleanups for memory controller support on Nvidia and Renesas"
* tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (114 commits)
memory: tegra186-emc: Fix missing put_bpmp
Documentation: reset: Remove reset_controller_add_lookup()
reset: fix BIT macro reference
reset: rzg2l-usbphy-ctrl: Fix a NULL vs IS_ERR() bug in probe
reset: th1520: Support reset controllers in more subsystems
reset: th1520: Prepare for supporting multiple controllers
dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys
dt-bindings: reset: thead,th1520-reset: Remove non-VO-subsystem resets
reset: remove legacy reset lookup code
clk: davinci: psc: drop unused reset lookup
reset: rzg2l-usbphy-ctrl: Add support for RZ/G3S SoC
reset: rzg2l-usbphy-ctrl: Add support for USB PWRRDY
dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3S support
reset: eswin: Add eic7700 reset driver
dt-bindings: reset: eswin: Documentation for eic7700 SoC
reset: sparx5: add LAN969x support
dt-bindings: reset: microchip: Add LAN969x support
soc: rockchip: grf: Add select correct PWM implementation on RK3368
soc/tegra: pmc: Add USB wake events for Tegra234
amba: tegra-ahb: Fix device leak on SMMU enable
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull new SoC families update from Arnd Bergmann:
"These three new families of SoC are split out into a separate branch
because they touch multiple parts of the source tree and are better
left separate for the initial merge.
- Black Sesame Technologies C1200 is an automotive SoC using
Cortex-A78 CPU cores
- Anlogic dr1v90 (not to be confused with Amlogic) is an FPGA
platform using a single nuclei ux900 RISC-V core
- Tenstorrent Blackhole is a Neural Processing Unit using custom
"Tensix" cores for computation offload managed by Linux running on
SiFive X280 RISC-V cores.
Support for all three is rather rudimentary at the moment and will get
improved as device drivers are merged through other tree"
* tag 'soc-newsoc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits)
MAINTAINERS: add Black Sesame Technologies (BST) ARM SoC support
arm64: defconfig: enable BST platform support
arm64: dts: bst: add support for Black Sesame Technologies C1200 CDCU1.0 board
arm64: Kconfig: add ARCH_BST for Black Sesame Technologies SoCs
dt-bindings: arm: add Black Sesame Technologies (bst) SoC
dt-bindings: vendor-prefixes: Add Black Sesame Technologies Co., Ltd.
MAINTAINERS: Setup support for Anlogic tree
riscv: defconfig: Enable Anlogic SoC
riscv: dts: anlogic: Add Milianke MLKPAI FS01 board
riscv: dts: Add initial Anlogic DR1V90 SoC device tree
riscv: Add Anlogic SoC famly Kconfig support
dt-bindings: serial: snps-dw-apb-uart: Add Anlogic DR1V90 uart
dt-bindings: timer: Add Anlogic DR1V90 ACLINT MTIMER
dt-bindings: riscv: Add Anlogic DR1V90
dt-bindings: riscv: Add Nuclei UX900 compatibles
dt-bindings: vendor-prefixes: Add Anlogic, Milianke and Nuclei
riscv: defconfig: Enable Tenstorrent SoCs
riscv: Kconfig.socs: Add ARCH_TENSTORRENT for Tenstorrent SoCs
riscv: dts: Add Tenstorrent Blackhole SoC PCIe cards
dt-bindings: interrupt-controller: Add Tenstorrent Blackhole compatible
...
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|
Pull SoC devicetree updates from Arnd Bergmann:
"Three new SoCs got added in existing arm64 chip families:
- Renesas R-Car X5H (R8A78000) is a new generation of automotive
SoCs, based on 16 Cortex-A720 (Armv9.2) cores, which makes the the
currently highest-perforance embedded SoC.
- TI AM62L is a new variant of the AM62 family of industrial SoCs,
this one comes without a GPU.
- Qualcomm MSM8937 (Snapdragon 430) is an older mobile phone chip
based on Cortex-A53, and closely related to MSM8917 (Snapdragn
425), which we already support.
In addition, there are a good number of newly supported machines
across SoC families:
- Two Aspeed AST2600 (Cortex-A7) based BMC setups for large servers
- Mobile Phones and tables based on Mediatek MT6582, Nvidia Tegra124,
Qualcomm MSM8937 and Qualcomm MSM8939,
- Two Laptops based on Qualcomm SoCs: one using the older sdm850, the
other using x1p42100.
- One Router based on Rockchips RK3568
- 24 variants of the Enclustra Mercury system-on-module, all based on
32-bit Intel/Altera SocFPGA chips, plus two boards using 64-bit
SocFPGA Agilex chips..
- 30 industrial/embedded boards and single-board computers, using
various chips from NXP, Rockchips, Mediatek, TI, Amlogic, Qualcomm,
Spacemit, and Starfive.
In total there are 783 commits here, the majority of these improving
hardware support and cleaning up devicetree files across the tree,
with the majority of the changes going into the Qualcomm, NXP, Renesas
and Rockchips platforms"
* tag 'soc-dt-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (782 commits)
arm64: dts: mediatek: mt8195: Fix address range for JPEG decoder core 1
ARM: dts: samsung: exynos4412-midas: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: exynos4210-trats: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: exynos4210-i9100: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: universal_c210: turn off SDIO WLAN chip during system suspend
arm64: dts: amlogic: meson-g12b: Fix L2 cache reference for S922X CPUs
arm64: dts: Add gpio_intc node for Amlogic S7D SoCs
arm64: dts: Add gpio_intc node for Amlogic S7 SoCs
arm64: dts: Add gpio_intc node for Amlogic S6 SoCs
arm64: dts: amlogic: s7d: add ao secure node
arm64: dts: amlogic: s7: add ao secure node
arm64: dts: amlogic: s6: add ao secure node
arm64: dts: amlogic: Fix the register name of the 'DBI' region
dts: arm64: amlogic: add a5 pinctrl node
arm64: dts: amlogic: s7d: add power domain controller node
arm64: dts: amlogic: s7: add power domain controller node
arm64: dts: amlogic: s6: add power domain controller node
dts: arm64: amlogic: Add ISP related nodes for C3
arm64: dts: meson: add initial device-tree for Tanix TX9 Pro
dt-bindings: arm: amlogic: add support for Tanix TX9 Pro
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC ARM code updates from Arnd Bergmann:
"These are very minimal changes for 32-bit Arm platform code, enabling
SMP bringup for one more SoC variant (mt6582) among spelling changes
and a build warning fix"
* tag 'soc-arm-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: omap1: avoid symbol clashes in fiq handler
ARM: gemini: fix typos in comments
ARM: versatile: Fix typo in versatile.c
ARM: OMAP2+: Fix falg->flag typo in omap_smc2()
ARM: mediatek: add MT6582 smp bring up code
ARM: mediatek: add board_dt_compat entry for the MT6582 SoC
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC defconfig updates from Arnd Bergmann:
"As usual, a number of newly added drivers get enabled in the arm64
defconfig, in addition to minor housekeeping work on defconfig files
for arm32, arm64 and riscv"
* tag 'soc-defconfig-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits)
arm64: defconfig: enable Exynos ACPM clocks
arm64: defconfig: Remove the redundant SCHED_MC/SCHED_SMT
ARM: multi_v7_defconfig: Enable TI PRU Ethernet driver
arm64: defconfig: enable i.MX AIPSTZ driver
ARM: mxs_defconfig: enable sound drivers for imx28-amarula-rmm
arm64: defconfig: Enable i.MX95 drivers for pinctrl, Ethernet and PCIe
arm64: defconfig: enable rockchip camera interface
ARM: tegra: Enable EXT4 for Tegra
arm64: defconfig: Enable NVIDIA VRS PSEQ RTC
arm64: defconfig: Enable SX150x GPIO expander driver
riscv: defconfig: enable SPI_FSL_QUADSPI as a module
ARM: at91: at91_dt_defconfig: set MMC_SPI to module
arm64: defconfig: Build NSS clock controller driver for IPQ5424
arm64: defconfig: Enable SCSI UFS Crypto and Block Inline encryption drivers
arm64: defconfig: Add M31 eUSB2 PHY config
arm64: defconfig: Enable configs for Fairphone 3, 4, 5 smartphones
arm64: defconfig: Enable two Novatek display panels for MTP8750 and Tianma
arm64: defconfig: Enable RZ/T2H / RZ/N2H ADC driver
ARM: shmobile: defconfig: Refresh for v6.18-rc1
arm64: defconfig: Enable DW HDMI QP CEC support
...
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|
Pull KVM updates from Paolo Bonzini:
"ARM:
- Support for userspace handling of synchronous external aborts
(SEAs), allowing the VMM to potentially handle the abort in a
non-fatal manner
- Large rework of the VGIC's list register handling with the goal of
supporting more active/pending IRQs than available list registers
in hardware. In addition, the VGIC now supports EOImode==1 style
deactivations for IRQs which may occur on a separate vCPU than the
one that acked the IRQ
- Support for FEAT_XNX (user / privileged execute permissions) and
FEAT_HAF (hardware update to the Access Flag) in the software page
table walkers and shadow MMU
- Allow page table destruction to reschedule, fixing long
need_resched latencies observed when destroying a large VM
- Minor fixes to KVM and selftests
Loongarch:
- Get VM PMU capability from HW GCFG register
- Add AVEC basic support
- Use 64-bit register definition for EIOINTC
- Add KVM timer test cases for tools/selftests
RISC/V:
- SBI message passing (MPXY) support for KVM guest
- Give a new, more specific error subcode for the case when in-kernel
AIA virtualization fails to allocate IMSIC VS-file
- Support KVM_DIRTY_LOG_INITIALLY_SET, enabling dirty log gradually
in small chunks
- Fix guest page fault within HLV* instructions
- Flush VS-stage TLB after VCPU migration for Andes cores
s390:
- Always allocate ESCA (Extended System Control Area), instead of
starting with the basic SCA and converting to ESCA with the
addition of the 65th vCPU. The price is increased number of exits
(and worse performance) on z10 and earlier processor; ESCA was
introduced by z114/z196 in 2010
- VIRT_XFER_TO_GUEST_WORK support
- Operation exception forwarding support
- Cleanups
x86:
- Skip the costly "zap all SPTEs" on an MMIO generation wrap if MMIO
SPTE caching is disabled, as there can't be any relevant SPTEs to
zap
- Relocate a misplaced export
- Fix an async #PF bug where KVM would clear the completion queue
when the guest transitioned in and out of paging mode, e.g. when
handling an SMI and then returning to paged mode via RSM
- Leave KVM's user-return notifier registered even when disabling
virtualization, as long as kvm.ko is loaded. On reboot/shutdown,
keeping the notifier registered is ok; the kernel does not use the
MSRs and the callback will run cleanly and restore host MSRs if the
CPU manages to return to userspace before the system goes down
- Use the checked version of {get,put}_user()
- Fix a long-lurking bug where KVM's lack of catch-up logic for
periodic APIC timers can result in a hard lockup in the host
- Revert the periodic kvmclock sync logic now that KVM doesn't use a
clocksource that's subject to NTP corrections
- Clean up KVM's handling of MMIO Stale Data and L1TF, and bury the
latter behind CONFIG_CPU_MITIGATIONS
- Context switch XCR0, XSS, and PKRU outside of the entry/exit fast
path; the only reason they were handled in the fast path was to
paper of a bug in the core #MC code, and that has long since been
fixed
- Add emulator support for AVX MOV instructions, to play nice with
emulated devices whose guest drivers like to access PCI BARs with
large multi-byte instructions
x86 (AMD):
- Fix a few missing "VMCB dirty" bugs
- Fix the worst of KVM's lack of EFER.LMSLE emulation
- Add AVIC support for addressing 4k vCPUs in x2AVIC mode
- Fix incorrect handling of selective CR0 writes when checking
intercepts during emulation of L2 instructions
- Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32]
on VMRUN and #VMEXIT
- Fix a bug where KVM corrupt the guest code stream when re-injecting
a soft interrupt if the guest patched the underlying code after the
VM-Exit, e.g. when Linux patches code with a temporary INT3
- Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits
to userspace, and extend KVM "support" to all policy bits that
don't require any actual support from KVM
x86 (Intel):
- Use the root role from kvm_mmu_page to construct EPTPs instead of
the current vCPU state, partly as worthwhile cleanup, but mostly to
pave the way for tracking per-root TLB flushes, and elide EPT
flushes on pCPU migration if the root is clean from a previous
flush
- Add a few missing nested consistency checks
- Rip out support for doing "early" consistency checks via hardware
as the functionality hasn't been used in years and is no longer
useful in general; replace it with an off-by-default module param
to WARN if hardware fails a check that KVM does not perform
- Fix a currently-benign bug where KVM would drop the guest's
SPEC_CTRL[63:32] on VM-Enter
- Misc cleanups
- Overhaul the TDX code to address systemic races where KVM (acting
on behalf of userspace) could inadvertantly trigger lock contention
in the TDX-Module; KVM was either working around these in weird,
ugly ways, or was simply oblivious to them (though even Yan's
devilish selftests could only break individual VMs, not the host
kernel)
- Fix a bug where KVM could corrupt a vCPU's cpu_list when freeing a
TDX vCPU, if creating said vCPU failed partway through
- Fix a few sparse warnings (bad annotation, 0 != NULL)
- Use struct_size() to simplify copying TDX capabilities to userspace
- Fix a bug where TDX would effectively corrupt user-return MSR
values if the TDX Module rejects VP.ENTER and thus doesn't clobber
host MSRs as expected
Selftests:
- Fix a math goof in mmu_stress_test when running on a single-CPU
system/VM
- Forcefully override ARCH from x86_64 to x86 to play nice with
specifying ARCH=x86_64 on the command line
- Extend a bunch of nested VMX to validate nested SVM as well
- Add support for LA57 in the core VM_MODE_xxx macro, and add a test
to verify KVM can save/restore nested VMX state when L1 is using
5-level paging, but L2 is not
- Clean up the guest paging code in anticipation of sharing the core
logic for nested EPT and nested NPT
guest_memfd:
- Add NUMA mempolicy support for guest_memfd, and clean up a variety
of rough edges in guest_memfd along the way
- Define a CLASS to automatically handle get+put when grabbing a
guest_memfd from a memslot to make it harder to leak references
- Enhance KVM selftests to make it easer to develop and debug
selftests like those added for guest_memfd NUMA support, e.g. where
test and/or KVM bugs often result in hard-to-debug SIGBUS errors
- Misc cleanups
Generic:
- Use the recently-added WQ_PERCPU when creating the per-CPU
workqueue for irqfd cleanup
- Fix a goof in the dirty ring documentation
- Fix choice of target for directed yield across different calls to
kvm_vcpu_on_spin(); the function was always starting from the first
vCPU instead of continuing the round-robin search"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (260 commits)
KVM: arm64: at: Update AF on software walk only if VM has FEAT_HAFDBS
KVM: arm64: at: Use correct HA bit in TCR_EL2 when regime is EL2
KVM: arm64: Document KVM_PGTABLE_PROT_{UX,PX}
KVM: arm64: Fix spelling mistake "Unexpeced" -> "Unexpected"
KVM: arm64: Add break to default case in kvm_pgtable_stage2_pte_prot()
KVM: arm64: Add endian casting to kvm_swap_s[12]_desc()
KVM: arm64: Fix compilation when CONFIG_ARM64_USE_LSE_ATOMICS=n
KVM: arm64: selftests: Add test for AT emulation
KVM: arm64: nv: Expose hardware access flag management to NV guests
KVM: arm64: nv: Implement HW access flag management in stage-2 SW PTW
KVM: arm64: Implement HW access flag management in stage-1 SW PTW
KVM: arm64: Propagate PTW errors up to AT emulation
KVM: arm64: Add helper for swapping guest descriptor
KVM: arm64: nv: Use pgtable definitions in stage-2 walk
KVM: arm64: Handle endianness in read helper for emulated PTW
KVM: arm64: nv: Stop passing vCPU through void ptr in S2 PTW
KVM: arm64: Call helper for reading descriptors directly
KVM: arm64: nv: Advertise support for FEAT_XNX
KVM: arm64: Teach ptdump about FEAT_XNX permissions
KVM: s390: Use generic VIRT_XFER_TO_GUEST_WORK functions
...
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git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Johannes Berg:
"Apart from the usual small churn, we have
- initial SMP support (only kernel)
- major vDSO cleanups (and fixes for 32-bit)"
* tag 'uml-for-linux-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (33 commits)
um: Disable KASAN_INLINE when STATIC_LINK is selected
um: Don't rename vmap to kernel_vmap
um: drivers: virtio: use string choices helper
um: Always set up AT_HWCAP and AT_PLATFORM
x86/um: Remove FIXADDR_USER_START and FIXADDR_USE_END
um: Remove __access_ok_vsyscall()
um: Remove redundant range check from __access_ok_vsyscall()
um: Remove fixaddr_user_init()
x86/um: Drop gate area handling
x86/um: Do not inherit vDSO from host
um: Split out default elf_aux_hwcap
x86/um: Move ELF_PLATFORM fallback to x86-specific code
um: Split out default elf_aux_platform
um: Avoid circular dependency on asm-offsets in pgtable.h
um: Enable SMP support on x86
asm-generic: percpu: Add assembly guard
um: vdso: Remove getcpu support on x86
um: Add initial SMP support
um: Define timers on a per-CPU basis
um: Determine sleep based on need_resched()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
- Enable parallel hotplug for RISC-V
- Optimize vector regset allocation for ptrace()
- Add a kernel selftest for the vector ptrace interface
- Enable the userspace RAID6 test to build and run using RISC-V vectors
- Add initial support for the Zalasr RISC-V ratified ISA extension
- For the Zicbop RISC-V ratified ISA extension to userspace, expose
hardware and kernel support to userspace and add a kselftest for
Zicbop
- Convert open-coded instances of 'asm goto's that are controlled by
runtime ALTERNATIVEs to use riscv_has_extension_{un,}likely(),
following arm64's alternative_has_cap_{un,}likely()
- Remove an unnecessary mask in the GFP flags used in some calls to
pagetable_alloc()
* tag 'riscv-for-linus-6.19-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
selftests/riscv: Add Zicbop prefetch test
riscv: hwprobe: Expose Zicbop extension and its block size
riscv: Introduce Zalasr instructions
riscv: hwprobe: Export Zalasr extension
dt-bindings: riscv: Add Zalasr ISA extension description
riscv: Add ISA extension parsing for Zalasr
selftests: riscv: Add test for the Vector ptrace interface
riscv: ptrace: Optimize the allocation of vector regset
raid6: test: Add support for RISC-V
raid6: riscv: Allow code to be compiled in userspace
raid6: riscv: Prevent compiler from breaking inline vector assembly code
riscv: cmpxchg: Use riscv_has_extension_likely
riscv: bitops: Use riscv_has_extension_likely
riscv: hweight: Use riscv_has_extension_likely
riscv: checksum: Use riscv_has_extension_likely
riscv: pgtable: Use riscv_has_extension_unlikely
riscv: Remove __GFP_HIGHMEM masking
RISC-V: Enable HOTPLUG_PARALLEL for secondary CPUs
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Restore clearing of MSR[RI] at interrupt/syscall exit on 32-bit
- Fix unpaired stwcx on interrupt exit on 32-bit
- Fix race condition leading to double list-add in
mac_hid_toggle_emumouse()
- Fix mprotect on book3s 32-bit
- Fix SLB multihit issue during SLB preload with 64-bit hash MMU
- Add support for crashkernel CMA reservation
- Add die_id and die_cpumask for Power10 & later to expose chip
hemispheres
- A series of minor fixes and improvements to the hash SLB code
Thanks to Antonio Alvarez Feijoo, Ben Collins, Bhaskar Chowdhury,
Christophe Leroy, Daniel Thompson, Dave Vasilevsky, Donet Tom,
J. Neuschäfer, Kunwu Chan, Long Li, Naresh Kamboju, Nathan Chancellor,
Ritesh Harjani (IBM), Shirisha G, Shrikanth Hegde, Sourabh Jain, Srikar
Dronamraju, Stephen Rothwell, Thomas Zimmermann, Venkat Rao Bagalkote,
and Vishal Chourasia.
* tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (32 commits)
macintosh/via-pmu-backlight: Include <linux/fb.h> and <linux/of.h>
powerpc/powermac: backlight: Include <linux/of.h>
powerpc/64s/slb: Add no_slb_preload early cmdline param
powerpc/64s/slb: Make preload_add return type as void
powerpc/ptdump: Dump PXX level info for kernel_page_tables
powerpc/64s/pgtable: Enable directMap counters in meminfo for Hash
powerpc/64s/hash: Update directMap page counters for Hash
powerpc/64s/hash: Hash hpt_order should be only available with Hash MMU
powerpc/64s/hash: Improve hash mmu printk messages
powerpc/64s/hash: Fix phys_addr_t printf format in htab_initialize()
powerpc/64s/ptdump: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format
powerpc/64s/hash: Restrict stress_hpt_struct memblock region to within RMA limit
powerpc/64s/slb: Fix SLB multihit issue during SLB preload
powerpc, mm: Fix mprotect on book3s 32-bit
powerpc/smp: Expose die_id and die_cpumask
powerpc/83xx: Add a null pointer check to mcu_gpiochip_add
arch:powerpc:tools This file was missing shebang line, so added it
kexec: Include kernel-end even without crashkernel
powerpc: p2020: Rename wdt@ nodes to watchdog@
powerpc: 86xx: Rename wdt@ nodes to watchdog@
...
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Root partitions running on MSHV currently attempt ACPI power-off, which
MSHV intercepts and triggers a Machine Check Exception (MCE), leading
to a kernel panic.
Root partitions panic with a trace similar to:
[ 81.306348] reboot: Power down
[ 81.314709] mce: [Hardware Error]: CPU 0: Machine Check Exception: 4 Bank 0: b2000000c0060001
[ 81.314711] mce: [Hardware Error]: TSC 3b8cb60a66 PPIN 11d98332458e4ea9
[ 81.314713] mce: [Hardware Error]: PROCESSOR 0:606a6 TIME 1759339405 SOCKET 0 APIC 0 microcode ffffffff
[ 81.314715] mce: [Hardware Error]: Run the above through 'mcelog --ascii'
[ 81.314716] mce: [Hardware Error]: Machine check: Processor context corrupt
[ 81.314717] Kernel panic - not syncing: Fatal machine check
To avoid this, configure the sleep state in the hypervisor and invoke
the HVCALL_ENTER_SLEEP_STATE hypercall as the final step in the shutdown
sequence. This ensures a clean and safe shutdown of the root partition.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Co-developed-by: Anatol Belski <anbelski@linux.microsoft.com>
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@linux.microsoft.com>
Acked-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Configure sleep state information from ACPI in MSHV hypervisor using
a reboot notifier. This data allows the hypervisor to correctly power
off the host during shutdown.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Co-developed-by: Anatol Belski <anbelski@linux.microsoft.com>
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@linux.microsoft.com>
Reviewed-by: Stansialv Kinsburskii <skinsburskii@linux.miscrosoft.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Provide an interface for Virtual Machine Monitor like OpenVMM and its
use as OpenHCL paravisor to control VTL0 (Virtual trust Level).
Expose devices and support IOCTLs for features like VTL creation,
VTL0 memory management, context switch, making hypercalls,
mapping VTL0 address space to VTL2 userspace, getting new VMBus
messages and channel events in VTL2 etc.
Co-developed-by: Roman Kisel <romank@linux.microsoft.com>
Signed-off-by: Roman Kisel <romank@linux.microsoft.com>
Co-developed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull persistent dentry infrastructure and conversion from Al Viro:
"Some filesystems use a kinda-sorta controlled dentry refcount leak to
pin dentries of created objects in dcache (and undo it when removing
those). A reference is grabbed and not released, but it's not actually
_stored_ anywhere.
That works, but it's hard to follow and verify; among other things, we
have no way to tell _which_ of the increments is intended to be an
unpaired one. Worse, on removal we need to decide whether the
reference had already been dropped, which can be non-trivial if that
removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag
(DCACHE_PERSISTENT) marking those "leaked" dentries. Having it set
claims responsibility for +1 in refcount.
The end result this series is aiming for:
- get these unbalanced dget() and dput() replaced with new primitives
that would, in addition to adjusting refcount, set and clear
persistency flag.
- instead of having kill_litter_super() mess with removing the
remaining "leaked" references (e.g. for all tmpfs files that hadn't
been removed prior to umount), have the regular
shrink_dcache_for_umount() strip DCACHE_PERSISTENT of all dentries,
dropping the corresponding reference if it had been set. After that
kill_litter_super() becomes an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many
places in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary
pieces have already gone into mainline. This chunk is finally getting
to the meat of that stuff - infrastructure and most of the conversions
to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here"
* tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits)
d_make_discardable(): warn if given a non-persistent dentry
kill securityfs_recursive_remove()
convert securityfs
get rid of kill_litter_super()
convert rust_binderfs
convert nfsctl
convert rpc_pipefs
convert hypfs
hypfs: swich hypfs_create_u64() to returning int
hypfs: switch hypfs_create_str() to returning int
hypfs: don't pin dentries twice
convert gadgetfs
gadgetfs: switch to simple_remove_by_name()
convert functionfs
functionfs: switch to simple_remove_by_name()
functionfs: fix the open/removal races
functionfs: need to cancel ->reset_work in ->kill_sb()
functionfs: don't bother with ffs->ref in ffs_data_{opened,closed}()
functionfs: don't abuse ffs_data_closed() on fs shutdown
convert selinuxfs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"__vmalloc()/kvmalloc() and no-block support" (Uladzislau Rezki)
Rework the vmalloc() code to support non-blocking allocations
(GFP_ATOIC, GFP_NOWAIT)
"ksm: fix exec/fork inheritance" (xu xin)
Fix a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not
inherited across fork/exec
"mm/zswap: misc cleanup of code and documentations" (SeongJae Park)
Some light maintenance work on the zswap code
"mm/page_owner: add debugfs files 'show_handles' and 'show_stacks_handles'" (Mauricio Faria de Oliveira)
Enhance the /sys/kernel/debug/page_owner debug feature by adding
unique identifiers to differentiate the various stack traces so
that userspace monitoring tools can better match stack traces over
time
"mm/page_alloc: pcp->batch cleanups" (Joshua Hahn)
Minor alterations to the page allocator's per-cpu-pages feature
"Improve UFFDIO_MOVE scalability by removing anon_vma lock" (Lokesh Gidra)
Address a scalability issue in userfaultfd's UFFDIO_MOVE operation
"kasan: cleanups for kasan_enabled() checks" (Sabyrzhan Tasbolatov)
"drivers/base/node: fold node register and unregister functions" (Donet Tom)
Clean up the NUMA node handling code a little
"mm: some optimizations for prot numa" (Kefeng Wang)
Cleanups and small optimizations to the NUMA allocation hinting
code
"mm/page_alloc: Batch callers of free_pcppages_bulk" (Joshua Hahn)
Address long lock hold times at boot on large machines. These were
causing (harmless) softlockup warnings
"optimize the logic for handling dirty file folios during reclaim" (Baolin Wang)
Remove some now-unnecessary work from page reclaim
"mm/damon: allow DAMOS auto-tuned for per-memcg per-node memory usage" (SeongJae Park)
Enhance the DAMOS auto-tuning feature
"mm/damon: fixes for address alignment issues in DAMON_LRU_SORT and DAMON_RECLAIM" (Quanmin Yan)
Fix DAMON_LRU_SORT and DAMON_RECLAIM with certain userspace
configuration
"expand mmap_prepare functionality, port more users" (Lorenzo Stoakes)
Enhance the new(ish) file_operations.mmap_prepare() method and port
additional callsites from the old ->mmap() over to ->mmap_prepare()
"Fix stale IOTLB entries for kernel address space" (Lu Baolu)
Fix a bug (and possible security issue on non-x86) in the IOMMU
code. In some situations the IOMMU could be left hanging onto a
stale kernel pagetable entry
"mm/huge_memory: cleanup __split_unmapped_folio()" (Wei Yang)
Clean up and optimize the folio splitting code
"mm, swap: misc cleanup and bugfix" (Kairui Song)
Some cleanups and a minor fix in the swap discard code
"mm/damon: misc documentation fixups" (SeongJae Park)
"mm/damon: support pin-point targets removal" (SeongJae Park)
Permit userspace to remove a specific monitoring target in the
middle of the current targets list
"mm: MISC follow-up patches for linux/pgalloc.h" (Harry Yoo)
A couple of cleanups related to mm header file inclusion
"mm/swapfile.c: select swap devices of default priority round robin" (Baoquan He)
improve the selection of swap devices for NUMA machines
"mm: Convert memory block states (MEM_*) macros to enums" (Israel Batista)
Change the memory block labels from macros to enums so they will
appear in kernel debug info
"ksm: perform a range-walk to jump over holes in break_ksm" (Pedro Demarchi Gomes)
Address an inefficiency when KSM unmerges an address range
"mm/damon/tests: fix memory bugs in kunit tests" (SeongJae Park)
Fix leaks and unhandled malloc() failures in DAMON userspace unit
tests
"some cleanups for pageout()" (Baolin Wang)
Clean up a couple of minor things in the page scanner's
writeback-for-eviction code
"mm/hugetlb: refactor sysfs/sysctl interfaces" (Hui Zhu)
Move hugetlb's sysfs/sysctl handling code into a new file
"introduce VM_MAYBE_GUARD and make it sticky" (Lorenzo Stoakes)
Make the VMA guard regions available in /proc/pid/smaps and
improves the mergeability of guarded VMAs
"mm: perform guard region install/remove under VMA lock" (Lorenzo Stoakes)
Reduce mmap lock contention for callers performing VMA guard region
operations
"vma_start_write_killable" (Matthew Wilcox)
Start work on permitting applications to be killed when they are
waiting on a read_lock on the VMA lock
"mm/damon/tests: add more tests for online parameters commit" (SeongJae Park)
Add additional userspace testing of DAMON's "commit" feature
"mm/damon: misc cleanups" (SeongJae Park)
"make VM_SOFTDIRTY a sticky VMA flag" (Lorenzo Stoakes)
Address the possible loss of a VMA's VM_SOFTDIRTY flag when that
VMA is merged with another
"mm: support device-private THP" (Balbir Singh)
Introduce support for Transparent Huge Page (THP) migration in zone
device-private memory
"Optimize folio split in memory failure" (Zi Yan)
"mm/huge_memory: Define split_type and consolidate split support checks" (Wei Yang)
Some more cleanups in the folio splitting code
"mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries" (Lorenzo Stoakes)
Clean up our handling of pagetable leaf entries by introducing the
concept of 'software leaf entries', of type softleaf_t
"reparent the THP split queue" (Muchun Song)
Reparent the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory
resources
"unify PMD scan results and remove redundant cleanup" (Wei Yang)
A little cleanup in the hugepage collapse code
"zram: introduce writeback bio batching" (Sergey Senozhatsky)
Improve zram writeback efficiency by introducing batched bio
writeback support
"memcg: cleanup the memcg stats interfaces" (Shakeel Butt)
Clean up our handling of the interrupt safety of some memcg stats
"make vmalloc gfp flags usage more apparent" (Vishal Moola)
Clean up vmalloc's handling of incoming GFP flags
"mm: Add soft-dirty and uffd-wp support for RISC-V" (Chunyan Zhang)
Teach soft dirty and userfaultfd write protect tracking to use
RISC-V's Svrsw60t59b extension
"mm: swap: small fixes and comment cleanups" (Youngjun Park)
Fix a small bug and clean up some of the swap code
"initial work on making VMA flags a bitmap" (Lorenzo Stoakes)
Start work on converting the vma struct's flags to a bitmap, so we
stop running out of them, especially on 32-bit
"mm/swapfile: fix and cleanup swap list iterations" (Youngjun Park)
Address a possible bug in the swap discard code and clean things
up a little
[ This merge also reverts commit ebb9aeb980e5 ("vfio/nvgrace-gpu:
register device memory for poison handling") because it looks
broken to me, I've asked for clarification - Linus ]
* tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits)
mm: fix vma_start_write_killable() signal handling
mm/swapfile: use plist_for_each_entry in __folio_throttle_swaprate
mm/swapfile: fix list iteration when next node is removed during discard
fs/proc/task_mmu.c: fix make_uffd_wp_huge_pte() huge pte handling
mm/kfence: add reboot notifier to disable KFENCE on shutdown
memcg: remove inc/dec_lruvec_kmem_state helpers
selftests/mm/uffd: initialize char variable to Null
mm: fix DEBUG_RODATA_TEST indentation in Kconfig
mm: introduce VMA flags bitmap type
tools/testing/vma: eliminate dependency on vma->__vm_flags
mm: simplify and rename mm flags function for clarity
mm: declare VMA flags by bit
zram: fix a spelling mistake
mm/page_alloc: optimize lowmem_reserve max lookup using its semantic monotonicity
mm/vmscan: skip increasing kswapd_failures when reclaim was boosted
pagemap: update BUDDY flag documentation
mm: swap: remove scan_swap_map_slots() references from comments
mm: swap: change swap_alloc_slow() to void
mm, swap: remove redundant comment for read_swap_cache_async
mm, swap: use SWP_SOLIDSTATE to determine if swap is rotational
...
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/dt
Samsung DTS ARM changes for v6.19
Fix WiFi on Exynos4210 and Exynos4412 boards with Broadcom chip after
system suspend and resume, by using cap-power-off-card to power off the
WiFi during suspend.
* tag 'samsung-dt-6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: dts: samsung: exynos4412-midas: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: exynos4210-trats: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: exynos4210-i9100: turn off SDIO WLAN chip during system suspend
ARM: dts: samsung: universal_c210: turn off SDIO WLAN chip during system suspend
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The ams-delta-fiq-handler.S file has a number of symbols with fairly
generic names, including one named 'exit' that causes a compiler warning
in some configuration options:
vmlinux.o: error: exit() function name creates ambiguity with -ffunction-sections
Change all these symbols to use a .L prefix to make them local to
the fiq handler.
Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Link: https://lore.kernel.org/r/20251204095355.1032786-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
- Introduction of the generic IO page-table framework with support for
Intel and AMD IOMMU formats from Jason.
This has good potential for unifying more IO page-table
implementations and making future enhancements more easy. But this
also needed quite some fixes during development. All known issues
have been fixed, but my feeling is that there is a higher potential
than usual that more might be needed.
- Intel VT-d updates:
- Use right invalidation hint in qi_desc_iotlb()
- Reduce the scope of INTEL_IOMMU_FLOPPY_WA
- ARM-SMMU updates:
- Qualcomm device-tree binding updates for Kaanapali and Glymur SoCs
and a new clock for the TBU.
- Fix error handling if level 1 CD table allocation fails.
- Permit more than the architectural maximum number of SMRs for
funky Qualcomm mis-implementations of SMMUv2.
- Mediatek driver:
- MT8189 iommu support
- Move ARM IO-pgtable selftests to kunit
- Device leak fixes for a couple of drivers
- Random smaller fixes and improvements
* tag 'iommu-updates-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (81 commits)
iommupt/vtd: Support mgaw's less than a 4 level walk for first stage
iommupt/vtd: Allow VT-d to have a larger table top than the vasz requires
powerpc/pseries/svm: Make mem_encrypt.h self contained
genpt: Make GENERIC_PT invisible
iommupt: Avoid a compiler bug with sw_bit
iommu/arm-smmu-qcom: Enable use of all SMR groups when running bare-metal
iommupt: Fix unlikely flows in increase_top()
iommu/amd: Propagate the error code returned by __modify_irte_ga() in modify_irte_ga()
MAINTAINERS: Update my email address
iommu/arm-smmu-v3: Fix error check in arm_smmu_alloc_cd_tables
dt-bindings: iommu: qcom_iommu: Allow 'tbu' clock
iommu/vt-d: Restore previous domain::aperture_end calculation
iommu/vt-d: Fix unused invalidation hint in qi_desc_iotlb
iommu/vt-d: Set INTEL_IOMMU_FLOPPY_WA depend on BLK_DEV_FD
iommu/tegra: fix device leak on probe_device()
iommu/sun50i: fix device leak on of_xlate()
iommu/omap: simplify probe_device() error handling
iommu/omap: fix device leaks on probe_device()
iommu/mediatek-v1: add missing larb count sanity check
iommu/mediatek-v1: fix device leaks on probe()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"There's one new driver, lots of various updates to existing ones, some
refactoring support for new models and misc tweaks and fixes.
The biggest new feature in GPIO core is adding support for managed,
enable-counted sharing of GPIO pins, something that - until now - was
only hacked around with the GPIOD_FLAGS_BIT_NONEXCLUSIVE request flag
which basically allowed drivers to "fight it out" for the descriptor
and provided no synchronization. It was enabled on Qualcomm platforms
(and thus is enabled on arm64 defconfig) and I plan on removing
GPIOD_FLAGS_BIT_NONEXCLUSIVE once all drivers using it are switched to
the new mechanism.
GPIO core:
- add proper support for shared GPIOs that's aiming to replace the
current sharing mechanism (which provides no synchronization ot
enable counting) and enable it for Qualcomm platforms
- improve the software node GPIO lookup by using the fwnode
representation instead of the software node's name which was prone
to bugs (GPIO controllers don't have to use the software node's
name as their kernel label)
- remove the last user of legacy-of-mm-gpiochip.h and drop the header
- move closer to removing the legacy gpio_request_one() routine
- rename some symbols for consistency
- shrink GPIO printk() helpers by reusing existing code
- remove some redundant kernel messages
- use min() instead of min_t() in GPIO ACPI code
- use system_percpu_wq instead of system_wq in GPIO character device
code
New drivers:
- add a driver for the QIXIS FPGA GPIO controller
Driver improvements:
- use modernized variants of power management macros across a wide
array of drivers in order to avoid having to use the __maybe_unused
attribute
- convert gpio-elkhartlake and reset-gpio to using the auxiliary bus
instead of the platform bus as they are not really described in
firmware
- use lock guards and update symbol prefixes in gpio-mmio
- support the bryx radio interface kit in gpio-mpsse + refactor the
driver
- use software nodes for configuring the reset-gpio driver, including
setting up the reference to the shared "reset" pin
- check and propagate the return value of gpiod_set_value() to
user-space in gpio-virtuser (this was previously not possible as
this function returned void)
- extend the gpio-regmap helper with more features (bypass cache for
aliased inputs, force writes for aliased data registers, add a new
configuration parameter)
- remove unneeded includes from gpio-aspeed and gpio-latch
- add support for Tegra410 to gpio-tegra186
- replace PCI-specific PM with generic device-level PM in gpio-bt8xx
- use dynamic GPIO range allocation in gpio-loongson-64bit
- improve handling of level-triggered interrupts in gpio-pca953x
- add suspend/resume support to gpio-fxl6408
- add support for more models to gpio-menz127
- optimize gpio-mvebu interrupt handling by avoiding unnecessary
calls to mvebu_gpio_irq_handler()
- make locking more consistent in gpio-grgpio
Device-tree bindings:
- document new NXP and Microchip models
Documentation:
- add a comprehensive compatibility and feature list for
gpio-pca953x, which is a great addition as it's probably the most
commonly used GPIO expander driver
- kernel-doc tweaks
Late fixes:
- use BYTE_CTRL_MODE for 2K2000/3000 models in gpio-loongson"
* tag 'gpio-updates-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (80 commits)
gpio: loongson: Switch 2K2000/3000 GPIO to BYTE_CTRL_MODE
gpio: regmap: fix kernel-doc notation
gpio: shared: fix a deadlock
gpio: shared-proxy: set suppress_bind_attrs
gpio: shared: ignore GPIO hogs when traversing the device tree
gpio: shared: ignore special __symbols__ node when traversing device tree
gpio: shared: handle the reset-gpios corner case
gpio: zynq: Use modern PM macros
gpio: xilinx: Use modern PM macros
gpio: xgene: Use modern PM macros
gpio: uniphier: Use modern PM macros
gpio: tqmx86: Use modern PM macros
gpio: pch: Use modern PM macros
gpio: omap: Use modern PM macros
gpio: msc313: Use modern PM macros
gpio: mlxbf2: Use modern PM macros
gpio: ml-ioh: Use modern PM macros
gpio: pl061: Use modern PM macros
gpio: htc-egpio: Use modern PM macros
gpio: brcmstb: Use modern PM macros
...
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Pull drm updates from Dave Airlie:
"There was a rather late merge of a new color pipeline feature, that
some userspace projects are blocked on, and has seen a lot of work in
amdgpu. This should have seen some time in -next. There is additional
support for this for Intel, that if it arrives in the next day or two
I'll pass it on in another pull request and you can decide if you want
to take it.
Highlights:
- Arm Ethos NPU accelerator driver
- new DRM color pipeline support
- amdgpu will now run discrete SI/CIK cards instead of radeon, which
enables vulkan support in userspace
- msm gets gen8 gpu support
- initial Xe3P support in xe
Full detail summary:
New driver:
- Arm Ethos-U65/U85 accel driver
Core:
- support the drm color pipeline in vkms/amdgfx
- add support for drm colorop pipeline
- add COLOR PIPELINE plane property
- add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
- throttle dirty worker with vblank
- use drm_for_each_bridge_in_chain_scoped in drm's bridge code
- Ensure drm_client_modeset tests are enabled in UML
- add simulated vblank interrupt - use in drivers
- dumb buffer sizing helper
- move freeing of drm client memory to driver
- crtc sharpness strength property
- stop using system_wq in scheduler/drivers
- support emergency restore in drm-client
Rust:
- make slice::as_flattened usable on all supported rustc
- add FromBytes::from_bytes_prefix() method
- remove redundant device ptr from Rust GEM object
- Change how AlwaysRefCounted is implemented for GEM objects
gpuvm:
- Add deferred vm_bo cleanup to GPUVM (for rust)
atomic:
- cleanup and improve state handling interfaces
buddy:
- optimize block management
dma-buf:
- heaps: Create heap per CMA reserved location
- improve userspace documentation
dp:
- add POST_LT_ADJ_REQ training sequence
- DPCD dSC quirk for synaptics panamera devices
- helpers to query branch DSC max throughput
ttm:
- Rename ttm_bo_put to ttm_bo_fini
- allow page protection flags on risc-v
- rework pipelined eviction fence handling
amdgpu:
- enable amdgpu by default for SI/CI dGPUs
- enable DC by default on SI
- refactor CIK/SI enablement
- add ABM KMS property
- Re-enable DM idle optimizations
- DC Analog encoders support
- Powerplay fixes for fiji/iceland
- Enable DC on bonaire by default
- HMM cleanup
- Add new RAS framework
- DML2.1 updates
- YCbCr420 fixes
- DC FP fixes
- DMUB fixes
- LTTPR fixes
- DTBCLK fixes
- DMU cursor offload handling
- Userq validation improvements
- Unify shutdown callback handling
- Suspend improvements
- Power limit code cleanup
- SR-IOV fixes
- AUX backlight fixes
- DCN 3.5 fixes
- HDMI compliance fixes
- DCN 4.0.1 cursor updates
- DCN interrupt fix
- DC KMS full update improvements
- Add additional HDCP traces
- DCN 3.2 fixes
- DP MST fixes
- Add support for new SR-IOV mailbox interface
- UQ reset support
- HDP flush rework
- VCE1 support
amdkfd:
- HMM cleanups
- Relax checks on save area overallocations
- Fix GPU mappings after prefetch
radeon:
- refactor CIK/SI enablement
xe:
- Initial Xe3P support
- panic support on VRAM for display
- fix stolen size check
- Loosen used tracking restriction
- New SR-IOV debugfs structure and debugfs updates
- Hide the GPU madvise flag behind a VM_BIND flag
- Always expose VRAM provisioning data on discrete GPUs
- Allow VRAM mappings for userptr when used with SVM
- Allow pinning of p2p dma-buf
- Use per-tile debugfs where appropriate
- Add documentation for Execution Queues
- PF improvements
- VF migration recovery redesign work
- User / Kernel VRAM partitioning
- Update Tile-based messages
- Allow configfs to disable specific GT types
- VF provisioning and migration improvements
- use SVM range helpers in PT layer
- Initial CRI support
- access VF registers using dedicated MMIO view
- limit number of jobs per exec queue
- add sriov_admin sysfs tree
- more crescent island specific support
- debugfs residency counter
- SRIOV migration work
- runtime registers for GFX 35
i915:
- add initial Xe3p_LPD display version 35 support
- Enable LNL+ content adaptive sharpness filter
- Use optimized VRR guardband
- Enable Xe3p LT PHY
- enable FBC support for Xe3p_LPD display
- add display 30.02 firmware support
- refactor SKL+ watermark latency setup
- refactor fbdev handling
- call i915/xe runtime PM via function pointers
- refactor i915/xe stolen memory/display interfaces
- use display version instead of gfx version in display code
- extend i915_display_info with Type-C port details
- lots of display cleanups/refactorings
- set O_LARGEFILE in __create_shmem
- skuip guc communication warning on reset
- fix time conversions
- defeature DRRS on LNL+
- refactor intel_frontbuffer split between i915/xe/display
- convert inteL_rom interfaces to struct drm_device
- unify display register polling interfaces
- aovid lock inversion when pinning to GGTT on CHV/BXT+VTD
panel:
- Add KD116N3730A08/A12, chromebook mt8189
- JT101TM023, LQ079L1SX01,
- GLD070WX3-SL01 MIPI DSI
- Samsung LTL106AL0, Samsung LTL106AL01
- Raystar RFF500F-AWH-DNN
- Winstar WF70A8SYJHLNGA
- Wanchanglong w552946aaa
- Samsung SOFEF00
- Lenovo X13s panel
- ilitek-ili9881c - add rpi 5" support
- visionx-rm69299 - add backlight support
- edp - support AUI B116XAN02.0
bridge:
- improve ref counting
- ti-sn65dsi86 - add support for DP mode with HPD
- synopsis: support CEC, init timer with correct freq
- ASL CS5263 DP-to-HDMI bridge support
nova-core:
- introduce bitfield! macro
- introduce safe integer converters
- GSP inits to fully booted state on Ampere
- Use more future-proof register for GPU identification
nova-drm:
- select NOVA_CORE
- 64-bit only
nouveau:
- improve reclocking on tegra 186+
- add large page and compression support
msm:
- GPU:
- Gen8 support: A840 (Kaanapali) and X2-85 (Glymur)
- A612 support
- MDSS:
- Added support for Glymur and QCS8300 platforms
- DPU:
- Enabled Quad-Pipe support, unlocking higher resolutions support
- Added support for Glymur platform
- Documented DPU on QCS8300 platform as supported
- DisplayPort:
- Added support for Glymur platform
- Added support lame remapping inside DP block
- Documented DisplayPort controller on QCS8300 and SM6150/QCS615
as supported
tegra:
- NVJPG driver
panfrost:
- display JM contexts over debugfs
- export JM contexts to userspace
- improve error and job handling
panthor:
- support custom ASN_HASH for mt8196
- support mali-G1 GPU
- flush shmem write before mapping buffers uncached
- make timeout per-queue instead of per-job
mediatek:
- MT8195/88 HDMIv2/DDCv2 support
rockchip:
- dsi: add support for RK3368
amdxdna:
- enhance runtime PM
- last hardware error reading uapi
- support firmware debug output
- add resource and telemetry data uapi
- preemption support
imx:
- add driver for HDMI TX Parallel audio interface
ivpu:
- add support for user-managed preemption buffer
- add userptr support
- update JSM firware API to 3.33.0
- add better alloc/free warnings
- fix page fault in unbind all bos
- rework bind/unbind of imported buffers
- enable MCA ECC signalling
- split fw runtime and global memory buffers
- add fdinfo memory statistics
tidss:
- convert to drm logging
- logging cleanup
ast:
- refactor generation init paths
- add per chip generation detect_tx_chip
- set quirks for each chip model
atmel-hlcdc:
- set LCDC_ATTRE register in plane disable
- set correct values for plane scaler
solomon:
- use drm helper for get_modes and move_valid
sitronix:
- fix output position when clearing screens
qaic:
- support dma-buf exports
- support new firmware's READ_DATA implementation
- sahara AIC200 image table update
- add sysfs support
- add coredump support
- add uevents support
- PM support
sun4i:
- layer refactors to decouple plane from output
- improve DE33 support
vc4:
- switch to generic CEC helpers
komeda:
- use drm_ logging functions
vkms:
- configfs support for display configuration
vgem:
- fix fence timer deadlock
etnaviv:
- add HWDB entry for GC8000 Nano Ultra VIP r6205"
* tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel: (1869 commits)
Revert "drm/amd: Skip power ungate during suspend for VPE"
drm/amdgpu: use common defines for HUB faults
drm/amdgpu/gmc12: add amdgpu_vm_handle_fault() handling
drm/amdgpu/gmc11: add amdgpu_vm_handle_fault() handling
drm/amdgpu: use static ids for ACP platform devs
drm/amdgpu/sdma6: Update SDMA 6.0.3 FW version to include UMQ protected-fence fix
drm/amdgpu: Forward VMID reservation errors
drm/amdgpu/gmc8: Delegate VM faults to soft IRQ handler ring
drm/amdgpu/gmc7: Delegate VM faults to soft IRQ handler ring
drm/amdgpu/gmc6: Delegate VM faults to soft IRQ handler ring
drm/amdgpu/gmc6: Cache VM fault info
drm/amdgpu/gmc6: Don't print MC client as it's unknown
drm/amdgpu/cz_ih: Enable soft IRQ handler ring
drm/amdgpu/tonga_ih: Enable soft IRQ handler ring
drm/amdgpu/iceland_ih: Enable soft IRQ handler ring
drm/amdgpu/cik_ih: Enable soft IRQ handler ring
drm/amdgpu/si_ih: Enable soft IRQ handler ring
drm/amd/display: fix typo in display_mode_core_structs.h
drm/amd/display: fix Smart Power OLED not working after S4
drm/amd/display: Move RGB-type check for audio sync to DCE HW sequence
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Replace busylock at the Tx queuing layer with a lockless list.
Resulting in a 300% (4x) improvement on heavy TX workloads, sending
twice the number of packets per second, for half the cpu cycles.
- Allow constantly busy flows to migrate to a more suitable CPU/NIC
queue.
Normally we perform queue re-selection when flow comes out of idle,
but under extreme circumstances the flows may be constantly busy.
Add sysctl to allow periodic rehashing even if it'd risk packet
reordering.
- Optimize the NAPI skb cache, make it larger, use it in more paths.
- Attempt returning Tx skbs to the originating CPU (like we already
did for Rx skbs).
- Various data structure layout and prefetch optimizations from Eric.
- Remove ktime_get() from the recvmsg() fast path, ktime_get() is
sadly quite expensive on recent AMD machines.
- Extend threaded NAPI polling to allow the kthread busy poll for
packets.
- Make MPTCP use Rx backlog processing. This lowers the lock
pressure, improving the Rx performance.
- Support memcg accounting of MPTCP socket memory.
- Allow admin to opt sockets out of global protocol memory accounting
(using a sysctl or BPF-based policy). The global limits are a poor
fit for modern container workloads, where limits are imposed using
cgroups.
- Improve heuristics for when to kick off AF_UNIX garbage collection.
- Allow users to control TCP SACK compression, and default to 33% of
RTT.
- Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid
unnecessarily aggressive rcvbuf growth and overshot when the
connection RTT is low.
- Preserve skb metadata space across skb_push / skb_pull operations.
- Support for IPIP encapsulation in the nftables flowtable offload.
- Support appending IP interface information to ICMP messages (RFC
5837).
- Support setting max record size in TLS (RFC 8449).
- Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL.
- Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock.
- Let users configure the number of write buffers in SMC.
- Add new struct sockaddr_unsized for sockaddr of unknown length,
from Kees.
- Some conversions away from the crypto_ahash API, from Eric Biggers.
- Some preparations for slimming down struct page.
- YAML Netlink protocol spec for WireGuard.
- Add a tool on top of YAML Netlink specs/lib for reporting commonly
computed derived statistics and summarized system state.
Driver API:
- Add CAN XL support to the CAN Netlink interface.
- Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics, as
defined by the OPEN Alliance's "Advanced diagnostic features for
100BASE-T1 automotive Ethernet PHYs" specification.
- Add DPLL phase-adjust-gran pin attribute (and implement it in
zl3073x).
- Refactor xfrm_input lock to reduce contention when NIC offloads
IPsec and performs RSS.
- Add info to devlink params whether the current setting is the
default or a user override. Allow resetting back to default.
- Add standard device stats for PSP crypto offload.
- Leverage DSA frame broadcast to implement simple HSR frame
duplication for a lot of switches without dedicated HSR offload.
- Add uAPI defines for 1.6Tbps link modes.
Device drivers:
- Add Motorcomm YT921x gigabit Ethernet switch support.
- Add MUCSE driver for N500/N210 1GbE NIC series.
- Convert drivers to support dedicated ops for timestamping control,
and away from the direct IOCTL handling. While at it support GET
operations for PHY timestamping.
- Add (and convert most drivers to) a dedicated ethtool callback for
reading the Rx ring count.
- Significant refactoring efforts in the STMMAC driver, which
supports Synopsys turn-key MAC IP integrated into a ton of SoCs.
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support PPS in/out on all pins
- Intel (100G, ice, idpf):
- ice: implement standard ethtool and timestamping stats
- i40e: support setting the max number of MAC addresses per VF
- iavf: support RSS of GTP tunnels for 5G and LTE deployments
- nVidia/Mellanox (mlx5):
- reduce downtime on interface reconfiguration
- disable being an XDP redirect target by default (same as
other drivers) to avoid wasting resources if feature is
unused
- Meta (fbnic):
- add support for Linux-managed PCS on 25G, 50G, and 100G links
- Wangxun:
- support Rx descriptor merge, and Tx head writeback
- support Rx coalescing offload
- support 25G SPF and 40G QSFP modules
- Ethernet virtual:
- Google (gve):
- allow ethtool to configure rx_buf_len
- implement XDP HW RX Timestamping support for DQ descriptor
format
- Microsoft vNIC (mana):
- support HW link state events
- handle hardware recovery events when probing the device
- Ethernet NICs consumer, and embedded:
- usbnet: add support for Byte Queue Limits (BQL)
- AMD (amd-xgbe):
- add device selftests
- NXP (enetc):
- add i.MX94 support
- Broadcom integrated MACs (bcmgenet, bcmasp):
- bcmasp: add support for PHY-based Wake-on-LAN
- Broadcom switches (b53):
- support port isolation
- support BCM5389/97/98 and BCM63XX ARL formats
- Lantiq/MaxLinear switches:
- support bridge FDB entries on the CPU port
- use regmap for register access
- allow user to enable/disable learning
- support Energy Efficient Ethernet
- support configuring RMII clock delays
- add tagging driver for MaxLinear GSW1xx switches
- Synopsys (stmmac):
- support using the HW clock in free running mode
- add Eswin EIC7700 support
- add Rockchip RK3506 support
- add Altera Agilex5 support
- Cadence (macb):
- cleanup and consolidate descriptor and DMA address handling
- add EyeQ5 support
- TI:
- icssg-prueth: support AF_XDP
- Airoha access points:
- add missing Ethernet stats and link state callback
- add AN7583 support
- support out-of-order Tx completion processing
- Power over Ethernet:
- pd692x0: preserve PSE configuration across reboots
- add support for TPS23881B devices
- Ethernet PHYs:
- Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support
- Support 50G SerDes and 100G interfaces in Linux-managed PHYs
- micrel:
- support for non PTP SKUs of lan8814
- enable in-band auto-negotiation on lan8814
- realtek:
- cable testing support on RTL8224
- interrupt support on RTL8221B
- motorcomm: support for PHY LEDs on YT853
- microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag
- mscc: support for PHY LED control
- CAN drivers:
- m_can: add support for optional reset and system wake up
- remove can_change_mtu() obsoleted by core handling
- mcp251xfd: support GPIO controller functionality
- Bluetooth:
- add initial support for PASTa
- WiFi:
- split ieee80211.h file, it's way too big
- improvements in VHT radiotap reporting, S1G, Channel Switch
Announcement handling, rate tracking in mesh networks
- improve multi-radio monitor mode support, and add a cfg80211
debugfs interface for it
- HT action frame handling on 6 GHz
- initial chanctx work towards NAN
- MU-MIMO sniffer improvements
- WiFi drivers:
- RealTek (rtw89):
- support USB devices RTL8852AU and RTL8852CU
- initial work for RTL8922DE
- improved injection support
- Intel:
- iwlwifi: new sniffer API support
- MediaTek (mt76):
- WED support for >32-bit DMA
- airoha NPU support
- regdomain improvements
- continued WiFi7/MLO work
- Qualcomm/Atheros:
- ath10k: factory test support
- ath11k: TX power insertion support
- ath12k: BSS color change support
- ath12k: statistics improvements
- brcmfmac: Acer A1 840 tablet quirk
- rtl8xxxu: 40 MHz connection fixes/support"
* tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1381 commits)
net: page_pool: sanitise allocation order
net: page pool: xa init with destroy on pp init
net/mlx5e: Support XDP target xmit with dummy program
net/mlx5e: Update XDP features in switch channels
selftests/tc-testing: Test CAKE scheduler when enqueue drops packets
net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop
wireguard: netlink: generate netlink code
wireguard: uapi: generate header with ynl-gen
wireguard: uapi: move flag enums
wireguard: uapi: move enum wg_cmd
wireguard: netlink: add YNL specification
selftests: drv-net: Fix tolerance calculation in devlink_rate_tc_bw.py
selftests: drv-net: Fix and clarify TC bandwidth split in devlink_rate_tc_bw.py
selftests: drv-net: Set shell=True for sysfs writes in devlink_rate_tc_bw.py
selftests: drv-net: Use Iperf3Runner in devlink_rate_tc_bw.py
selftests: drv-net: introduce Iperf3Runner for measurement use cases
selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS
net: ps3_gelic_net: Use napi_alloc_skb() and napi_gro_receive()
Documentation: net: dsa: mention simple HSR offload helpers
Documentation: net: dsa: mention availability of RedBox
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
- Convert selftests/bpf/test_tc_edt and test_tc_tunnel from .sh to
test_progs runner (Alexis Lothoré)
- Convert selftests/bpf/test_xsk to test_progs runner (Bastien
Curutchet)
- Replace bpf memory allocator with kmalloc_nolock() in
bpf_local_storage (Amery Hung), and in bpf streams and range tree
(Puranjay Mohan)
- Introduce support for indirect jumps in BPF verifier and x86 JIT
(Anton Protopopov) and arm64 JIT (Puranjay Mohan)
- Remove runqslower bpf tool (Hoyeon Lee)
- Fix corner cases in the verifier to close several syzbot reports
(Eduard Zingerman, KaFai Wan)
- Several improvements in deadlock detection in rqspinlock (Kumar
Kartikeya Dwivedi)
- Implement "jmp" mode for BPF trampoline and corresponding
DYNAMIC_FTRACE_WITH_JMP. It improves "fexit" program type performance
from 80 M/s to 136 M/s. With Steven's Ack. (Menglong Dong)
- Add ability to test non-linear skbs in BPF_PROG_TEST_RUN (Paul
Chaignon)
- Do not let BPF_PROG_TEST_RUN emit invalid GSO types to stack (Daniel
Borkmann)
- Generalize buildid reader into bpf_dynptr (Mykyta Yatsenko)
- Optimize bpf_map_update_elem() for map-in-map types (Ritesh
Oedayrajsingh Varma)
- Introduce overwrite mode for BPF ring buffer (Xu Kuohai)
* tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (169 commits)
bpf: optimize bpf_map_update_elem() for map-in-map types
bpf: make kprobe_multi_link_prog_run always_inline
selftests/bpf: do not hardcode target rate in test_tc_edt BPF program
selftests/bpf: remove test_tc_edt.sh
selftests/bpf: integrate test_tc_edt into test_progs
selftests/bpf: rename test_tc_edt.bpf.c section to expose program type
selftests/bpf: Add success stats to rqspinlock stress test
rqspinlock: Precede non-head waiter queueing with AA check
rqspinlock: Disable spinning for trylock fallback
rqspinlock: Use trylock fallback when per-CPU rqnode is busy
rqspinlock: Perform AA checks immediately
rqspinlock: Enclose lock/unlock within lock entry acquisitions
bpf: Remove runqslower tool
selftests/bpf: Remove usage of lsm/file_alloc_security in selftest
bpf: Disable file_alloc_security hook
bpf: check for insn arrays in check_ptr_alignment
bpf: force BPF_F_RDONLY_PROG on insn array creation
bpf: Fix exclusive map memory leak
selftests/bpf: Make CS length configurable for rqspinlock stress test
selftests/bpf: Add lock wait time stats to rqspinlock stress test
...
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git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Allow creaing nbcon console drivers with an unsafe write_atomic()
callback that can only be called by the final nbcon_atomic_flush_unsafe().
Otherwise, the driver would rely on the kthread.
It is going to be used as the-best-effort approach for an
experimental nbcon netconsole driver, see
https://lore.kernel.org/r/20251121-nbcon-v1-2-503d17b2b4af@debian.org
Note that a safe .write_atomic() callback is supposed to work in NMI
context. But some networking drivers are not safe even in IRQ
context:
https://lore.kernel.org/r/oc46gdpmmlly5o44obvmoatfqo5bhpgv7pabpvb6sjuqioymcg@gjsma3ghoz35
In an ideal world, all networking drivers would be fixed first and
the atomic flush would be blocked only in NMI context. But it brings
the question how reliable networking drivers are when the system is
in a bad state. They might block flushing more reliable serial
consoles which are more suitable for serious debugging anyway.
- Allow to use the last 4 bytes of the printk ring buffer.
- Prevent queuing IRQ work and block printk kthreads when consoles are
suspended. Otherwise, they create non-necessary churn or even block
the suspend.
- Release console_lock() between each record in the kthread used for
legacy consoles on RT. It might significantly speed up the boot.
- Release nbcon context between each record in the atomic flush. It
prevents stalls of the related printk kthread after it has lost the
ownership in the middle of a record
- Add support for NBCON consoles into KDB
- Add %ptsP modifier for printing struct timespec64 and use it where
possible
- Misc code clean up
* tag 'printk-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (48 commits)
printk: Use console_is_usable on console_unblank
arch: um: kmsg_dump: Use console_is_usable
drivers: serial: kgdboc: Drop checks for CON_ENABLED and CON_BOOT
lib/vsprintf: Unify FORMAT_STATE_NUM handlers
printk: Avoid irq_work for printk_deferred() on suspend
printk: Avoid scheduling irq_work on suspend
printk: Allow printk_trigger_flush() to flush all types
tracing: Switch to use %ptSp
scsi: snic: Switch to use %ptSp
scsi: fnic: Switch to use %ptSp
s390/dasd: Switch to use %ptSp
ptp: ocp: Switch to use %ptSp
pps: Switch to use %ptSp
PCI: epf-test: Switch to use %ptSp
net: dsa: sja1105: Switch to use %ptSp
mmc: mmc_test: Switch to use %ptSp
media: av7110: Switch to use %ptSp
ipmi: Switch to use %ptSp
igb: Switch to use %ptSp
e1000e: Switch to use %ptSp
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Rewrite memcpy_sglist from scratch
- Add on-stack AEAD request allocation
- Fix partial block processing in ahash
Algorithms:
- Remove ansi_cprng
- Remove tcrypt tests for poly1305
- Fix EINPROGRESS processing in authenc
- Fix double-free in zstd
Drivers:
- Use drbg ctr helper when reseeding xilinx-trng
- Add support for PCI device 0x115A to ccp
- Add support of paes in caam
- Add support for aes-xts in dthev2
Others:
- Use likely in rhashtable lookup
- Fix lockdep false-positive in padata by removing a helper"
* tag 'v6.19-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (71 commits)
crypto: zstd - fix double-free in per-CPU stream cleanup
crypto: ahash - Zero positive err value in ahash_update_finish
crypto: ahash - Fix crypto_ahash_import with partial block data
crypto: lib/mpi - use min() instead of min_t()
crypto: ccp - use min() instead of min_t()
hwrng: core - use min3() instead of nested min_t()
crypto: aesni - ctr_crypt() use min() instead of min_t()
crypto: drbg - Delete unused ctx from struct sdesc
crypto: testmgr - Add missing DES weak and semi-weak key tests
Revert "crypto: scatterwalk - Move skcipher walk and use it for memcpy_sglist"
crypto: scatterwalk - Fix memcpy_sglist() to always succeed
crypto: iaa - Request to add Kanchana P Sridhar to Maintainers.
crypto: tcrypt - Remove unused poly1305 support
crypto: ansi_cprng - Remove unused ansi_cprng algorithm
crypto: asymmetric_keys - fix uninitialized pointers with free attribute
KEYS: Avoid -Wflex-array-member-not-at-end warning
crypto: ccree - Correctly handle return of sg_nents_for_len
crypto: starfive - Correctly handle return of sg_nents_for_len
crypto: iaa - Fix incorrect return value in save_iaa_wq()
crypto: zstd - Remove unnecessary size_t cast
...
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|
Remove newlines and tabs from the annotation macros so the invoking code
can insert them as needed to match the style of the surrounding code.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://patch.msgid.link/66305834c2eb78f082217611b756231ae9c0b555.1764694625.git.jpoimboe@kernel.org
|
|
Instead of manually annotating each __ex_table entry, just make the
section mergeable and store the entry size in the ELF section header.
Either way works for objtool create_fake_symbols(), this way produces
cleaner code generation.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://patch.msgid.link/b858cb7891c1ba0080e22a9c32595e6c302435e2.1764694625.git.jpoimboe@kernel.org
|
|
Instead of manually annotating each .altinstructions entry, just make
the section mergeable and store the entry size in the ELF section
header.
Either way works for objtool create_fake_symbols(), this way produces
cleaner code generation.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://patch.msgid.link/5ac04e6db5be6453dce8003a771ebb0c47b4cd7a.1764694625.git.jpoimboe@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull arm64 FPSIMD on-stack buffer updates from Eric Biggers:
"This is a core arm64 change. However, I was asked to take this because
most uses of kernel-mode FPSIMD are in crypto or CRC code.
In v6.8, the size of task_struct on arm64 increased by 528 bytes due
to the new 'kernel_fpsimd_state' field. This field was added to allow
kernel-mode FPSIMD code to be preempted.
Unfortunately, 528 bytes is kind of a lot for task_struct. This
regression in the task_struct size was noticed and reported.
Recover that space by making this state be allocated on the stack at
the beginning of each kernel-mode FPSIMD section.
To make it easier for all the users of kernel-mode FPSIMD to do that
correctly, introduce and use a 'scoped_ksimd' abstraction"
* tag 'fpsimd-on-stack-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (23 commits)
lib/crypto: arm64: Move remaining algorithms to scoped ksimd API
lib/crypto: arm/blake2b: Move to scoped ksimd API
arm64/fpsimd: Allocate kernel mode FP/SIMD buffers on the stack
arm64/fpu: Enforce task-context only for generic kernel mode FPU
net/mlx5: Switch to more abstract scoped ksimd guard API on arm64
arm64/xorblocks: Switch to 'ksimd' scoped guard API
crypto/arm64: sm4 - Switch to 'ksimd' scoped guard API
crypto/arm64: sm3 - Switch to 'ksimd' scoped guard API
crypto/arm64: sha3 - Switch to 'ksimd' scoped guard API
crypto/arm64: polyval - Switch to 'ksimd' scoped guard API
crypto/arm64: nhpoly1305 - Switch to 'ksimd' scoped guard API
crypto/arm64: aes-gcm - Switch to 'ksimd' scoped guard API
crypto/arm64: aes-blk - Switch to 'ksimd' scoped guard API
crypto/arm64: aes-ccm - Switch to 'ksimd' scoped guard API
raid6: Move to more abstract 'ksimd' guard API
crypto: aegis128-neon - Move to more abstract 'ksimd' guard API
crypto/arm64: sm4-ce-gcm - Avoid pointless yield of the NEON unit
crypto/arm64: sm4-ce-ccm - Avoid pointless yield of the NEON unit
crypto/arm64: aes-ce-ccm - Avoid pointless yield of the NEON unit
lib/crc: Switch ARM and arm64 to 'ksimd' scoped guard API
...
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull AES-GCM optimizations from Eric Biggers:
"More optimizations and cleanups for the x86_64 AES-GCM code:
- Add a VAES+AVX2 optimized implementation of AES-GCM. This is very
helpful on CPUs that have VAES but not AVX512, such as AMD Zen 3.
- Make the VAES+AVX512 optimized implementation of AES-GCM handle
large amounts of associated data efficiently.
- Remove the "avx10_256" implementation of AES-GCM. It's superseded
by the VAES+AVX2 optimized implementation.
- Rename the "avx10_512" implementation to "avx512"
Overall, this fills in a gap where AES-GCM wasn't fully optimized on
some recent CPUs. It also drops code that won't be as useful as
initially expected due to AVX10/256 being dropped from the AVX10 spec"
* tag 'aes-gcm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
crypto: x86/aes-gcm-vaes-avx2 - initialize full %rax return register
crypto: x86/aes-gcm - optimize long AAD processing with AVX512
crypto: x86/aes-gcm - optimize AVX512 precomputation of H^2 from H^1
crypto: x86/aes-gcm - revise some comments in AVX512 code
crypto: x86/aes-gcm - reorder AVX512 precompute and aad_update functions
crypto: x86/aes-gcm - clean up AVX512 code to assume 512-bit vectors
crypto: x86/aes-gcm - rename avx10 and avx10_512 to avx512
crypto: x86/aes-gcm - remove VAES+AVX10/256 optimized code
crypto: x86/aes-gcm - add VAES+AVX2 optimized code
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers:
"This is the main crypto library pull request for 6.19. It includes:
- Add SHA-3 support to lib/crypto/, including support for both the
hash functions and the extendable-output functions. Reimplement the
existing SHA-3 crypto_shash support on top of the library.
This is motivated mainly by the upcoming support for the ML-DSA
signature algorithm, which needs the SHAKE128 and SHAKE256
functions. But even on its own it's a useful cleanup.
This also fixes the longstanding issue where the
architecture-optimized SHA-3 code was disabled by default.
- Add BLAKE2b support to lib/crypto/, and reimplement the existing
BLAKE2b crypto_shash support on top of the library.
This is motivated mainly by btrfs, which supports BLAKE2b
checksums. With this change, all btrfs checksum algorithms now have
library APIs. btrfs is planned to start just using the library
directly.
This refactor also improves consistency between the BLAKE2b code
and BLAKE2s code. And as usual, it also fixes the issue where the
architecture-optimized BLAKE2b code was disabled by default.
- Add POLYVAL support to lib/crypto/, replacing the existing POLYVAL
support in crypto_shash. Reimplement HCTR2 on top of the library.
This simplifies the code and improves HCTR2 performance. As usual,
it also makes the architecture-optimized code be enabled by
default. The generic implementation of POLYVAL is greatly improved
as well.
- Clean up the BLAKE2s code
- Add FIPS self-tests for SHA-1, SHA-2, and SHA-3"
* tag 'libcrypto-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (37 commits)
fscrypt: Drop obsolete recommendation to enable optimized POLYVAL
crypto: polyval - Remove the polyval crypto_shash
crypto: hctr2 - Convert to use POLYVAL library
lib/crypto: x86/polyval: Migrate optimized code into library
lib/crypto: arm64/polyval: Migrate optimized code into library
lib/crypto: polyval: Add POLYVAL library
crypto: polyval - Rename conflicting functions
lib/crypto: x86/blake2s: Use vpternlogd for 3-input XORs
lib/crypto: x86/blake2s: Avoid writing back unchanged 'f' value
lib/crypto: x86/blake2s: Improve readability
lib/crypto: x86/blake2s: Use local labels for data
lib/crypto: x86/blake2s: Drop check for nblocks == 0
lib/crypto: x86/blake2s: Fix 32-bit arg treated as 64-bit
lib/crypto: arm, arm64: Drop filenames from file comments
lib/crypto: arm/blake2s: Fix some comments
crypto: s390/sha3 - Remove superseded SHA-3 code
crypto: sha3 - Reimplement using library API
crypto: jitterentropy - Use default sha3 implementation
lib/crypto: s390/sha3: Add optimized one-shot SHA-3 digest functions
lib/crypto: sha3: Support arch overrides of one-shot digest functions
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"These are the arm64 updates for 6.19.
The biggest part is the Arm MPAM driver under drivers/resctrl/.
There's a patch touching mm/ to handle spurious faults for huge pmd
(similar to the pte version). The corresponding arm64 part allows us
to avoid the TLB maintenance if a (huge) page is reused after a write
fault. There's EFI refactoring to allow runtime services with
preemption enabled and the rest is the usual perf/PMU updates and
several cleanups/typos.
Summary:
Core features:
- Basic Arm MPAM (Memory system resource Partitioning And Monitoring)
driver under drivers/resctrl/ which makes use of the fs/rectrl/ API
Perf and PMU:
- Avoid cycle counter on multi-threaded CPUs
- Extend CSPMU device probing and add additional filtering support
for NVIDIA implementations
- Add support for the PMUs on the NoC S3 interconnect
- Add additional compatible strings for new Cortex and C1 CPUs
- Add support for data source filtering to the SPE driver
- Add support for i.MX8QM and "DB" PMU in the imx PMU driver
Memory managemennt:
- Avoid broadcast TLBI if page reused in write fault
- Elide TLB invalidation if the old PTE was not valid
- Drop redundant cpu_set_*_tcr_t0sz() macros
- Propagate pgtable_alloc() errors outside of __create_pgd_mapping()
- Propagate return value from __change_memory_common()
ACPI and EFI:
- Call EFI runtime services without disabling preemption
- Remove unused ACPI function
Miscellaneous:
- ptrace support to disable streaming on SME-only systems
- Improve sysreg generation to include a 'Prefix' descriptor
- Replace __ASSEMBLY__ with __ASSEMBLER__
- Align register dumps in the kselftest zt-test
- Remove some no longer used macros/functions
- Various spelling corrections"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (94 commits)
arm64/mm: Document why linear map split failure upon vm_reset_perms is not problematic
arm64/pageattr: Propagate return value from __change_memory_common
arm64/sysreg: Remove unused define ARM64_FEATURE_FIELD_BITS
KVM: arm64: selftests: Consider all 7 possible levels of cache
KVM: arm64: selftests: Remove ARM64_FEATURE_FIELD_BITS and its last user
arm64: atomics: lse: Remove unused parameters from ATOMIC_FETCH_OP_AND macros
Documentation/arm64: Fix the typo of register names
ACPI: GTDT: Get rid of acpi_arch_timer_mem_init()
perf: arm_spe: Add support for filtering on data source
perf: Add perf_event_attr::config4
perf/imx_ddr: Add support for PMU in DB (system interconnects)
perf/imx_ddr: Get and enable optional clks
perf/imx_ddr: Move ida_alloc() from ddr_perf_init() to ddr_perf_probe()
dt-bindings: perf: fsl-imx-ddr: Add compatible string for i.MX8QM, i.MX8QXP and i.MX8DXL
arm64: remove duplicate ARCH_HAS_MEM_ENCRYPT
arm64: mm: use untagged address to calculate page index
MAINTAINERS: new entry for MPAM Driver
arm_mpam: Add kunit tests for props_mismatch()
arm_mpam: Add kunit test for bitmap reset
arm_mpam: Add helper to reset saved mbwu state
...
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Provide a new interface for dynamic configuration and deconfiguration
of hotplug memory, allowing with and without memmap_on_memory
support. This makes the way memory hotplug is handled on s390 much
more similar to other architectures
- Remove compat support. There shouldn't be any compat user space
around anymore, therefore get rid of a lot of code which also doesn't
need to be tested anymore
- Add stackprotector support. GCC 16 will get new compiler options,
which allow to generate code required for kernel stackprotector
support
- Merge pai_crypto and pai_ext PMU drivers into a new driver. This
removes a lot of duplicated code. The new driver is also extendable
and allows to support new PMUs
- Add driver override support for AP queues
- Rework and extend zcrypt and AP trace events to allow for tracing of
crypto requests
- Support block sizes larger than 65535 bytes for CCW tape devices
- Since the rework of the virtual kernel address space the module area
and the kernel image are within the same 4GB area. This eliminates
the need of weak per cpu variables. Get rid of
ARCH_MODULE_NEEDS_WEAK_PER_CPU
- Various other small improvements and fixes
* tag 's390-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (92 commits)
watchdog: diag288_wdt: Remove KMSG_COMPONENT macro
s390/entry: Use lay instead of aghik
s390/vdso: Get rid of -m64 flag handling
s390/vdso: Rename vdso64 to vdso
s390: Rename head64.S to head.S
s390/vdso: Use common STABS_DEBUG and DWARF_DEBUG macros
s390: Add stackprotector support
s390/modules: Simplify module_finalize() slightly
s390: Remove KMSG_COMPONENT macro
s390/percpu: Get rid of ARCH_MODULE_NEEDS_WEAK_PER_CPU
s390/ap: Restrict driver_override versus apmask and aqmask use
s390/ap: Rename mutex ap_perms_mutex to ap_attr_mutex
s390/ap: Support driver_override for AP queue devices
s390/ap: Use all-bits-one apmask/aqmask for vfio in_use() checks
s390/debug: Update description of resize operation
s390/syscalls: Switch to generic system call table generation
s390/syscalls: Remove system call table pointer from thread_struct
s390/uapi: Remove 31 bit support from uapi header files
s390: Remove compat support
tools: Remove s390 compat support
...
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k update from Geert Uytterhoeven:
- defconfig update
* tag 'm68k-for-v6.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: defconfig: Update defconfigs for v6.18-rc1
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 CPU feature updates from Dave Hansen:
"The biggest thing of note here is Linear Address Space Separation
(LASS). It represents the first time I can think of that the
upper=>kernel/lower=>user address space convention is actually
recognized by the hardware on x86. It ensures that userspace can not
even get the hardware to _start_ page walks for the kernel address
space. This, of course, is a really nice generic side channel defense.
This is really only a down payment on LASS support. There are still
some details to work out in its interaction with EFI calls and
vsyscall emulation. For now, LASS is disabled if either of those
features is compiled in (which is almost always the case).
There's also one straggler commit in here which converts an
under-utilized AMD CPU feature leaf into a generic Linux-defined leaf
so more feature can be packed in there.
Summary:
- Enable Linear Address Space Separation (LASS)
- Change X86_FEATURE leaf 17 from an AMD leaf to Linux-defined"
* tag 'x86_cpu_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Enable LASS during CPU initialization
selftests/x86: Update the negative vsyscall tests to expect a #GP
x86/traps: Communicate a LASS violation in #GP message
x86/kexec: Disable LASS during relocate kernel
x86/alternatives: Disable LASS when patching kernel code
x86/asm: Introduce inline memcpy and memset
x86/cpu: Add an LASS dependency on SMAP
x86/cpufeatures: Enumerate the LASS feature bits
x86/cpufeatures: Make X86_FEATURE leaf 17 Linux-specific
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 entry update from Dave Hansen:
"This one is pretty trivial: fix a badly-named FRED data structure
member"
* tag 'x86_entry_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fred: Fix 64bit identifier in fred_ss
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Dave Hansen:
"The most significant are some changes to ensure that symbols exported
for KVM are used only by KVM modules themselves, along with some
related cleanups.
In true x86/misc fashion, the other patch is completely unrelated and
just enhances an existing pr_warn() to make it clear to users how they
have tainted their kernel when something is mucking with MSRs.
Summary:
- Make MSR-induced taint easier for users to track down
- Restrict KVM-specific exports to KVM itself"
* tag 'x86_misc_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Restrict KVM-induced symbol exports to KVM modules where obvious/possible
x86/mm: Drop unnecessary export of "ptdump_walk_pgd_level_debugfs"
x86/mtrr: Drop unnecessary export of "mtrr_state"
x86/bugs: Drop unnecessary export of "x86_spec_ctrl_base"
x86/msr: Add CPU_OUT_OF_SPEC taint name to "unrecognized" pr_warn(msg)
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SGX updates from Dave HansenL
"The main content here is adding support for the new EUPDATESVN SGX
ISA. Before this, folks who updated microcode had to reboot before
enclaves could attest to the new microcode. The new functionality lets
them do this without a reboot.
The rest are some nice, but relatively mundane comment and kernel-doc
fixups.
Summary:
- Allow security version (SVN) updates so enclaves can attest to new
microcode
- Fix kernel docs typos"
* tag 'x86_sgx_for_6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Fix a typo in the kernel-doc comment for enum sgx_attribute
x86/sgx: Remove superfluous asterisk from copyright comment in asm/sgx.h
x86/sgx: Document structs and enums with '@', not '%'
x86/sgx: Add kernel-doc descriptions for params passed to vDSO user handler
x86/sgx: Add a missing colon in kernel-doc markup for "struct sgx_enclave_run"
x86/sgx: Enable automatic SVN updates for SGX enclaves
x86/sgx: Implement ENCLS[EUPDATESVN]
x86/sgx: Define error codes for use by ENCLS[EUPDATESVN]
x86/cpufeatures: Add X86_FEATURE_SGX_EUPDATESVN feature flag
x86/sgx: Introduce functions to count the sgx_(vepc_)open()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Borislav Petkov:
- Use the proper accessors when reading CR3 as part of the page level
transitions (5-level to 4-level, the use case being kexec) so that
only the physical address in CR3 is picked up and not flags which are
above the physical mask shift
- Clean up and unify __phys_addr_symbol() definitions
* tag 'x86_mm_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/libstub: Fix page table access in 5-level to 4-level paging transition
x86/boot: Fix page table access in 5-level to 4-level paging transition
x86/mm: Unify __phys_addr_symbol()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 CPU mitigation updates from Borislav Petkov:
- Convert the tsx= cmdline parsing to use early_param()
- Cleanup forward declarations gunk in bugs.c
* tag 'x86_bugs_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bugs: Get rid of the forward declarations
x86/tsx: Get the tsx= command line parameter with early_param()
x86/tsx: Make tsx_ctrl_state static
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Largely cleanups along with a change to save XSS to the GHCB
(Guest-Host Communication Block) in SEV-ES guests so that the
hypervisor can determine the guest's XSAVES buffer size properly
and thus support shadow stacks in AMD confidential guests
* tag 'x86_sev_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cc: Fix enum spelling to fix kernel-doc warnings
x86/boot: Drop unused sev_enable() fallback
x86/coco/sev: Convert has_cpuflag() to use cpu_feature_enabled()
x86/sev: Include XSS value in GHCB CPUID request
x86/boot: Move boot_*msr helpers to asm/shared/msr.h
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Borislav Petkov:
- The mandatory pile of cleanups the cat drags in every merge window
* tag 'x86_cleanups_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Clean up whitespace in a20.c
x86/mm: Delete disabled debug code
x86/{boot,mtrr}: Remove unused function declarations
x86/percpu: Use BIT_WORD() and BIT_MASK() macros
x86/cpufeatures: Correct LKGS feature flag description
x86/idtentry: Add missing '*' to kernel-doc lines
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
- Add support for AMD's Smart Data Cache Injection feature which allows
for direct insertion of data from I/O devices into the L3 cache, thus
bypassing DRAM and saving its bandwidth; the resctrl side of the
feature allows the size of the L3 used for data injection to be
controlled
- Add Intel Clearwater Forest to the list of CPUs which support
Sub-NUMA clustering
- Other fixes and cleanups
* tag 'x86_cache_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
fs/resctrl: Update bit_usage to reflect io_alloc
fs/resctrl: Introduce interface to modify io_alloc capacity bitmasks
fs/resctrl: Modify struct rdt_parse_data to pass mode and CLOSID
fs/resctrl: Introduce interface to display io_alloc CBMs
fs/resctrl: Add user interface to enable/disable io_alloc feature
fs/resctrl: Introduce interface to display "io_alloc" support
x86,fs/resctrl: Implement "io_alloc" enable/disable handlers
x86,fs/resctrl: Detect io_alloc feature
x86/resctrl: Add SDCIAE feature in the command line options
x86/cpufeatures: Add support for L3 Smart Data Cache Injection Allocation Enforcement
fs/resctrl: Consider sparse masks when initializing new group's allocation
x86/resctrl: Support Sub-NUMA Cluster (SNC) mode on Clearwater Forest
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loading updates from Borislav Petkov:
- Add microcode staging support on Intel: it moves the sole microcode
blobs loading to a non-critical path so that microcode loading
latencies are kept at minimum. The actual "directing" the hardware to
load microcode is the only step which is done on the critical path.
This scheme is also opportunistic as in: on a failure, the machinery
falls back to normal loading
- Add the capability to the AMD side of the loader to select one of two
per-family/model/stepping patches: one is pre-Entrysign and the other
is post-Entrysign; with the goal to take care of machines which
haven't updated their BIOS yet - something they should absolutely do
as this is the only proper Entrysign fix
- Other small cleanups and fixlets
* tag 'x86_microcode_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Mark early_parse_cmdline() as __init
x86/microcode/AMD: Select which microcode patch to load
x86/microcode/intel: Enable staging when available
x86/microcode/intel: Support mailbox transfer
x86/microcode/intel: Implement staging handler
x86/microcode/intel: Define staging state struct
x86/microcode/intel: Establish staging control logic
x86/microcode: Introduce staging step to reduce late-loading time
x86/cpu/topology: Make primary thread mask available with SMP=n
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS updates from Borislav Petkov:
- The second part of the AMD MCA interrupts rework after the
last-minute show-stopper from the last merge window was sorted out.
After this, the AMD MCA deferred errors, thresholding and corrected
errors interrupt handlers use common MCA code and are tightly
integrated into the core MCA code, thereby getting rid of
considerable duplication. All culminating into allowing CMCI error
thresholding storms to be detected at AMD too, using the common
infrastructure
- Add support for two new MCA bank bits on AMD Zen6 which denote
whether the error address logged is a system physical address, which
obviates the need for it to be translated before further error
recovery can be done
* tag 'ras_core_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Handle AMD threshold interrupt storms
x86/mce: Do not clear bank's poll bit in mce_poll_banks on AMD SMCA systems
x86/mce: Add support for physical address valid bit
x86/mce: Save and use APEI corrected threshold limit
x86/mce/amd: Define threshold restart function for banks
x86/mce/amd: Remove redundant reset_block()
x86/mce/amd: Support SMCA Corrected Error Interrupt
x86/mce/amd: Enable interrupt vectors once per-CPU on SMCA systems
x86/mce: Unify AMD DFR handler with MCA Polling
x86/mce: Unify AMD THR handler with MCA Polling
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- imh_edac: Add a new EDAC driver for Intel Diamond Rapids and future
incarnations of this memory controllers architecture
- amd64_edac: Remove the legacy csrow sysfs interface which has been
deprecated and unused (we assume) for at least a decade
- Add the capability to fallback to BIOS-provided address translation
functionality (ACPI PRM) which can be used on systems unsupported by
the current AMD address translation library
- The usual fixes, fixlets, cleanups and improvements all over the
place
* tag 'edac_updates_for_v6.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
RAS/AMD/ATL: Replace bitwise_xor_bits() with hweight16()
EDAC/igen6: Fix error handling in igen6_edac driver
EDAC/imh: Setup 'imh_test' debugfs testing node
EDAC/{skx_comm,imh}: Detect 2-level memory configuration
EDAC/skx_common: Extend the maximum number of DRAM chip row bits
EDAC/{skx_common,imh}: Add EDAC driver for Intel Diamond Rapids servers
EDAC/skx_common: Prepare for skx_set_hi_lo()
EDAC/skx_common: Prepare for skx_get_edac_list()
EDAC/{skx_common,skx,i10nm}: Make skx_register_mci() independent of pci_dev
EDAC/ghes: Replace deprecated strcpy() in ghes_edac_report_mem_error()
EDAC/ie31200: Fix error handling in ie31200_register_mci
RAS/CEC: Replace use of system_wq with system_percpu_wq
EDAC: Remove the legacy EDAC sysfs interface
EDAC/amd64: Remove NUM_CONTROLLERS macro
EDAC/amd64: Generate ctl_name string at runtime
RAS/AMD/ATL: Require PRM support for future systems
ACPI: PRM: Add acpi_prm_handler_available()
RAS/AMD/ATL: Return error codes from helper functions
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https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
- SCA rework
- VIRT_XFER_TO_GUEST_WORK support
- Operation exception forwarding support
- Cleanups
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https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 6.19
- Support for userspace handling of synchronous external aborts (SEAs),
allowing the VMM to potentially handle the abort in a non-fatal
manner.
- Large rework of the VGIC's list register handling with the goal of
supporting more active/pending IRQs than available list registers in
hardware. In addition, the VGIC now supports EOImode==1 style
deactivations for IRQs which may occur on a separate vCPU than the
one that acked the IRQ.
- Support for FEAT_XNX (user / privileged execute permissions) and
FEAT_HAF (hardware update to the Access Flag) in the software page
table walkers and shadow MMU.
- Allow page table destruction to reschedule, fixing long need_resched
latencies observed when destroying a large VM.
- Minor fixes to KVM and selftests
|
|
KVM/riscv changes for 6.19
- SBI MPXY support for KVM guest
- New KVM_EXIT_FAIL_ENTRY_NO_VSFILE for the case when in-kernel
AIA virtualization fails to allocate IMSIC VS-file
- Support enabling dirty log gradually in small chunks
- Fix guest page fault within HLV* instructions
- Flush VS-stage TLB after VCPU migration for Andes cores
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD
LoongArch KVM changes for v6.19
1. Get VM PMU capability from HW GCFG register.
2. Add AVEC basic support.
3. Use 64-bit register definition for EIOINTC.
4. Add KVM timer test cases for tools/selftests.
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq core updates from Thomas Gleixner:
"Updates for the interrupt core and treewide cleanups:
- Rework of the Per Processor Interrupt (PPI) management on ARM[64]
PPI support was built under the assumption that the systems are
homogenous so that the same CPU local device types are connected to
them. That's unfortunately wishful thinking and created horrible
workarounds.
This rework provides affinity management for PPIs so that they can
be individually configured in the firmware tables and mops up the
related drivers all over the place.
- Prevent CPUSET/isolation changes to arbitrarily affine interrupt
threads to random CPUs, which ignores user or driver settings.
- Plug a harmless race in the interrupt affinity proc interface,
which allows to see a half updated mask
- Adjust the priority of secondary interrupt threads on RT, so that
the combination of primary and secondary thread emulates the
hardware interrupt plus thread scenario. Having them at the same
priority can cause starvation issues in some drivers"
* tag 'irq-core-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
genirq: Remove cpumask availability check on kthread affinity setting
genirq: Fix interrupt threads affinity vs. cpuset isolated partitions
genirq: Prevent early spurious wake-ups of interrupt threads
genirq: Use raw_spinlock_irq() in irq_set_affinity_notifier()
genirq/manage: Reduce priority of forced secondary interrupt handler
genirq/proc: Fix race in show_irq_affinity()
genirq: Fix percpu_devid irq affinity documentation
perf: arm_pmu: Kill last use of per-CPU cpu_armpmu pointer
irqdomain: Kill of_node_to_fwnode() helper
genirq: Kill irq_{g,s}et_percpu_devid_partition()
irqchip: Kill irq-partition-percpu
irqchip/apple-aic: Drop support for custom PMU irq partitions
irqchip/gic-v3: Drop support for custom PPI partitions
coresight: trbe: Request specific affinities for per CPU interrupts
perf: arm_spe_pmu: Request specific affinities for per CPU interrupts
perf: arm_pmu: Request specific affinities for per CPU NMIs/interrupts
genirq: Add request_percpu_irq_affinity() helper
genirq: Allow per-cpu interrupt sharing for non-overlapping affinities
genirq: Update request_percpu_nmi() to take an affinity
genirq: Add affinity to percpu_devid interrupt requests
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rseq updates from Thomas Gleixner:
"A large overhaul of the restartable sequences and CID management:
The recent enablement of RSEQ in glibc resulted in regressions which
are caused by the related overhead. It turned out that the decision to
invoke the exit to user work was not really a decision. More or less
each context switch caused that. There is a long list of small issues
which sums up nicely and results in a 3-4% regression in I/O
benchmarks.
The other detail which caused issues due to extra work in context
switch and task migration is the CID (memory context ID) management.
It also requires to use a task work to consolidate the CID space,
which is executed in the context of an arbitrary task and results in
sporadic uncontrolled exit latencies.
The rewrite addresses this by:
- Removing deprecated and long unsupported functionality
- Moving the related data into dedicated data structures which are
optimized for fast path processing.
- Caching values so actual decisions can be made
- Replacing the current implementation with a optimized inlined
variant.
- Separating fast and slow path for architectures which use the
generic entry code, so that only fault and error handling goes into
the TIF_NOTIFY_RESUME handler.
- Rewriting the CID management so that it becomes mostly invisible in
the context switch path. That moves the work of switching modes
into the fork/exit path, which is a reasonable tradeoff. That work
is only required when a process creates more threads than the
cpuset it is allowed to run on or when enough threads exit after
that. An artificial thread pool benchmarks which triggers this did
not degrade, it actually improved significantly.
The main effect in migration heavy scenarios is that runqueue lock
held time and therefore contention goes down significantly"
* tag 'core-rseq-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched/mmcid: Switch over to the new mechanism
sched/mmcid: Implement deferred mode change
irqwork: Move data struct to a types header
sched/mmcid: Provide CID ownership mode fixup functions
sched/mmcid: Provide new scheduler CID mechanism
sched/mmcid: Introduce per task/CPU ownership infrastructure
sched/mmcid: Serialize sched_mm_cid_fork()/exit() with a mutex
sched/mmcid: Provide precomputed maximal value
sched/mmcid: Move initialization out of line
signal: Move MMCID exit out of sighand lock
sched/mmcid: Convert mm CID mask to a bitmap
cpumask: Cache num_possible_cpus()
sched/mmcid: Use cpumask_weighted_or()
cpumask: Introduce cpumask_weighted_or()
sched/mmcid: Prevent pointless work in mm_update_cpus_allowed()
sched/mmcid: Move scheduler code out of global header
sched: Fixup whitespace damage
sched/mmcid: Cacheline align MM CID storage
sched/mmcid: Use proper data structures
sched/mmcid: Revert the complex CID management
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scoped user access updates from Thomas Gleixner:
"Scoped user mode access and related changes:
- Implement the missing u64 user access function on ARM when
CONFIG_CPU_SPECTRE=n.
This makes it possible to access a 64bit value in generic code with
[unsafe_]get_user(). All other architectures and ARM variants
provide the relevant accessors already.
- Ensure that ASM GOTO jump label usage in the user mode access
helpers always goes through a local C scope label indirection
inside the helpers.
This is required because compilers are not supporting that a ASM
GOTO target leaves a auto cleanup scope. GCC silently fails to emit
the cleanup invocation and CLANG fails the build.
[ Editor's note: gcc-16 will have fixed the code generation issue
in commit f68fe3ddda4 ("eh: Invoke cleanups/destructors in asm
goto jumps [PR122835]"). But we obviously have to deal with clang
and older versions of gcc, so.. - Linus ]
This provides generic wrapper macros and the conversion of affected
architecture code to use them.
- Scoped user mode access with auto cleanup
Access to user mode memory can be required in hot code paths, but
if it has to be done with user controlled pointers, the access is
shielded with a speculation barrier, so that the CPU cannot
speculate around the address range check. Those speculation
barriers impact performance quite significantly.
This cost can be avoided by "masking" the provided pointer so it is
guaranteed to be in the valid user memory access range and
otherwise to point to a guaranteed unpopulated address space. This
has to be done without branches so it creates an address dependency
for the access, which the CPU cannot speculate ahead.
This results in repeating and error prone programming patterns:
if (can_do_masked_user_access())
from = masked_user_read_access_begin((from));
else if (!user_read_access_begin(from, sizeof(*from)))
return -EFAULT;
unsafe_get_user(val, from, Efault);
user_read_access_end();
return 0;
Efault:
user_read_access_end();
return -EFAULT;
which can be replaced with scopes and automatic cleanup:
scoped_user_read_access(from, Efault)
unsafe_get_user(val, from, Efault);
return 0;
Efault:
return -EFAULT;
- Convert code which implements the above pattern over to
scope_user.*.access(). This also corrects a couple of imbalanced
masked_*_begin() instances which are harmless on most
architectures, but prevent PowerPC from implementing the masking
optimization.
- Add a missing speculation barrier in copy_from_user_iter()"
* tag 'core-uaccess-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lib/strn*,uaccess: Use masked_user_{read/write}_access_begin when required
scm: Convert put_cmsg() to scoped user access
iov_iter: Add missing speculation barrier to copy_from_user_iter()
iov_iter: Convert copy_from_user_iter() to masked user access
select: Convert to scoped user access
x86/futex: Convert to scoped user access
futex: Convert to get/put_user_inline()
uaccess: Provide put/get_user_inline()
uaccess: Provide scoped user access regions
arm64: uaccess: Use unsafe wrappers for ASM GOTO
s390/uaccess: Use unsafe wrappers for ASM GOTO
riscv/uaccess: Use unsafe wrappers for ASM GOTO
powerpc/uaccess: Use unsafe wrappers for ASM GOTO
x86/uaccess: Use unsafe wrappers for ASM GOTO
uaccess: Provide ASM GOTO safe wrappers for unsafe_*_user()
ARM: uaccess: Implement missing __get_user_asm_dword()
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|
Include <linux/of.h> to avoid dependency on backlight header to include
it. Declares of_find_node_by_name(), of_property_match_string() and
of_node_put().
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 243ce64b2b37 ("backlight: Do not include <linux/fb.h> in header file")
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
Closes: https://lore.kernel.org/linuxppc-dev/CA+G9fYs8fn5URQx2+s2oNxdUgZkSrdLC0P1tNBW_n-6BaBkK2Q@mail.gmail.com/
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull bug handling infrastructure updates from Ingo Molnar:
"Core updates:
- Improve WARN(), which has vararg printf like arguments, to work
with the x86 #UD based WARN-optimizing infrastructure by hiding the
format in the bug_table and replacing this first argument with the
address of the bug-table entry, while making the actual function
that's called a UD1 instruction (Peter Zijlstra)
- Introduce the CONFIG_DEBUG_BUGVERBOSE_DETAILED Kconfig switch (Ingo
Molnar, s390 support by Heiko Carstens)
Fixes and cleanups:
- bugs/s390: Remove private WARN_ON() implementation (Heiko Carstens)
- <asm/bugs.h>: Make i386 use GENERIC_BUG_RELATIVE_POINTERS (Peter
Zijlstra)"
* tag 'core-bugs-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
x86/bugs: Make i386 use GENERIC_BUG_RELATIVE_POINTERS
x86/bug: Fix BUG_FORMAT vs KASLR
x86_64/bug: Inline the UD1
x86/bug: Implement WARN_ONCE()
x86_64/bug: Implement __WARN_printf()
x86/bug: Use BUG_FORMAT for DEBUG_BUGVERBOSE_DETAILED
x86/bug: Add BUG_FORMAT basics
bug: Allow architectures to provide __WARN_printf()
bug: Implement WARN_ON() using __WARN_FLAGS()
bug: Add report_bug_entry()
bug: Add BUG_FORMAT_ARGS infrastructure
bug: Clean up CONFIG_GENERIC_BUG_RELATIVE_POINTERS
bug: Add BUG_FORMAT infrastructure
x86: Rework __bug_table helpers
bugs/s390: Remove private WARN_ON() implementation
bugs/core: Reorganize fields in the first line of WARNING output, add ->comm[] output
bugs/sh: Concatenate 'cond_str' with '__FILE__' in __WARN_FLAGS(), to extend WARN_ON/BUG_ON output
bugs/parisc: Concatenate 'cond_str' with '__FILE__' in __WARN_FLAGS(), to extend WARN_ON/BUG_ON output
bugs/riscv: Concatenate 'cond_str' with '__FILE__' in __BUG_FLAGS(), to extend WARN_ON/BUG_ON output
bugs/riscv: Pass in 'cond_str' to __BUG_FLAGS()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
- x86/alternatives: Drop unnecessary test after call to
alt_replace_call() (Juergen Gross)
- x86/dumpstack: Prevent KASAN false positive warnings in
__show_regs() (Tengda Wu)
* tag 'x86-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/dumpstack: Prevent KASAN false positive warnings in __show_regs()
x86/alternative: Drop not needed test after call of alt_replace_call()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 math-emu fix from Ingo Molnar:
"A single fix for an ancient prototype in the math-emu code, by Arnd
Bergmann"
* tag 'x86-build-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/math-emu: Fix div_Xsig() prototype
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic updates from Ingo Molnar:
- x86/apic: Fix the frequency in apic=verbose log output (Julian
Stecklina)
- Simplify mp_irqdomain_alloc() slightly (Christophe JAILLET)
* tag 'x86-apic-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Fix frequency in apic=verbose log output
x86/ioapic: Simplify mp_irqdomain_alloc() slightly
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Scalability and load-balancing improvements:
- Enable scheduler feature NEXT_BUDDY (Mel Gorman)
- Reimplement NEXT_BUDDY to align with EEVDF goals (Mel Gorman)
- Skip sched_balance_running cmpxchg when balance is not due (Tim
Chen)
- Implement generic code for architecture specific sched domain NUMA
distances (Tim Chen)
- Optimize the NUMA distances of the sched-domains builds of Intel
Granite Rapids (GNR) and Clearwater Forest (CWF) platforms (Tim
Chen)
- Implement proportional newidle balance: a randomized algorithm that
runs newidle balancing proportional to its success rate. (Peter
Zijlstra)
Scheduler infrastructure changes:
- Implement the 'sched_change' scoped_guard() pattern for the entire
scheduler (Peter Zijlstra)
- More broadly utilize the sched_change guard (Peter Zijlstra)
- Add support to pick functions to take runqueue-flags (Joel
Fernandes)
- Provide and use set_need_resched_current() (Peter Zijlstra)
Fair scheduling enhancements:
- Forfeit vruntime on yield (Fernand Sieber)
- Only update stats for allowed CPUs when looking for dst group (Adam
Li)
CPU-core scheduling enhancements:
- Optimize core cookie matching check (Fernand Sieber)
Deadline scheduler fixes:
- Only set free_cpus for online runqueues (Doug Berger)
- Fix dl_server time accounting (Peter Zijlstra)
- Fix dl_server stop condition (Peter Zijlstra)
Proxy scheduling fixes:
- Yield the donor task (Fernand Sieber)
Fixes and cleanups:
- Fix do_set_cpus_allowed() locking (Peter Zijlstra)
- Fix migrate_disable_switch() locking (Peter Zijlstra)
- Remove double update_rq_clock() in __set_cpus_allowed_ptr_locked()
(Hao Jia)
- Increase sched_tick_remote timeout (Phil Auld)
- sched/deadline: Use cpumask_weight_and() in dl_bw_cpus() (Shrikanth
Hegde)
- sched/deadline: Clean up select_task_rq_dl() (Shrikanth Hegde)"
* tag 'sched-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
sched: Provide and use set_need_resched_current()
sched/fair: Proportional newidle balance
sched/fair: Small cleanup to update_newidle_cost()
sched/fair: Small cleanup to sched_balance_newidle()
sched/fair: Revert max_newidle_lb_cost bump
sched/fair: Reimplement NEXT_BUDDY to align with EEVDF goals
sched/fair: Enable scheduler feature NEXT_BUDDY
sched: Increase sched_tick_remote timeout
sched/fair: Have SD_SERIALIZE affect newidle balancing
sched/fair: Skip sched_balance_running cmpxchg when balance is not due
sched/deadline: Minor cleanup in select_task_rq_dl()
sched/deadline: Use cpumask_weight_and() in dl_bw_cpus
sched/deadline: Document dl_server
sched/deadline: Fix dl_server stop condition
sched/deadline: Fix dl_server time accounting
sched/core: Remove double update_rq_clock() in __set_cpus_allowed_ptr_locked()
sched/eevdf: Fix min_vruntime vs avg_vruntime
sched/core: Add comment explaining force-idle vruntime snapshots
sched/core: Optimize core cookie matching check
sched/proxy: Yield the donor task
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Callchain support:
- Add support for deferred user-space stack unwinding for perf,
enabled on x86. (Peter Zijlstra, Steven Rostedt)
- unwind_user/x86: Enable frame pointer unwinding on x86 (Josh
Poimboeuf)
x86 PMU support and infrastructure:
- x86/insn: Simplify for_each_insn_prefix() (Peter Zijlstra)
- x86/insn,uprobes,alternative: Unify insn_is_nop() (Peter Zijlstra)
Intel PMU driver:
- Large series to prepare for and implement architectural PEBS
support for Intel platforms such as Clearwater Forest (CWF) and
Panther Lake (PTL). (Dapeng Mi, Kan Liang)
- Check dynamic constraints (Kan Liang)
- Optimize PEBS extended config (Peter Zijlstra)
- cstates:
- Remove PC3 support from LunarLake (Zhang Rui)
- Add Pantherlake support (Zhang Rui)
- Clearwater Forest support (Zide Chen)
AMD PMU driver:
- x86/amd: Check event before enable to avoid GPF (George Kennedy)
Fixes and cleanups:
- task_work: Fix NMI race condition (Peter Zijlstra)
- perf/x86: Fix NULL event access and potential PEBS record loss
(Dapeng Mi)
- Misc other fixes and cleanups (Dapeng Mi, Ingo Molnar, Peter
Zijlstra)"
* tag 'perf-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits)
perf/x86/intel: Fix and clean up intel_pmu_drain_arch_pebs() type use
perf/x86/intel: Optimize PEBS extended config
perf/x86/intel: Check PEBS dyn_constraints
perf/x86/intel: Add a check for dynamic constraints
perf/x86/intel: Add counter group support for arch-PEBS
perf/x86/intel: Setup PEBS data configuration and enable legacy groups
perf/x86/intel: Update dyn_constraint base on PEBS event precise level
perf/x86/intel: Allocate arch-PEBS buffer and initialize PEBS_BASE MSR
perf/x86/intel: Process arch-PEBS records or record fragments
perf/x86/intel/ds: Factor out PEBS group processing code to functions
perf/x86/intel/ds: Factor out PEBS record processing code to functions
perf/x86/intel: Initialize architectural PEBS
perf/x86/intel: Correct large PEBS flag check
perf/x86/intel: Replace x86_pmu.drain_pebs calling with static call
perf/x86: Fix NULL event access and potential PEBS record loss
perf/x86: Remove redundant is_x86_event() prototype
entry,unwind/deferred: Fix unwind_reset_info() placement
unwind_user/x86: Fix arch=um build
perf: Support deferred user unwind
unwind_user/x86: Teach FP unwind about start of function
...
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- klp-build livepatch module generation (Josh Poimboeuf)
Introduce new objtool features and a klp-build script to generate
livepatch modules using a source .patch as input.
This builds on concepts from the longstanding out-of-tree kpatch
project which began in 2012 and has been used for many years to
generate livepatch modules for production kernels. However, this is a
complete rewrite which incorporates hard-earned lessons from 12+
years of maintaining kpatch.
Key improvements compared to kpatch-build:
- Integrated with objtool: Leverages objtool's existing control-flow
graph analysis to help detect changed functions.
- Works on vmlinux.o: Supports late-linked objects, making it
compatible with LTO, IBT, and similar.
- Simplified code base: ~3k fewer lines of code.
- Upstream: No more out-of-tree #ifdef hacks, far less cruft.
- Cleaner internals: Vastly simplified logic for
symbol/section/reloc inclusion and special section extraction.
- Robust __LINE__ macro handling: Avoids false positive binary diffs
caused by the __LINE__ macro by introducing a fix-patch-lines
script which injects #line directives into the source .patch to
preserve the original line numbers at compile time.
- Disassemble code with libopcodes instead of running objdump
(Alexandre Chartre)
- Disassemble support (-d option to objtool) by Alexandre Chartre,
which supports the decoding of various Linux kernel code generation
specials such as alternatives:
17ef: sched_balance_find_dst_group+0x62f mov 0x34(%r9),%edx
17f3: sched_balance_find_dst_group+0x633 | <alternative.17f3> | X86_FEATURE_POPCNT
17f3: sched_balance_find_dst_group+0x633 | call 0x17f8 <__sw_hweight64> | popcnt %rdi,%rax
17f8: sched_balance_find_dst_group+0x638 cmp %eax,%edx
... jump table alternatives:
1895: sched_use_asym_prio+0x5 test $0x8,%ch
1898: sched_use_asym_prio+0x8 je 0x18a9 <sched_use_asym_prio+0x19>
189a: sched_use_asym_prio+0xa | <jump_table.189a> | JUMP
189a: sched_use_asym_prio+0xa | jmp 0x18ae <sched_use_asym_prio+0x1e> | nop2
189c: sched_use_asym_prio+0xc mov $0x1,%eax
18a1: sched_use_asym_prio+0x11 and $0x80,%ecx
... exception table alternatives:
native_read_msr:
5b80: native_read_msr+0x0 mov %edi,%ecx
5b82: native_read_msr+0x2 | <ex_table.5b82> | EXCEPTION
5b82: native_read_msr+0x2 | rdmsr | resume at 0x5b84 <native_read_msr+0x4>
5b84: native_read_msr+0x4 shl $0x20,%rdx
.... x86 feature flag decoding (also see the X86_FEATURE_POPCNT
example in sched_balance_find_dst_group() above):
2faaf: start_thread_common.constprop.0+0x1f jne 0x2fba4 <start_thread_common.constprop.0+0x114>
2fab5: start_thread_common.constprop.0+0x25 | <alternative.2fab5> | X86_FEATURE_ALWAYS | X86_BUG_NULL_SEG
2fab5: start_thread_common.constprop.0+0x25 | jmp 0x2faba <.altinstr_aux+0x2f4> | jmp 0x4b0 <start_thread_common.constprop.0+0x3f> | nop5
2faba: start_thread_common.constprop.0+0x2a mov $0x2b,%eax
... NOP sequence shortening:
1048e2: snapshot_write_finalize+0xc2 je 0x104917 <snapshot_write_finalize+0xf7>
1048e4: snapshot_write_finalize+0xc4 nop6
1048ea: snapshot_write_finalize+0xca nop11
1048f5: snapshot_write_finalize+0xd5 nop11
104900: snapshot_write_finalize+0xe0 mov %rax,%rcx
104903: snapshot_write_finalize+0xe3 mov 0x10(%rdx),%rax
... and much more.
- Function validation tracing support (Alexandre Chartre)
- Various -ffunction-sections fixes (Josh Poimboeuf)
- Clang AutoFDO (Automated Feedback-Directed Optimizations) support
(Josh Poimboeuf)
- Misc fixes and cleanups (Borislav Petkov, Chen Ni, Dylan Hatch, Ingo
Molnar, John Wang, Josh Poimboeuf, Pankaj Raghav, Peter Zijlstra,
Thorsten Blum)
* tag 'objtool-core-2025-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
objtool: Fix segfault on unknown alternatives
objtool: Build with disassembly can fail when including bdf.h
objtool: Trim trailing NOPs in alternative
objtool: Add wide output for disassembly
objtool: Compact output for alternatives with one instruction
objtool: Improve naming of group alternatives
objtool: Add Function to get the name of a CPU feature
objtool: Provide access to feature and flags of group alternatives
objtool: Fix address references in alternatives
objtool: Disassemble jump table alternatives
objtool: Disassemble exception table alternatives
objtool: Print addresses with alternative instructions
objtool: Disassemble group alternatives
objtool: Print headers for alternatives
objtool: Preserve alternatives order
objtool: Add the --disas=<function-pattern> action
objtool: Do not validate IBT for .return_sites and .call_sites
objtool: Improve tracing of alternative instructions
objtool: Add functions to better name alternatives
objtool: Identify the different types of alternatives
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull fd prepare updates from Christian Brauner:
"This adds the FD_ADD() and FD_PREPARE() primitive. They simplify the
common pattern of get_unused_fd_flags() + create file + fd_install()
that is used extensively throughout the kernel and currently requires
cumbersome cleanup paths.
FD_ADD() - For simple cases where a file is installed immediately:
fd = FD_ADD(O_CLOEXEC, vfio_device_open_file(device));
if (fd < 0)
vfio_device_put_registration(device);
return fd;
FD_PREPARE() - For cases requiring access to the fd or file, or
additional work before publishing:
FD_PREPARE(fdf, O_CLOEXEC, sync_file->file);
if (fdf.err) {
fput(sync_file->file);
return fdf.err;
}
data.fence = fd_prepare_fd(fdf);
if (copy_to_user((void __user *)arg, &data, sizeof(data)))
return -EFAULT;
return fd_publish(fdf);
The primitives are centered around struct fd_prepare. FD_PREPARE()
encapsulates all allocation and cleanup logic and must be followed by
a call to fd_publish() which associates the fd with the file and
installs it into the caller's fdtable. If fd_publish() isn't called,
both are deallocated automatically. FD_ADD() is a shorthand that does
fd_publish() immediately and never exposes the struct to the caller.
I've implemented this in a way that it's compatible with the cleanup
infrastructure while also being usable separately. IOW, it's centered
around struct fd_prepare which is aliased to class_fd_prepare_t and so
we can make use of all the basica guard infrastructure"
* tag 'vfs-6.19-rc1.fd_prepare.fs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (42 commits)
io_uring: convert io_create_mock_file() to FD_PREPARE()
file: convert replace_fd() to FD_PREPARE()
vfio: convert vfio_group_ioctl_get_device_fd() to FD_ADD()
tty: convert ptm_open_peer() to FD_ADD()
ntsync: convert ntsync_obj_get_fd() to FD_PREPARE()
media: convert media_request_alloc() to FD_PREPARE()
hv: convert mshv_ioctl_create_partition() to FD_ADD()
gpio: convert linehandle_create() to FD_PREPARE()
pseries: port papr_rtas_setup_file_interface() to FD_ADD()
pseries: convert papr_platform_dump_create_handle() to FD_ADD()
spufs: convert spufs_gang_open() to FD_PREPARE()
papr-hvpipe: convert papr_hvpipe_dev_create_handle() to FD_PREPARE()
spufs: convert spufs_context_open() to FD_PREPARE()
net/socket: convert __sys_accept4_file() to FD_ADD()
net/socket: convert sock_map_fd() to FD_ADD()
net/kcm: convert kcm_ioctl() to FD_PREPARE()
net/handshake: convert handshake_nl_accept_doit() to FD_PREPARE()
secretmem: convert memfd_secret() to FD_ADD()
memfd: convert memfd_create() to FD_ADD()
bpf: convert bpf_token_create() to FD_PREPARE()
...
|
|
Fix most (17) kernel-doc warnings in x86_init.h (except for struct
x86_init_ops). The changes are:
- fix struct member name typos
- add ending ':' to struct member names
- add some missing struct member descriptions
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20251129002524.1196500-1-rdunlap@infradead.org
|
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull namespace updates from Christian Brauner:
"This contains substantial namespace infrastructure changes including a new
system call, active reference counting, and extensive header cleanups.
The branch depends on the shared kbuild branch for -fms-extensions support.
Features:
- listns() system call
Add a new listns() system call that allows userspace to iterate
through namespaces in the system. This provides a programmatic
interface to discover and inspect namespaces, addressing
longstanding limitations:
Currently, there is no direct way for userspace to enumerate
namespaces. Applications must resort to scanning /proc/*/ns/ across
all processes, which is:
- Inefficient - requires iterating over all processes
- Incomplete - misses namespaces not attached to any running
process but kept alive by file descriptors, bind mounts, or
parent references
- Permission-heavy - requires access to /proc for many processes
- No ordering or ownership information
- No filtering per namespace type
The listns() system call solves these problems:
ssize_t listns(const struct ns_id_req *req, u64 *ns_ids,
size_t nr_ns_ids, unsigned int flags);
struct ns_id_req {
__u32 size;
__u32 spare;
__u64 ns_id;
struct /* listns */ {
__u32 ns_type;
__u32 spare2;
__u64 user_ns_id;
};
};
Features include:
- Pagination support for large namespace sets
- Filtering by namespace type (MNT_NS, NET_NS, USER_NS, etc.)
- Filtering by owning user namespace
- Permission checks respecting namespace isolation
- Active Reference Counting
Introduce an active reference count that tracks namespace
visibility to userspace. A namespace is visible in the following
cases:
- The namespace is in use by a task
- The namespace is persisted through a VFS object (namespace file
descriptor or bind-mount)
- The namespace is a hierarchical type and is the parent of child
namespaces
The active reference count does not regulate lifetime (that's still
done by the normal reference count) - it only regulates visibility
to namespace file handles and listns().
This prevents resurrection of namespaces that are pinned only for
internal kernel reasons (e.g., user namespaces held by
file->f_cred, lazy TLB references on idle CPUs, etc.) which should
not be accessible via (1)-(3).
- Unified Namespace Tree
Introduce a unified tree structure for all namespaces with:
- Fixed IDs assigned to initial namespaces
- Lookup based solely on inode number
- Maintained list of owned namespaces per user namespace
- Simplified rbtree comparison helpers
Cleanups
- Header Reorganization:
- Move namespace types into separate header (ns_common_types.h)
- Decouple nstree from ns_common header
- Move nstree types into separate header
- Switch to new ns_tree_{node,root} structures with helper functions
- Use guards for ns_tree_lock
- Initial Namespace Reference Count Optimization
- Make all reference counts on initial namespaces a nop to avoid
pointless cacheline ping-pong for namespaces that can never go
away
- Drop custom reference count initialization for initial namespaces
- Add NS_COMMON_INIT() macro and use it for all namespaces
- pid: rely on common reference count behavior
- Miscellaneous Cleanups
- Rename exit_task_namespaces() to exit_nsproxy_namespaces()
- Rename is_initial_namespace() and make argument const
- Use boolean to indicate anonymous mount namespace
- Simplify owner list iteration in nstree
- nsfs: raise SB_I_NODEV, SB_I_NOEXEC, and DCACHE_DONTCACHE explicitly
- nsfs: use inode_just_drop()
- pidfs: raise DCACHE_DONTCACHE explicitly
- pidfs: simplify PIDFD_GET__NAMESPACE ioctls
- libfs: allow to specify s_d_flags
- cgroup: add cgroup namespace to tree after owner is set
- nsproxy: fix free_nsproxy() and simplify create_new_namespaces()
Fixes:
- setns(pidfd, ...) race condition
Fix a subtle race when using pidfds with setns(). When the target
task exits after prepare_nsset() but before commit_nsset(), the
namespace's active reference count might have been dropped. If
setns() then installs the namespaces, it would bump the active
reference count from zero without taking the required reference on
the owner namespace, leading to underflow when later decremented.
The fix resurrects the ownership chain if necessary - if the caller
succeeded in grabbing passive references, the setns() should
succeed even if the target task exits or gets reaped.
- Return EFAULT on put_user() error instead of success
- Make sure references are dropped outside of RCU lock (some
namespaces like mount namespace sleep when putting the last
reference)
- Don't skip active reference count initialization for network
namespace
- Add asserts for active refcount underflow
- Add asserts for initial namespace reference counts (both passive
and active)
- ipc: enable is_ns_init_id() assertions
- Fix kernel-doc comments for internal nstree functions
- Selftests
- 15 active reference count tests
- 9 listns() functionality tests
- 7 listns() permission tests
- 12 inactive namespace resurrection tests
- 3 threaded active reference count tests
- commit_creds() active reference tests
- Pagination and stress tests
- EFAULT handling test
- nsid tests fixes"
* tag 'namespace-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (103 commits)
pidfs: simplify PIDFD_GET_<type>_NAMESPACE ioctls
nstree: fix kernel-doc comments for internal functions
nsproxy: fix free_nsproxy() and simplify create_new_namespaces()
selftests/namespaces: fix nsid tests
ns: drop custom reference count initialization for initial namespaces
pid: rely on common reference count behavior
ns: add asserts for initial namespace active reference counts
ns: add asserts for initial namespace reference counts
ns: make all reference counts on initial namespace a nop
ipc: enable is_ns_init_id() assertions
fs: use boolean to indicate anonymous mount namespace
ns: rename is_initial_namespace()
ns: make is_initial_namespace() argument const
nstree: use guards for ns_tree_lock
nstree: simplify owner list iteration
nstree: switch to new structures
nstree: add helper to operate on struct ns_tree_{node,root}
nstree: move nstree types into separate header
nstree: decouple from ns_common header
ns: move namespace types into separate header
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- Cheaper MAY_EXEC handling for path lookup. This elides MAY_WRITE
permission checks during path lookup and adds the
IOP_FASTPERM_MAY_EXEC flag so filesystems like btrfs can avoid
expensive permission work.
- Hide dentry_cache behind runtime const machinery.
- Add German Maglione as virtiofs co-maintainer.
Cleanups:
- Tidy up and inline step_into() and walk_component() for improved
code generation.
- Re-enable IOCB_NOWAIT writes to files. This refactors file
timestamp update logic, fixing a layering bypass in btrfs when
updating timestamps on device files and improving FMODE_NOCMTIME
handling in VFS now that nfsd started using it.
- Path lookup optimizations extracting slowpaths into dedicated
routines and adding branch prediction hints for mntput_no_expire(),
fd_install(), lookup_slow(), and various other hot paths.
- Enable clang's -fms-extensions flag, requiring a JFS rename to
avoid conflicts.
- Remove spurious exports in fs/file_attr.c.
- Stop duplicating union pipe_index declaration. This depends on the
shared kbuild branch that brings in -fms-extensions support which
is merged into this branch.
- Use MD5 library instead of crypto_shash in ecryptfs.
- Use largest_zero_folio() in iomap_dio_zero().
- Replace simple_strtol/strtoul with kstrtoint/kstrtouint in init and
initrd code.
- Various typo fixes.
Fixes:
- Fix emergency sync for btrfs. Btrfs requires an explicit sync_fs()
call with wait == 1 to commit super blocks. The emergency sync path
never passed this, leaving btrfs data uncommitted during emergency
sync.
- Use local kmap in watch_queue's post_one_notification().
- Add hint prints in sb_set_blocksize() for LBS dependency on THP"
* tag 'vfs-6.19-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (35 commits)
MAINTAINERS: add German Maglione as virtiofs co-maintainer
fs: inline step_into() and walk_component()
fs: tidy up step_into() & friends before inlining
orangefs: use inode_update_timestamps directly
btrfs: fix the comment on btrfs_update_time
btrfs: use vfs_utimes to update file timestamps
fs: export vfs_utimes
fs: lift the FMODE_NOCMTIME check into file_update_time_flags
fs: refactor file timestamp update logic
include/linux/fs.h: trivial fix: regualr -> regular
fs/splice.c: trivial fix: pipes -> pipe's
fs: mark lookup_slow() as noinline
fs: add predicts based on nd->depth
fs: move mntput_no_expire() slowpath into a dedicated routine
fs: remove spurious exports in fs/file_attr.c
watch_queue: Use local kmap in post_one_notification()
fs: touch up predicts in path lookup
fs: move fd_install() slowpath into a dedicated routine and provide commentary
fs: hide dentry_cache behind runtime const machinery
fs: touch predicts in do_dentry_open()
...
|
|
um doesn't support KASAN_INLINE together with STATIC_LINK.
Instead of failing the build, disable KASAN_INLINE when
STATIC_LINK is selected.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511290451.x9GZVJ1l-lkp@intel.com/
Fixes: 1e338f4d99e6 ("kasan: introduce ARCH_DEFER_KASAN and unify static key across modes")
Signed-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/2620ab0bbba640b6237c50b9c0dca1c7d1142f5d.1764410067.git.chleroy@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
Remove stray spaces/tabs introduced with commit 56651128e2fb ("MIPS: Fix
idle VS timer enqueue") and add missing indentation for a branch delay
slot.
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
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The function opencodes for_each_set_bit() macro, which makes it bulky.
Using the proper API makes all the housekeeping code go away.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
|
Convert GPIO-connected buttons and LEDs on MTX1 board to software
nodes/properties, so that support for platform data can be removed
from gpio-keys driver (which will rely purely on generic device
properties for configuration).
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
|
Remove unnecessary __GFP_HIGHMEM masking, which was introduced with
commit 3e14fb19ad7c ("mips: convert various functions to use ptdescs").
GFP_KERNEL doesn't contain __GFP_HIGHMEM.
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
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Since commit e424054000878 ("MIPS: Tracing: Reduce the overhead of
dynamic Function Tracer"), the macro UASM_i_LA_mostly has been used,
and this macro can generate more than 2 instructions. At the same
time, the code in ftrace assumes that no more than 2 instructions can
be generated, which is why it stores them in an int[2] array. However,
as previously noted, the macro UASM_i_LA_mostly (and now UASM_i_LA)
causes a buffer overflow when _mcount is beyond 32 bits. This leads to
corruption of the variables located in the __read_mostly section.
This corruption was observed because the variable
__cpu_primary_thread_mask was corrupted, causing a hang very early
during boot.
This fix prevents the corruption by avoiding the generation of
instructions if they could exceed 2 instructions in
length. Fortunately, insn_la_mcount is only used if the instrumented
code is located outside the kernel code section, so dynamic ftrace can
still be used, albeit in a more limited scope. This is still
preferable to corrupting memory and/or crashing the kernel.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
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Commit 41528ba6afe6 ("MIPS: DTS: Only build subdir of current platform")
broke building of all DTBs when CONFIG_OF_ALL_DTBS is enabled unless all
the various kconfig options were also enabled. The only effect that commit
had was getting rid of some harmless build lines such as:
AR arch/mips/boot/dts/mti/built-in.a
Those lines were part of the built-in DTB support. Since commit
04e4ec98e405 ("MIPS: migrate to generic rule for built-in DTBs"), how the
built-in DTBs are handled has changed and those lines are no longer
generated, so revert to the prior behavior.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
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Update loongson1_defconfig to reflect recent Kconfig changes:
- Replace CONFIG_MTD_NAND_LOONGSON1 with CONFIG_MTD_NAND_LOONGSON,
since commit 7a1e3a452a57 ("mtd: rawnand: loongson1: Rename the
prefix from ls1x to loongson").
- Enable CONFIG_ETHTOOL_NETLINK, since commit 9ff2aa4206ef ("net:
ethtool: mm: extract stmmac verification logic into common library")
makes STMMAC_ETH depend on it.
In addition:
- Enable CONFIG_JUMP_LABEL to allow optimized static branch handling.
- Disable unnecessary options.
- Enable CONFIG_TEST_DHRY as a module.
Fixes: 7a1e3a452a57 ("mtd: rawnand: loongson1: Rename the prefix from ls1x to loongson")
Fixes: 9ff2aa4206ef ("net: ethtool: mm: extract stmmac verification logic into common library")
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
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With MIPS, it is possible to have SMP enabled without HOTPLUG_CPU
selected. However, in kernel/cpu.c, some code that uses
HOTPLUG_PARALLEL also requires HOTPLUG_CPU to be selected. Therefore,
we should fix the HOTPLUG_PARALLEL dependency to depend on
HOTPLUG_CPU, not just SMP.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202510270120.21wA1aX1-lkp@intel.com/
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
|
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* kvm-arm64/nv-xnx-haf: (22 commits)
: Support for FEAT_XNX and FEAT_HAF in nested
:
: Add support for a couple of MMU-related features that weren't
: implemented by KVM's software page table walk:
:
: - FEAT_XNX: Allows the hypervisor to describe execute permissions
: separately for EL0 and EL1
:
: - FEAT_HAF: Hardware update of the Access Flag, which in the context of
: nested means software walkers must also set the Access Flag.
:
: The series also adds some basic support for testing KVM's emulation of
: the AT instruction, including the implementation detail that AT sets the
: Access Flag in KVM.
KVM: arm64: at: Update AF on software walk only if VM has FEAT_HAFDBS
KVM: arm64: at: Use correct HA bit in TCR_EL2 when regime is EL2
KVM: arm64: Document KVM_PGTABLE_PROT_{UX,PX}
KVM: arm64: Fix spelling mistake "Unexpeced" -> "Unexpected"
KVM: arm64: Add break to default case in kvm_pgtable_stage2_pte_prot()
KVM: arm64: Add endian casting to kvm_swap_s[12]_desc()
KVM: arm64: Fix compilation when CONFIG_ARM64_USE_LSE_ATOMICS=n
KVM: arm64: selftests: Add test for AT emulation
KVM: arm64: nv: Expose hardware access flag management to NV guests
KVM: arm64: nv: Implement HW access flag management in stage-2 SW PTW
KVM: arm64: Implement HW access flag management in stage-1 SW PTW
KVM: arm64: Propagate PTW errors up to AT emulation
KVM: arm64: Add helper for swapping guest descriptor
KVM: arm64: nv: Use pgtable definitions in stage-2 walk
KVM: arm64: Handle endianness in read helper for emulated PTW
KVM: arm64: nv: Stop passing vCPU through void ptr in S2 PTW
KVM: arm64: Call helper for reading descriptors directly
KVM: arm64: nv: Advertise support for FEAT_XNX
KVM: arm64: Teach ptdump about FEAT_XNX permissions
KVM: arm64: nv: Forward FEAT_XNX permissions to the shadow stage-2
...
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
* kvm-arm64/vgic-lr-overflow: (50 commits)
: Support for VGIC LR overflows, courtesy of Marc Zyngier
:
: Address deficiencies in KVM's GIC emulation when a vCPU has more active
: IRQs than can be represented in the VGIC list registers. Sort the AP
: list to prioritize inactive and pending IRQs, potentially spilling
: active IRQs outside of the LRs.
:
: Handle deactivation of IRQs outside of the LRs for both EOImode=0/1,
: which involves special consideration for SPIs being deactivated from a
: different vCPU than the one that acked it.
KVM: arm64: Convert ICH_HCR_EL2_TDIR cap to EARLY_LOCAL_CPU_FEATURE
KVM: arm64: selftests: vgic_irq: Add timer deactivation test
KVM: arm64: selftests: vgic_irq: Add Group-0 enable test
KVM: arm64: selftests: vgic_irq: Add asymmetric SPI deaectivation test
KVM: arm64: selftests: vgic_irq: Perform EOImode==1 deactivation in ack order
KVM: arm64: selftests: vgic_irq: Remove LR-bound limitation
KVM: arm64: selftests: vgic_irq: Exclude timer-controlled interrupts
KVM: arm64: selftests: vgic_irq: Change configuration before enabling interrupt
KVM: arm64: selftests: vgic_irq: Fix GUEST_ASSERT_IAR_EMPTY() helper
KVM: arm64: selftests: gic_v3: Disable Group-0 interrupts by default
KVM: arm64: selftests: gic_v3: Add irq group setting helper
KVM: arm64: GICv2: Always trap GICV_DIR register
KVM: arm64: GICv2: Handle deactivation via GICV_DIR traps
KVM: arm64: GICv2: Handle LR overflow when EOImode==0
KVM: arm64: GICv3: Force exit to sync ICH_HCR_EL2.En
KVM: arm64: GICv3: nv: Plug L1 LR sync into deactivation primitive
KVM: arm64: GICv3: nv: Resync LRs/VMCR/HCR early for better MI emulation
KVM: arm64: GICv3: Avoid broadcast kick on CPUs lacking TDIR
KVM: arm64: GICv3: Handle in-LR deactivation when possible
KVM: arm64: GICv3: Add SPI tracking to handle asymmetric deactivation
...
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
* kvm-arm64/sea-user:
: Userspace handling of SEAs, courtesy of Jiaqi Yan
:
: Add support for processing external aborts in userspace in situations
: where the host has failed to do so, allowing the VMM to potentially
: reinject an external abort into the VM.
Documentation: kvm: new UAPI for handling SEA
KVM: selftests: Test for KVM_EXIT_ARM_SEA
KVM: arm64: VM exit to userspace to handle SEA
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
A guest can write 1 to TCR_ELx.HA, making the KVM software walker update
the access flag in a table descriptor even if FEAT_HAFDBS is not present.
Avoid this by making wi->ha depend on FEAT_HAFDBS being enabled in the VM,
similar to how the software walker treats FEAT_HPDS.
This is not needed for VTCR_EL2.HA, since a guest will always write to
the in-memory copy of the register, where the HA bit is masked (set to
0) by KVM if the VM doesn't have FEAT_HAFDBS.
Fixes: c59ca4b5b0c3 ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW")
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Link: https://msgid.link/20251128100946.74210-5-alexandru.elisei@arm.com
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
According to ARM DDI 0487L.b, the HA bit in TCR_EL2 when the translation
regime is EL2 (or !ELIsInHost(EL2)) is bit 21, not 39.
Fixes: c59ca4b5b0c3 ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW")
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Link: https://msgid.link/20251128100946.74210-3-alexandru.elisei@arm.com
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Commit 2608563b466b ("KVM: arm64: Add support for FEAT_XNX stage-2
permissions") added the KVM_PGTABLE_PROX_{UX,PX} permissions to stage 2 and
to EL2 translation regimes, but left them undocumented. Let's fix that.
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Link: https://msgid.link/20251128100946.74210-2-alexandru.elisei@arm.com
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Clang warns (or errors with CONFIG_WERROR=y / W=e):
arch/arm64/kvm/hyp/pgtable.c:757:2: error: label at end of compound statement is a C23 extension [-Werror,-Wc23-extensions]
757 | }
| ^
With older versions of clang (15 and older) and GCC (at least the minimum
supported, 8.1), this is an unconditional hard error:
arch/arm64/kvm/hyp/pgtable.c: In function 'kvm_pgtable_stage2_pte_prot':
arch/arm64/kvm/hyp/pgtable.c:756:2: error: label at end of compound statement
default:
^~~~~~~
arch/arm64/kvm/hyp/pgtable.c:756:10: error: label at end of compound statement: expected statement
default:
^
;
Add a break statement to this default case to clear up the error/warning.
Fixes: 2608563b466b ("KVM: arm64: Add support for FEAT_XNX stage-2 permissions")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251125-arm64-kvm-hyp-pgtable-fix-c23-ext-warn-v1-1-98b506ddefbf@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Keep sparse quiet by explicitly casting endianness conversion
when swapping S1 and S2 descriptors.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511260246.JQDGsQKa-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202511260344.9XehvH5Q-lkp@intel.com/
Fixes: c59ca4b5b0c3f ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW")
Fixes: 39db933ba67f8 ("KVM: arm64: nv: Implement HW access flag management in stage-2 SW PTW")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251125204848.1136383-1-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
__lse_swap_desc() is compiled unconditionally, even if LSE is disabled
using the config option. Align with the spirit of the config option and
fix some build errors due to __LSE_PREAMBLE being undefined with the
application of some ifdeffery.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511250700.kAutzJFm-lkp@intel.com/
Link: https://msgid.link/20251124235409.1731253-1-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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Everything is in place to update the access flag at S1 and S2. Expose
support for the access flag flavor of FEAT_HAFDBS to NV guests.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-15-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
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Give the stage-2 walk similar treatment to stage-1: update the access
flag during the table walk and do so for any walk context.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-14-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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Atomically update the Access flag at stage-1 when the guest has
configured the MMU to do so. Make the implementation choice (and liberal
interpretation of speculation) that any access type updates the Access
flag, including AT and CMO instructions.
Restart the entire walk by returning to the exception-generating
instruction in the case of a failed Access flag update.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-13-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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KVM's software PTW will soon support 'hardware' updates to the access
flag. Similar to fault handling, races to update the descriptor will be
handled by restarting the instruction. Prepare for this by propagating
errors up to the AT emulation, only retiring the instruction if the walk
succeeds.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-12-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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Implementing FEAT_HAFDBS in KVM's software PTWs requires the ability to
CAS a descriptor to update the in-memory value. Add an accessor to do
exactly that, coping with the fact that guest descriptors are in user
memory (duh).
While FEAT_LSE required on any system that implements NV, KVM now uses
the stage-1 PTW for non-nested use cases meaning an LL/SC implementation
is necessary as well.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-11-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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|
Use the existing page table definitions instead of magic numbers for the
stage-2 table walk.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-10-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Implementing FEAT_HAFDBS means adding another descriptor accessor that
needs to deal with the guest-configured endianness. Prepare by moving
the endianness handling into the read accessor and out of the main body
of the S1/S2 PTWs.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-9-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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|
The stage-2 table walker passes down the vCPU as a void pointer. That
might've made sense if the walker was generic although at this point it
is clear this will only ever be used in the context of a vCPU.
Suggested-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-8-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Going through a function pointer doesn't serve much purpose when there's
only one implementation.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-7-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Everything is in place to support FEAT_XNX, advertise support.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-6-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
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Although KVM doesn't make direct use of the feature, guest hypervisors
can use FEAT_XNX which influences the permissions of the shadow stage-2.
Update ptdump to separately print the privileged and unprivileged
execute permissions.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251124190158.177318-5-oupton@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fix from Thomas Bogendoerfer:
"Fix TLB unification for cores with more than 64 TLB entries"
* tag 'mips-fixes_6.18_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: mm: kmalloc tlb_vpn array to avoid stack overflow
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Owing to Config4.MMUSizeExt and VTLB/FTLB MMU features later MIPSr2+
cores can have more than 64 TLB entries. Therefore allocate an array
for uniquification instead of placing too an small array on the stack.
Fixes: 35ad7e181541 ("MIPS: mm: tlb-r4k: Uniquify TLB entries on init")
Co-developed-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Cc: stable@vger.kernel.org # v6.17+: 9f048fa48740: MIPS: mm: Prevent a TLB shutdown on initial uniquification
Cc: stable@vger.kernel.org # v6.17+
Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Tested-by: Klara Modin <klarasmodin@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Remove trailing whitespace on empty lines.
No functional changes.
[ bp: Massage commit message. ]
Signed-off-by: Harry Fellowes <harryfellowes1@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20250825192832.6444-3-harryfellowes1@gmail.com
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"A few last minute fixes came in this week:
- interrupt and gpio numbers in foud separate i.MX8 specific
devicetree files were wrong
- The vector length property in the C906 CPU description used the
wrong unit
- Two bugs with uninitialized stack variables in the tee subsystem
- Alexander Stein now maintains additional devicetree files"
* tag 'soc-fixes-6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
riscv: dts: allwinner: d1: fix vlenb property
MAINTAINERS: Add entry for TQ-Systems AM335 device trees
tee: qcomtee: initialize result before use in release worker
arm64: dts: imx8qm-mek: fix mux-controller select/enable-gpios polarity
tee: qcomtee: fix uninitialized pointers with free attribute
ARM: dts: nxp: imx6ul: correct SAI3 interrupt line
arm64: dts: imx8dxl-ss-conn: swap interrupts number of eqos
arm64: dts: imx8dxl: Correct pcie-ep interrupt number
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https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/fixes
Allwinner fixes for 6.18
Just one fix to correct the "thead,vlenb" property for the RISC-V based
D1 SoC family.
* tag 'sunxi-fixes-for-6.18' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
riscv: dts: allwinner: d1: fix vlenb property
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* for-next/set_memory:
: Fix + documentation for the arm64 change_memory_common()
arm64/mm: Document why linear map split failure upon vm_reset_perms is not problematic
arm64/pageattr: Propagate return value from __change_memory_common
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* for-next/sysreg:
: arm64 sysreg updates/cleanups
arm64/sysreg: Remove unused define ARM64_FEATURE_FIELD_BITS
KVM: arm64: selftests: Consider all 7 possible levels of cache
KVM: arm64: selftests: Remove ARM64_FEATURE_FIELD_BITS and its last user
arm64/sysreg: Add ICH_VMCR_EL2
arm64/sysreg: Move generation of RES0/RES1/UNKN to function
arm64/sysreg: Support feature-specific fields with 'Prefix' descriptor
arm64/sysreg: Fix checks for incomplete sysreg definitions
arm64/sysreg: Replace TCR_EL1 field macros
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'for-next/efi-preempt', 'for-next/assembler-macro', 'for-next/typos', 'for-next/sme-ptrace-disable', 'for-next/local-tlbi-page-reused', 'for-next/mpam', 'for-next/acpi' and 'for-next/documentation', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf:
perf: arm_spe: Add support for filtering on data source
perf: Add perf_event_attr::config4
perf/imx_ddr: Add support for PMU in DB (system interconnects)
perf/imx_ddr: Get and enable optional clks
perf/imx_ddr: Move ida_alloc() from ddr_perf_init() to ddr_perf_probe()
dt-bindings: perf: fsl-imx-ddr: Add compatible string for i.MX8QM, i.MX8QXP and i.MX8DXL
arch_topology: Provide a stub topology_core_has_smt() for !CONFIG_GENERIC_ARCH_TOPOLOGY
perf/arm-ni: Fix and optimise register offset calculation
perf: arm_pmuv3: Add new Cortex and C1 CPU PMUs
perf: arm_cspmu: fix error handling in arm_cspmu_impl_unregister()
perf/arm-ni: Add NoC S3 support
perf/arm_cspmu: nvidia: Add pmevfiltr2 support
perf/arm_cspmu: nvidia: Add revision id matching
perf/arm_cspmu: Add pmpidr support
perf/arm_cspmu: Add callback to reset filter config
perf: arm_pmuv3: Don't use PMCCNTR_EL0 on SMT cores
* for-next/misc:
: Miscellaneous patches
arm64: atomics: lse: Remove unused parameters from ATOMIC_FETCH_OP_AND macros
arm64: remove duplicate ARCH_HAS_MEM_ENCRYPT
arm64: mm: use untagged address to calculate page index
arm64: mm: make linear mapping permission update more robust for patial range
arm64/mm: Elide TLB flush in certain pte protection transitions
arm64/mm: Rename try_pgd_pgtable_alloc_init_mm
arm64/mm: Allow __create_pgd_mapping() to propagate pgtable_alloc() errors
arm64: add unlikely hint to MTE async fault check in el0_svc_common
arm64: acpi: add newline to deferred APEI warning
arm64: entry: Clean out some indirection
arm64/mm: Ensure PGD_SIZE is aligned to 64 bytes when PA_BITS = 52
arm64/mm: Drop cpu_set_[default|idmap]_tcr_t0sz()
arm64: remove unused ARCH_PFN_OFFSET
arm64: use SOFTIRQ_ON_OWN_STACK for enabling softirq stack
arm64: Remove assertion on CONFIG_VMAP_STACK
* for-next/kselftest:
: arm64 kselftest patches
kselftest/arm64: Align zt-test register dumps
* for-next/efi-preempt:
: arm64: Make EFI calls preemptible
arm64/efi: Call EFI runtime services without disabling preemption
arm64/efi: Move uaccess en/disable out of efi_set_pgd()
arm64/efi: Drop efi_rt_lock spinlock from EFI arch wrapper
arm64/fpsimd: Permit kernel mode NEON with IRQs off
arm64/fpsimd: Don't warn when EFI execution context is preemptible
efi/runtime-wrappers: Keep track of the efi_runtime_lock owner
efi: Add missing static initializer for efi_mm::cpus_allowed_lock
* for-next/assembler-macro:
: arm64: Replace __ASSEMBLY__ with __ASSEMBLER__ in headers
arm64: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers
arm64: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers
* for-next/typos:
: Random typo/spelling fixes
arm64: Fix double word in comments
arm64: Fix typos and spelling errors in comments
* for-next/sme-ptrace-disable:
: Support disabling streaming mode via ptrace on SME only systems
kselftest/arm64: Cover disabling streaming mode without SVE in fp-ptrace
kselftst/arm64: Test NT_ARM_SVE FPSIMD format writes on non-SVE systems
arm64/sme: Support disabling streaming mode via ptrace on SME only systems
* for-next/local-tlbi-page-reused:
: arm64, mm: avoid TLBI broadcast if page reused in write fault
arm64, tlbflush: don't TLBI broadcast if page reused in write fault
mm: add spurious fault fixing support for huge pmd
* for-next/mpam: (34 commits)
: Basic Arm MPAM driver (more to follow)
MAINTAINERS: new entry for MPAM Driver
arm_mpam: Add kunit tests for props_mismatch()
arm_mpam: Add kunit test for bitmap reset
arm_mpam: Add helper to reset saved mbwu state
arm_mpam: Use long MBWU counters if supported
arm_mpam: Probe for long/lwd mbwu counters
arm_mpam: Consider overflow in bandwidth counter state
arm_mpam: Track bandwidth counter state for power management
arm_mpam: Add mpam_msmon_read() to read monitor value
arm_mpam: Add helpers to allocate monitors
arm_mpam: Probe and reset the rest of the features
arm_mpam: Allow configuration to be applied and restored during cpu online
arm_mpam: Use a static key to indicate when mpam is enabled
arm_mpam: Register and enable IRQs
arm_mpam: Extend reset logic to allow devices to be reset any time
arm_mpam: Add a helper to touch an MSC from any CPU
arm_mpam: Reset MSC controls from cpuhp callbacks
arm_mpam: Merge supported features during mpam_enable() into mpam_class
arm_mpam: Probe the hardware features resctrl supports
arm_mpam: Add helpers for managing the locking around the mon_sel registers
...
* for-next/acpi:
: arm64 acpi updates
ACPI: GTDT: Get rid of acpi_arch_timer_mem_init()
* for-next/documentation:
: arm64 Documentation updates
Documentation/arm64: Fix the typo of register names
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problematic
Consider the following code path:
(1) vmalloc -> (2) set_vm_flush_reset_perms -> (3) set_memory_ro/set_memory_rox
-> .... (4) use the mapping .... -> (5) vfree -> (6) vm_reset_perms
-> (7) set_area_direct_map.
Or, it may happen that we encounter failure at (3) and directly jump to (5).
In both cases, (7) may fail due to linear map split failure. But, we care
about its success *only* for the region which got successfully changed by
(3). Such a region is guaranteed to be pte-mapped.
The TLDR is that (7) will surely succeed for the regions we care about.
Signed-off-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The rodata=on security measure requires that any code path which does
vmalloc -> set_memory_ro/set_memory_rox must protect the linear map alias
too. Therefore, if such a call fails, we must abort set_memory_* and caller
must take appropriate action; currently we are suppressing the error, and
there is a real chance of such an error arising post commit a166563e7ec3
("arm64: mm: support large block mapping when rodata=full"). Therefore,
propagate any error to the caller.
Fixes: a166563e7ec3 ("arm64: mm: support large block mapping when rodata=full")
Signed-off-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-36-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-35-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-34-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Fixes a UAF for src_info as well.
Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-33-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-32-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Switch to using the generic infrastructure to check for and handle pending
work before transitioning into guest mode.
xfer_to_guest_mode_handle_work() does a few more things than the current
code does when deciding whether or not to exit the __vcpu_run() loop. The
exittime tests from kvm-unit-tests, in my tests, were within a few percent
compared to before this series, which is within noise tolerance.
Co-developed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
[frankja@linux.ibm.com: Removed semicolon]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
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'nvidia/tegra', 'intel/vt-d', 'amd/amd-vi' and 'core' into next
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Add the missing forward declarations and includes so it does not have
implicit dependencies. mem_encrypt.h is a public header imported by
drivers. Users should not have to guess what include files are needed.
Resolves a kbuild splat:
In file included from drivers/iommu/generic_pt/fmt/iommu_amdv1.c:15:
In file included from drivers/iommu/generic_pt/fmt/iommu_template.h:36:
In file included from drivers/iommu/generic_pt/fmt/amdv1.h:23:
In file included from include/linux/mem_encrypt.h:17:
>> arch/powerpc/include/asm/mem_encrypt.h:13:49: warning: declaration of 'struct device' will not be visible outside of this function [-Wvisibility]
13 | static inline bool force_dma_unencrypted(struct device *dev)
Fixes: 879ced2bab1b ("iommupt: Add the AMD IOMMU v1 page table format")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511161358.rS5pSb3U-lkp@intel.com/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Introduce a generic infrastructure for tracking recoverable hardware
errors (HW errors that are visible to the OS but does not cause a panic)
and record them for vmcore consumption. This aids post-mortem crash
analysis tools by preserving a count and timestamp for the last occurrence
of such errors. On the other side, correctable errors, which the OS
typically remains unaware of because the underlying hardware handles them
transparently, are less relevant for crash dump and therefore are NOT
tracked in this infrastructure.
Add centralized logging for sources of recoverable hardware errors based
on the subsystem it has been notified.
hwerror_data is write-only at kernel runtime, and it is meant to be read
from vmcore using tools like crash/drgn. For example, this is how it
looks like when opening the crashdump from drgn.
>>> prog['hwerror_data']
(struct hwerror_info[1]){
{
.count = (int)844,
.timestamp = (time64_t)1752852018,
},
...
This helps fleet operators quickly triage whether a crash may be
influenced by hardware recoverable errors (which executes a uncommon code
path in the kernel), especially when recoverable errors occurred shortly
before a panic, such as the bug fixed by commit ee62ce7a1d90 ("page_pool:
Track DMA-mapped pages and unmap them when destroying the pool")
This is not intended to replace full hardware diagnostics but provides a
fast way to correlate hardware events with kernel panics quickly.
Rare machine check exceptions—like those indicated by mce_flags.p5 or
mce_flags.winchip—are not accounted for in this method, as they fall
outside the intended usage scope for this feature's user base.
[leitao@debian.org: add hw-recoverable-errors to toctree]
Link: https://lkml.kernel.org/r/20251127-vmcoreinfo_fix-v1-1-26f5b1c43da9@debian.org
Link: https://lkml.kernel.org/r/20251010-vmcore_hw_error-v5-1-636ede3efe44@debian.org
Signed-off-by: Breno Leitao <leitao@debian.org>
Suggested-by: Tony Luck <tony.luck@intel.com>
Suggested-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com> [APEI]
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Bob Moore <robert.moore@intel.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Morse <james.morse@arm.com>
Cc: Konrad Rzessutek Wilk <konrad.wilk@oracle.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: "Oliver O'Halloran" <oohall@gmail.com>
Cc: Omar Sandoval <osandov@osandov.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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to merge "kho: make debugfs interface optional" into mm-nonmm-stable.
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https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/defconfig
RISC-V config for v6.19
Spacemit:
The Spacemit k1 wants the freescale qspi driver enabled as a module
as they appear to be rather similar IPs.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'riscv-config-for-v6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
riscv: defconfig: enable SPI_FSL_QUADSPI as a module
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/drivers-late
standalone cache drivers for v6.19
ccache:
Add a compatible for the pic64gx SoC. No driver change needed, as it
falls back to the PolarFire SoC.
hisi hha/generic cpu cache maintenance:
Add support for a non-architectural mechanism for invalidating memory
regions, needed for some cxl implementations on arm64 (and probably
elsewhere in the future). The HiSilicon Hydra Home Agent is the first
driver to provide this support.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'cache-for-v6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
MAINTAINERS: refer to intended file in STANDALONE CACHE CONTROLLER DRIVERS
cache: Support cache maintenance for HiSilicon SoC Hydra Home Agent
cache: Make top level Kconfig menu a boolean dependent on RISCV
MAINTAINERS: Add Jonathan Cameron to drivers/cache and add lib/cache_maint.c + header
arm64: Select GENERIC_CPU_CACHE_MAINTENANCE
lib: Support ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION
memregion: Support fine grained invalidate by cpu_cache_invalidate_memregion()
memregion: Drop unused IORES_DESC_* parameter from cpu_cache_invalidate_memregion()
dt-bindings: cache: sifive,ccache0: add a pic64gx compatible
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/dt
RISC-V Devicetrees for v6.19
MAINTAINERS:
There's some re-jigging of things to reduce duplication, by moving me
into the StarFive entry and my tree into the Microchip one. The
other platforms that I look after (SiFive and Canaan) are marked as Odd
Fixes to better represent their status. Nothing functionally changes.
Microchip:
Add adc and mmc nodes for the Beagle-V Fire.
SiFive:
Add pwm fans to the unmatched board.
StarFive:
Add the Orange PI RV board, another VisionFive 2 derived SBC. This
required moving a mmc related nodes out of the common file, into
<board>.dts. Yet more things moved out of the common file when the
VisionFive 2 Lite boards were added, which use the JH7110S SoC instead of
the JH7110. The difference here between SoCs is just temperature and
frequency ranges, but the boards differ enough that the pool of common
nodes decreases a little further. There's an eMMC and an SD variant
here, that are different SKUs, bringing the total new StarFive boards to
three.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'riscv-dt-for-v6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
riscv: dts: starfive: add Orange Pi RV
dt-bindings: riscv: starfive: add xunlong,orangepi-rv
riscv: dts: starfive: Add VisionFive 2 Lite eMMC board device tree
riscv: dts: starfive: Add VisionFive 2 Lite board device tree
riscv: dts: starfive: Add common board dtsi for VisionFive 2 Lite variants
riscv: dts: starfive: jh7110-common: Move out some nodes to the board dts
dt-bindings: riscv: Add StarFive JH7110S SoC and VisionFive 2 Lite board
MAINTAINERS: degrade RISC-V MISC SOC SUPPORT to Odd Fixes
MAINTAINERS: add tree to RISC-V Microchip entry
MAINTAINERS: remove patchwork from RISC-V MISC SOC SUPPORT
MAINTAINERS: add Conor to StarFive entry
riscv: dts: sifive: unmatched: Add PWM controlled fans
riscv: dts: microchip: enable qspi adc/mmc-spi-slot on BeagleV Fire
dts: starfive: jh7110-common: split out mmc0 reset pins from common into boards
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The base address of JPEG decoder core 1 should start at 0x10000, and
have a size of 0x10000, i.e. it is right after core 0.
Instead the core has the same base address as core 0, and with a crazy
large size. This looks like a mixup of address and size cells when the
ranges were converted.
This causes the kernel to fail to register the second core due to sysfs
name conflicts:
sysfs: cannot create duplicate filename '/devices/platform/soc/soc:jpeg-decoder@1a040000/1a040000.jpgdec'
Fix up the address range.
Fixes: a9eac43d039f ("arm64: dts: mediatek: mt8195: Fix ranges for jpeg enc/decoder nodes")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20251127100044.612825-1-wenst@chromium.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/dt
Amlogic ARM64 DT Changes for v6.19:
- Fix the PCIe DBI memory region name
- Add ISP nodes for Amlogic C3
- Add power controller nodes for Amlogic S6/S7/S7D
- Add Pinctrl node for Amlogic A4
- Add AO Secure node for Amlogic S6/S7/S7D
- Add GPIO Interrupt node for Amlogic S6/S7/S7D
- Fix S922X cache layout
- New Boards:
- Tanix TX9 Pro
* tag 'amlogic-arm64-dt-for-v6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
arm64: dts: amlogic: meson-g12b: Fix L2 cache reference for S922X CPUs
arm64: dts: Add gpio_intc node for Amlogic S7D SoCs
arm64: dts: Add gpio_intc node for Amlogic S7 SoCs
arm64: dts: Add gpio_intc node for Amlogic S6 SoCs
arm64: dts: amlogic: s7d: add ao secure node
arm64: dts: amlogic: s7: add ao secure node
arm64: dts: amlogic: s6: add ao secure node
arm64: dts: amlogic: Fix the register name of the 'DBI' region
dts: arm64: amlogic: add a5 pinctrl node
arm64: dts: amlogic: s7d: add power domain controller node
arm64: dts: amlogic: s7: add power domain controller node
arm64: dts: amlogic: s6: add power domain controller node
dts: arm64: amlogic: Add ISP related nodes for C3
arm64: dts: meson: add initial device-tree for Tanix TX9 Pro
dt-bindings: arm: amlogic: add support for Tanix TX9 Pro
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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|
Conflicts:
net/xdp/xsk.c
0ebc27a4c67d ("xsk: avoid data corruption on cq descriptor number")
8da7bea7db69 ("xsk: add indirect call for xsk_destruct_skb")
30ed05adca4a ("xsk: use a smaller new lock for shared pool case")
https://lore.kernel.org/20251127105450.4a1665ec@canb.auug.org.au
https://lore.kernel.org/eb4eee14-7e24-4d1b-b312-e9ea738fefee@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The define ARM64_FEATURE_FIELD_BITS is now unused and feature id
fields don't always have 4 bits. Remove it.
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
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The ATOMIC_FETCH_OP_AND and ATOMIC64_FETCH_OP_AND macros accept 'mb' and
'cl' parameters but never use them in their implementation. These macros
simply delegate to the corresponding andnot functions, which handle the
actual atomic operations and memory barriers.
Signed-off-by: Seongsu Park <sgsu.park@samsung.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
|
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suspend
Commit 8c3170628a9c ("wifi: brcmfmac: keep power during suspend if board
requires it") changed default behavior of the BRCMFMAC driver, which now
keeps SDIO card powered during system suspend to enable optional support
for WOWL. This feature is not supported by the legacy Exynos4 based
boards and leads to WLAN disfunction after system suspend/resume cycle.
Fix this by annotating SDIO host used by WLAN chip with
'cap-power-off-card' property, which should have been there from the
beginning.
Fixes: f77cbb9a3e5d ("ARM: dts: exynos: Add bcm4334 device node to Trats2")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patch.msgid.link/20251126102618.3103517-5-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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|
suspend
Commit 8c3170628a9c ("wifi: brcmfmac: keep power during suspend if board
requires it") changed default behavior of the BRCMFMAC driver, which now
keeps SDIO card powered during system suspend to enable optional support
for WOWL. This feature is not supported by the legacy Exynos4 based
boards and leads to WLAN disfunction after system suspend/resume cycle.
Fix this by annotating SDIO host used by WLAN chip with
'cap-power-off-card' property, which should have been there from the
beginning.
Fixes: a19f6efc01df ("ARM: dts: exynos: Enable WLAN support for the Trats board")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patch.msgid.link/20251126102618.3103517-4-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
|
|
suspend
Commit 8c3170628a9c ("wifi: brcmfmac: keep power during suspend if board
requires it") changed default behavior of the BRCMFMAC driver, which now
keeps SDIO card powered during system suspend to enable optional support
for WOWL. This feature is not supported by the legacy Exynos4 based
boards and leads to WLAN disfunction after system suspend/resume cycle.
Fix this by annotating SDIO host used by WLAN chip with
'cap-power-off-card' property, which should have been there from the
beginning.
Fixes: 8620cc2f99b7 ("ARM: dts: exynos: Add devicetree file for the Galaxy S2")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patch.msgid.link/20251126102618.3103517-3-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
|
|
Commit 8c3170628a9c ("wifi: brcmfmac: keep power during suspend if board
requires it") changed default behavior of the BRCMFMAC driver, which now
keeps SDIO card powered during system suspend to enable optional support
for WOWL. This feature is not supported by the legacy Exynos4 based
boards and leads to WLAN disfunction after system suspend/resume cycle.
Fix this by annotating SDIO host used by WLAN chip with
'cap-power-off-card' property, which should have been there from the
beginning.
Fixes: f1b0ffaa686f ("ARM: dts: exynos: Enable WLAN support for the UniversalC210 board")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patch.msgid.link/20251126102618.3103517-2-m.szyprowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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|
All consoles found on for_each_console are registered, meaning that all
of them have the CON_ENABLED flag set. Since NBCON was introduced it's
important to check if a given console also implements the NBCON callbacks.
The function console_is_usable does exactly that.
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20251121-printk-cleanup-part2-v2-2-57b8b78647f4@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
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|
Move enabling and disabling of interrupts around the SIE instruction to
entry code. Enabling interrupts only after the __TI_sie flag has been set
guarantees that the SIE instruction is not executed if an interrupt happens
between enabling interrupts and the execution of the SIE instruction.
Interrupt handlers and machine check handler forward the PSW to the
sie_exit label in such cases.
This is a prerequisite for VIRT_XFER_TO_GUEST_WORK to prevent that guest
context is entered when e.g. a scheduler IPI, indicating that a reschedule
is required, happens right before the SIE instruction, which could lead to
long delays.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
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Add a signal_exits counter for s390, as exists on arm64, loongarch, mips,
powerpc, riscv and x86.
This is used by kvm_handle_signal_exit(), which we will use when we
later enable CONFIG_VIRT_XFER_TO_GUEST_WORK.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
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This code doesn't run. Since 2008:
4f9c11dd49fb ("x86, 64-bit: adjust mapping of physical pagetables to work with Xen")
the kernel has gained more flexible logging and tracing capabilities;
presumably if anyone wanted to take advantage of this log message they would
have got rid of the "if (0)" so they could use these capabilities.
Since they haven't, just delete it.
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20251003-x86-init-cleanup-v1-1-f2b7994c2ad6@google.com
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|
Linus figured less #ifdef is more better and making x86-32 use
GENERIC_BUG_RELATIVE_POINTERS removes one layer of macro magic from
the bug.h bits.
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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Encoding a relative NULL pointer doesn't work for KASLR, when the
whole kernel image gets shifted, the __bug_table and the target string
get shifted by the same amount and the relative offset is preserved.
However when the target is an absolute 0 value and the __bug_table
gets moved about, the end result in a pointer equivalent to
kaslr_offset(), not NULL.
Notably, this will generate SHN_UNDEF relocations, and Ard would
really like to not have those at all.
Use the empty string to denote no-string.
Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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With in-kernel emulated eiointc driver, hardware register can be
accessed by different size, there is reg_u8/reg_u16/reg_u32/reg_u64
union type with EIOINTC register.
Here use 64-bit type with register definition and remove union type
since most registers are accessed with 64-bit method. And this makes
EIOINTC emulated driver simpler.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Check whether the host CPU supported AVEC, and save/restore CSR_MSGIS0-
CSR_MSGIS3 when necessary.
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
|
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Now VM PMU capability comes from host PMU capability directly, instead
bit 23 of HW GCFG CSR register also show PMU capability for VM. It will
be better if it comes from HW GCFG CSR register rather than just host
PMU capability, especially when LVZ feature is emulated in TCG mode, in
which case without PMU capability.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add loongson,ls2k*-uart compatible string on uarts.
Co-developed-by: Haowei Zheng <zhenghaowei@loongson.cn>
Signed-off-by: Haowei Zheng <zhenghaowei@loongson.cn>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/8e0c08459fa5bddefd898648fea28a9f2fde701a.1760166651.git.zhoubinbin@loongson.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use the lay instruction instead of aghik. aghik is only available since
z196, therefore compiling the kernel for z10 results in this error:
arch/s390/kernel/entry.S: Assembler messages:
arch/s390/kernel/entry.S:165: Error: Unrecognized opcode: `aghik'
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511261518.nBbQN5h7-lkp@intel.com/
Fixes: f5730d44e05e ("s390: Add stackprotector support")
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
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KVM SVM changes for 6.19:
- Fix a few missing "VMCB dirty" bugs.
- Fix the worst of KVM's lack of EFER.LMSLE emulation.
- Add AVIC support for addressing 4k vCPUs in x2AVIC mode.
- Fix incorrect handling of selective CR0 writes when checking intercepts
during emulation of L2 instructions.
- Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32] on
VMRUN and #VMEXIT.
- Fix a bug where KVM corrupt the guest code stream when re-injecting a soft
interrupt if the guest patched the underlying code after the VM-Exit, e.g.
when Linux patches code with a temporary INT3.
- Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits to
userspace, and extend KVM "support" to all policy bits that don't require
any actual support from KVM.
|
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KVM VMX changes for 6.19:
- Use the root role from kvm_mmu_page to construct EPTPs instead of the
current vCPU state, partly as worthwhile cleanup, but mostly to pave the
way for tracking per-root TLB flushes so that KVM can elide EPT flushes on
pCPU migration if KVM has flushed the root at least once.
- Add a few missing nested consistency checks.
- Rip out support for doing "early" consistency checks via hardware as the
functionality hasn't been used in years and is no longer useful in general,
and replace it with an off-by-default module param to detected missed
consistency checks (i.e. WARN if hardware finds a check that KVM does not).
- Fix a currently-benign bug where KVM would drop the guest's SPEC_CTRL[63:32]
on VM-Enter.
- Misc cleanups.
|
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KVM TDX changes for 6.19:
- Overhaul the TDX code to address systemic races where KVM (acting on behalf
of userspace) could inadvertantly trigger lock contention in the TDX-Module,
which KVM was either working around in weird, ugly ways, or was simply
oblivious to (as proven by Yan tripping several KVM_BUG_ON()s with clever
selftests).
- Fix a bug where KVM could corrupt a vCPU's cpu_list when freeing a vCPU if
creating said vCPU failed partway through.
- Fix a few sparse warnings (bad annotation, 0 != NULL).
- Use struct_size() to simplify copying capabilities to userspace.
|
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KVM x86 MMU changes for 6.19:
- Skip the costly "zap all SPTEs" on an MMIO generation wrap if MMIO SPTE
caching is disabled, as there can't be any relevant SPTEs to zap.
- Relocate a misplace export.
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The original addition of cache information for the Amlogic S922X SoC
used the wrong next-level cache node for CPU cores 100 and 101,
incorrectly referencing `l2_cache_l`. These cores actually belong to
the big cluster and should reference `l2_cache_b`. Update the device
tree accordingly.
Fixes: e7f85e6c155a ("arm64: dts: amlogic: Add cache information to the Amlogic S922X SoC")
Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251123-fixkhadas-v1-1-045348f0a4c2@baylibre.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
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Add GPIO interrupt controller device.
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251105-irqchip-gpio-s6-s7-s7d-v1-5-b4d1fe4781c1@amlogic.com
[narmstrong: fixed applying on top as secure node]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
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Add GPIO interrupt controller device.
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251105-irqchip-gpio-s6-s7-s7d-v1-4-b4d1fe4781c1@amlogic.com
[narmstrong: fixed applying on top of ao secure node]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
|
Add GPIO interrupt controller device.
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251105-irqchip-gpio-s6-s7-s7d-v1-3-b4d1fe4781c1@amlogic.com
[narmstrong: fixed applying on top of ao secure node]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Add node for board info registers, which allows getting SoC family and
board revision.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20251119-soc-info-s6-s7-s7d-v3-5-1764c1995c04@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
|
Add node for board info registers, which allows getting SoC family and
board revision.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20251119-soc-info-s6-s7-s7d-v3-4-1764c1995c04@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
|
Add node for board info registers, which allows getting SoC family and
board revision.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20251119-soc-info-s6-s7-s7d-v3-3-1764c1995c04@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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DT incorrectly specifies the 'DBI' region as 'ELBI'. DBI is a must have
region for DWC controllers as it has the Root Port and controller specific
registers, while ELBI has optional registers.
Hence, fix the DT for both Meson platforms.
Cc: stable+noautosel@kernel.org # Driver dependency
Fixes: 5b3a9c20926e ("arm64: dts: meson-axg: add PCIe nodes")
Fixes: 1f8607d59763 ("arm64: dts: meson-g12a: Add PCIe node")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251101-pci-meson-fix-v1-2-c50dcc56ed6a@oss.qualcomm.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Add pinctrl device to support Amlogic A5.
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20251022-a5-pinctrl-node-v4-1-a71911852c4b@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Add power domain controller node for Amlogic S7D SoC.
Signed-off-by: hongyu.chen1 <hongyu.chen1@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250822-pm-s6-s7-s7d-v1-5-82e3f3aff327@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
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Add power domain controller node for Amlogic S7 SoC.
Signed-off-by: hongyu.chen1 <hongyu.chen1@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250822-pm-s6-s7-s7d-v1-4-82e3f3aff327@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
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Add power domain controller node for Amlogic S6 SoC.
Signed-off-by: hongyu.chen1 <hongyu.chen1@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250822-pm-s6-s7-s7d-v1-3-82e3f3aff327@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
|
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Add the IMX290 sensor node description to the device tree file,
which will be controlled via I2C bus with image data transmission
through MIPI CSI-2 interface.
Add CSI-2, adapter and ISP nodes for C3 family.
Signed-off-by: Keke Li <keke.li@amlogic.com>
Link: https://patch.msgid.link/20250918-b4-c3isp-v1-1-5f48db6516c9@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Oranth Tanix TX9 Pro is based on the Amlogic Q200 reference design with
an S912 chip and the following specs:
- 3GB DDR3 RAM
- 32GB eMMC
- 10/100/1000 Base-T Ethernet
- AP6356 Wireless (802.11 b/g/n/ac, BT 5.0)
- HDMI 2.0a video
- VFD for clock/status
- 2x USB 2.0 ports
- IR receiver
- 1x Power LED (white)
- 1x Update/Reset button (underside)
- 1x micro SD card slot
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20250927125006.824293-2-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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|
KVM x86 misc changes for 6.19:
- Fix an async #PF bug where KVM would clear the completion queue when the
guest transitioned in and out of paging mode, e.g. when handling an SMI and
then returning to paged mode via RSM.
- Fix a bug where TDX would effectively corrupt user-return MSR values if the
TDX Module rejects VP.ENTER and thus doesn't clobber host MSRs as expected.
- Leave the user-return notifier used to restore MSRs registered when
disabling virtualization, and instead pin kvm.ko. Restoring host MSRs via
IPI callback is either pointless (clean reboot) or dangerous (forced reboot)
since KVM has no idea what code it's interrupting.
- Use the checked version of {get,put}_user(), as Linus wants to kill them
off, and they're measurably faster on modern CPUs due to the unchecked
versions containing an LFENCE.
- Fix a long-lurking bug where KVM's lack of catch-up logic for periodic APIC
timers can result in a hard lockup in the host.
- Revert the periodic kvmclock sync logic now that KVM doesn't use a
clocksource that's subject to NPT corrections.
- Clean up KVM's handling of MMIO Stale Data and L1TF, and bury the latter
behind CONFIG_CPU_MITIGATIONS.
- Context switch XCR0, XSS, and PKRU outside of the entry/exit fastpath as
the only reason they were handled in the faspath was to paper of a bug in
the core #MC code that has long since been fixed.
- Add emulator support for AVX MOV instructions to play nice with emulated
devices whose PCI BARs guest drivers like to access with large multi-byte
instructions.
|
|
Suzuki notices that making the ICH_HCR_EL2_TDIR capability a system
one isn't a very good idea, should we end-up with CPUs that have
asymmetric TDIR support (somehow unlikely, but you never know what
level of stupidity vendors are up to). For this hypothetical setup,
making this an "EARLY_LOCAL_CPU_FEATURE" is a much better option.
This is actually consistent with what we already do with GICv5
legacy interface, so flip the capability over.
Reported-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Fixes: 2a28810cbb8b2 ("KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping")
Link: https://lore.kernel.org/r/5df713d4-8b79-4456-8fd1-707ca89a61b6@arm.com
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://msgid.link/20251125160144.1086511-1-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Orange Pi RV is a SBC based on the StarFive VisionFive 2 board.
Orange Pi RV features:
- StarFive JH7110 SoC
- GbE port connected to JH7110 GMAC0 via YT8531 PHY
- 4x USB ports via VL805 PCIe USB controller connected to JH7110 pcie0
- M.2 M-key slot connected to JH7110 pcie1
- HDMI video output
- 3.5mm audio output
- Ampak AP6256 SDIO Wi-Fi/Bluetooth module on mmc0
- microSD slot on mmc1
- SPI NOR flash memory
- 24c02 EEPROM (read only by default)
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Signed-off-by: E Shattow <e@freeshell.de>
[conor: amend comment to say what's missing]
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
|
|
VisionFive 2 Lite eMMC board uses a non-removable onboard 64GiB eMMC
instead of the MicroSD slot.
Acked-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Tested-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
|
|
VisionFive 2 Lite is a mini SBC based on the StarFive JH7110S SoC.
Board features:
- JH7110S SoC
- 4/8 GiB LPDDR4 DRAM
- AXP15060 PMIC
- 40 pin GPIO header
- 1x USB 3.0 host port
- 3x USB 2.0 host port
- 1x M.2 M-Key (size: 2242)
- 1x MicroSD slot (optional non-removable 64GiB eMMC)
- 1x QSPI Flash
- 1x I2C EEPROM
- 1x 1Gbps Ethernet port
- SDIO-based Wi-Fi & UART-based Bluetooth
- 1x HDMI port
- 1x 2-lane DSI
- 1x 2-lane CSI
VisionFive 2 Lite schematics: https://doc-en.rvspace.org/VisionFive2Lite/PDF/VF2_LITE_V1.10_TF_20250818_SCH.pdf
VisionFive 2 Lite Quick Start Guide: https://doc-en.rvspace.org/VisionFive2Lite/VisionFive2LiteQSG/index.html
More documents: https://doc-en.rvspace.org/Doc_Center/visionfive_2_lite.html
Acked-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Tested-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
|
|
Add a common board dtsi for use by VisionFive 2 Lite and
VisionFive 2 Lite eMMC.
Acked-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Tested-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
|
|
Some node in this file are not used by the upcoming VisionFive 2 Lite
board. Move them to the board dts to prepare for adding the new
VisionFive 2 Lite device tree.
Tested-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"We've got a revert due to one of the recent CCA commits breaking ACPI
firmware-based error reporting, a fix for a hard-lockup introduced by
a prior fix affecting non-default (CONFIG_EXPERT) configurations and
another ACPI fix for systems using MMIO-based timers.
Other than that, we're looking pretty good.
- Avoid hardlockup when CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY=n
- Fix regression in APEI/GHES error handling
- Fix MMIO timers when probed via ACPI"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: proton-pack: Fix hard lockup when !MITIGATE_SPECTRE_BRANCH_HISTORY
ACPI: GTDT: Correctly number platform devices for MMIO timers
Revert "arm64: acpi: Enable ACPI CCEL support"
|
|
The compiler/assembler flag -m64 is added and removed at two locations.
This pointless exercise is a leftover to keep the 31 and 64 bit vdso
Makefiles as symmetrical as possible. Given that the 31 bit vdso code
does not exist anymore, remove the -m64 flag handling.
Suggested-by: Jens Remus <jremus@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
Since compat is gone there is only a 64 bit vdso left.
Remove the superfluous "64" suffix everywhere.
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
All the code is 64 bit, therefore remove the superfluous suffix.
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
This simplifies the vDSO linker script. The ELF_DETAILS macro was not
used in addition, as done on arm64 and powerpc, as that would introduce
an empty .modinfo section.
Note that this rearranges the .comment section to follow after all of
the debug sections.
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
In order to work around the existence of a vmap symbol in libpcap, the
UML makefile unconditionally redefines vmap to kernel_vmap. However,
this not only affects the actual vmap symbol, but also anything else
named vmap, including a number of struct members in DRM.
This would not be too much of a problem, since all uses are also
updated, except we now have Rust DRM bindings, which expect the
corresponding Rust structs to have 'vmap' names. Since the redefinition
applies in bindgen, but not to Rust code, we end up with errors such as:
error[E0560]: struct `drm_gem_object_funcs` has no fields named `vmap`
--> rust/kernel/drm/gem/mod.rs:210:9
Since libpcap support was removed in commit 12b8e7e69aa7 ("um: Remove
obsolete pcap driver"), remove the, now unnecessary, define as well.
We also take this opportunity to update the comment.
Signed-off-by: David Gow <davidgow@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20251122083213.3996586-1-davidgow@google.com
Fixes: 12b8e7e69aa7 ("um: Remove obsolete pcap driver")
[adjust commmit message a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into soc/dt
New boards: QNAP TS233 (2-bay variant of the RK3568 NAS series) and
Asus Tinkerboard 3 + 3S.
Additional peripherals enabled on 100ASK DshanPi A1, Orange Pi 3B,
Indiedroid Nova, QNAP-TSx33 series + LED states on Radxa boards,
power-domains for the previously added RK3368 display components.
* tag 'v6.19-rockchip-dts64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip: (22 commits)
arm64: dts: rockchip: enable RTC for 100ASK DshanPi A1
arm64: dts: rockchip: enable USB for 100ASK DshanPi A1
arm64: dts: rockchip: enable button for 100ASK DshanPi A1
arm64: dts: rockchip: add mmc aliases for 100ASK DshanPi A1
arm64: dts: rockchip: remove mmc max-frequency for 100ASK DshanPi A1
arm64: dts: rockchip: Enable i2c2 on Orange Pi 3B
arm64: dts: rockchip: Use default-state for power LED for Radxa boards
arm64: dts: rockchip: fix PCIe 3.3V regulator voltage on 9Tripod X3568 v4
arm64: dts: rockchip: Add power-domain to RK3368 VOP controller
arm64: dts: rockchip: Add power-domain to RK3368 DSI controller
arm64: dts: rockchip: Add host wake pin for wifi on Indiedroid Nova
arm64: dts: rockchip: Correct pinctrl for pcie for Indiedroid Nova
arm64: dts: rockchip: Define regulator for pcie2x1l2 on Indiedroid Nova
arm64: dts: rockchip: Add clk32k_in for Indiedroid Nova
arm64: dts: rockchip: Add Asus Tinker Board 3 and 3S device tree
dt-bindings: arm: rockchip: Add Asus Tinker Board 3/3S
dt-bindings: arm: rockchip: merge Asus Tinker and Tinker S
arm64: dts: rockchip: add QNAP TS233 devicetree
dt-bindings: arm: rockchip: add TS233 to RK3568-based QNAP NAS devices
arm64: dts: rockchip: move common qnap tsx33 parts to dtsi
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
|
|
The various "syscon" nodes in SC9860 are only referenced by clock
provider nodes in a 1:1 relationship, and nothing else references the
"syscon" nodes. There's no apparent reason for this split. The 2 nodes
can simply be merged into 1 node. The clock driver has supported using
either "reg" or "sprd,syscon" to access registers from the start, so
there shouldn't be any compatibility issues.
With this, DT schema warnings for missing a specific compatible with
"syscon" and non-MMIO devices on "simple-bus" are fixed.
Reviewed-by: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20251124210031.767382-2-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
|
|
The Svrsw60t59b extension allows to free the PTE reserved bits 60 and 59
for software, this patch uses bit 60 for uffd-wp tracking
Additionally for tracking the uffd-wp state as a PTE swap bit, we borrow
bit 4 which is not involved into swap entry computation.
Link: https://lkml.kernel.org/r/20251113072806.795029-6-zhangchunyan@iscas.ac.cn
Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Jones <ajones@ventanamicro.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Conor Dooley <conor.dooley@microchip.com>
Cc: Conor Dooley <conor@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Deepak Gupta <debug@rivosinc.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yuanchu Xie <yuanchu@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
The Svrsw60t59b extension allows to free the PTE reserved bits 60 and 59
for software, this patch uses bit 59 for soft-dirty.
To add swap PTE soft-dirty tracking, we borrow bit 3 which is available
for swap PTEs on RISC-V systems.
Link: https://lkml.kernel.org/r/20251113072806.795029-5-zhangchunyan@iscas.ac.cn
Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn>
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Jones <ajones@ventanamicro.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Conor Dooley <conor.dooley@microchip.com>
Cc: Conor Dooley <conor@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yuanchu Xie <yuanchu@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
The Svrsw60t59b extension allows to free the PTE reserved bits 60 and 59
for software to use.
Link: https://lkml.kernel.org/r/20251113072806.795029-4-zhangchunyan@iscas.ac.cn
Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Conor Dooley <conor.dooley@microchip.com>
Cc: Conor Dooley <conor@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yuanchu Xie <yuanchu@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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There is simply no need for the hugely confusing concept of 'non-swap'
swap entries now we have the concept of softleaf entries and relevant
softleaf_xxx() helpers.
Adjust all callers to use these instead and remove non_swap_entry()
altogether.
No functional change intended.
Link: https://lkml.kernel.org/r/2562093f37f4a9cffea0447058014485eb50aaaf.1762812360.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mathew Brost <matthew.brost@intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Xu <weixugc@google.com>
Cc: xu xin <xu.xin16@zte.com.cn>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Change page_free to folio_free to make the folio support for
zone device-private more consistent. The PCI P2PDMA callback
has also been updated and changed to folio_free() as a result.
For drivers that do not support folios (yet), the folio is
converted back into page via &folio->page and the page is used
as is, in the current callback implementation.
Link: https://lkml.kernel.org/r/20251001065707.920170-3-balbirs@nvidia.com
Signed-off-by: Balbir Singh <balbirs@nvidia.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Mika Penttilä <mpenttil@redhat.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Francois Dugast <francois.dugast@intel.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Patch series "mm: support device-private THP", v7.
This patch series introduces support for Transparent Huge Page (THP)
migration in zone device-private memory. The implementation enables
efficient migration of large folios between system memory and
device-private memory
Background
Current zone device-private memory implementation only supports PAGE_SIZE
granularity, leading to:
- Increased TLB pressure
- Inefficient migration between CPU and device memory
This series extends the existing zone device-private infrastructure to
support THP, leading to:
- Reduced page table overhead
- Improved memory bandwidth utilization
- Seamless fallback to base pages when needed
In my local testing (using lib/test_hmm) and a throughput test, the series
shows a 350% improvement in data transfer throughput and a 80% improvement
in latency
These patches build on the earlier posts by Ralph Campbell [1]
Two new flags are added in vma_migration to select and mark compound
pages. migrate_vma_setup(), migrate_vma_pages() and
migrate_vma_finalize() support migration of these pages when
MIGRATE_VMA_SELECT_COMPOUND is passed in as arguments.
The series also adds zone device awareness to (m)THP pages along with
fault handling of large zone device private pages. page vma walk and the
rmap code is also zone device aware. Support has also been added for
folios that might need to be split in the middle of migration (when the
src and dst do not agree on MIGRATE_PFN_COMPOUND), that occurs when src
side of the migration can migrate large pages, but the destination has not
been able to allocate large pages. The code supported and used
folio_split() when migrating THP pages, this is used when
MIGRATE_VMA_SELECT_COMPOUND is not passed as an argument to
migrate_vma_setup().
The test infrastructure lib/test_hmm.c has been enhanced to support THP
migration. A new ioctl to emulate failure of large page allocations has
been added to test the folio split code path. hmm-tests.c has new test
cases for huge page migration and to test the folio split path. A new
throughput test has been added as well.
The nouveau dmem code has been enhanced to use the new THP migration
capability.
mTHP support:
The patches hard code, HPAGE_PMD_NR in a few places, but the code has been
kept generic to support various order sizes. With additional refactoring
of the code support of different order sizes should be possible.
The future plan is to post enhancements to support mTHP with a rough
design as follows:
1. Add the notion of allowable thp orders to the HMM based test driver
2. For non PMD based THP paths in migrate_device.c, check to see if
a suitable order is found and supported by the driver
3. Iterate across orders to check the highest supported order for migration
4. Migrate and finalize
The mTHP patches can be built on top of this series, the key design
elements that need to be worked out are infrastructure and driver support
for multiple ordered pages and their migration.
HMM support for large folios was added in 10b9feee2d0d ("mm/hmm:
populate PFNs from PMD swap entry").
This patch (of 16)
Add routines to support allocation of large order zone device folios and
helper functions for zone device folios, to check if a folio is device
private and helpers for setting zone device data.
When large folios are used, the existing page_free() callback in pgmap is
called when the folio is freed, this is true for both PAGE_SIZE and higher
order pages.
Zone device private large folios do not support deferred split and scan
like normal THP folios.
Link: https://lkml.kernel.org/r/20251001065707.920170-1-balbirs@nvidia.com
Link: https://lkml.kernel.org/r/20251001065707.920170-2-balbirs@nvidia.com
Link: https://lore.kernel.org/linux-mm/20201106005147.20113-1-rcampbell@nvidia.com/ [1]
Signed-off-by: Balbir Singh <balbirs@nvidia.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Mika Penttilä <mpenttil@redhat.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Francois Dugast <francois.dugast@intel.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
For hugetlbs, gmap puds have the present bit set. For normal puds (which
point to ptes), the bit is not set. This is in contrast to the normal
userspace puds, which always have the bit set for present pmds.
This causes issues when ___pte_offset_map() is modified to only check for
the present bit.
The solution to the problem is simply to always set the present bit for
present gmap pmds.
Link: https://lkml.kernel.org/r/20251028130150.57379-2-imbrenda@linux.ibm.com
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Link: https://lore.kernel.org/lkml/20251017144924.10034-1-borntraeger@linux.ibm.com/
Tested-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Balbir Singh <balbirs@nvidia.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Francois Dugast <francois.dugast@intel.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Lyude <lyude@redhat.com>
Cc: Mathew Brost <matthew.brost@intel.com>
Cc: Mika Penttilä <mpenttil@redhat.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Since we can't decide to trap the DIR register on a per-vcpu basis,
always trap the second page of the GIC CPU interface. Yes, this is
costly. On the bright side, no sane SW should use EOImode==1 on
GICv2...
Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://msgid.link/20251120172540.2267180-40-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
|
Add the plumbing of GICv2 interrupt deactivation via GICV_DIR.
This requires adding a new device so that we can easily decode
the DIR address.
The deactivation itself is very similar to the GICv3 version.
Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://msgid.link/20251120172540.2267180-39-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
