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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-10-11 11:19:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-10-11 11:19:16 -0700 |
| commit | 9591fdb0611dccdeeeeacb99d89f0098737d209b (patch) | |
| tree | 18dc58bde4ef53e22608244d849837cb76d5f7f5 /drivers/misc | |
| parent | 2f0a7504530c24f55daec7d2364d933bb1a1fa68 (diff) | |
| parent | 4a1e02b15ac174c3c6d5e358e67c4ba980e7b336 (diff) | |
| download | tip-9591fdb0611dccdeeeeacb99d89f0098737d209b.tar.gz | |
Merge tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more x86 updates from Borislav Petkov:
- Remove a bunch of asm implementing condition flags testing in KVM's
emulator in favor of int3_emulate_jcc() which is written in C
- Replace KVM fastops with C-based stubs which avoids problems with the
fastop infra related to latter not adhering to the C ABI due to their
special calling convention and, more importantly, bypassing compiler
control-flow integrity checking because they're written in asm
- Remove wrongly used static branches and other ugliness accumulated
over time in hyperv's hypercall implementation with a proper static
function call to the correct hypervisor call variant
- Add some fixes and modifications to allow running FRED-enabled
kernels in KVM even on non-FRED hardware
- Add kCFI improvements like validating indirect calls and prepare for
enabling kCFI with GCC. Add cmdline params documentation and other
code cleanups
- Use the single-byte 0xd6 insn as the official #UD single-byte
undefined opcode instruction as agreed upon by both x86 vendors
- Other smaller cleanups and touchups all over the place
* tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
x86,retpoline: Optimize patch_retpoline()
x86,ibt: Use UDB instead of 0xEA
x86/cfi: Remove __noinitretpoline and __noretpoline
x86/cfi: Add "debug" option to "cfi=" bootparam
x86/cfi: Standardize on common "CFI:" prefix for CFI reports
x86/cfi: Document the "cfi=" bootparam options
x86/traps: Clarify KCFI instruction layout
compiler_types.h: Move __nocfi out of compiler-specific header
objtool: Validate kCFI calls
x86/fred: KVM: VMX: Always use FRED for IRQs when CONFIG_X86_FRED=y
x86/fred: Play nice with invoking asm_fred_entry_from_kvm() on non-FRED hardware
x86/fred: Install system vector handlers even if FRED isn't fully enabled
x86/hyperv: Use direct call to hypercall-page
x86/hyperv: Clean up hv_do_hypercall()
KVM: x86: Remove fastops
KVM: x86: Convert em_salc() to C
KVM: x86: Introduce EM_ASM_3WCL
KVM: x86: Introduce EM_ASM_1SRC2
KVM: x86: Introduce EM_ASM_2CL
KVM: x86: Introduce EM_ASM_2W
...
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/lkdtm/perms.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm/perms.c b/drivers/misc/lkdtm/perms.c index 6c24426104ba6f..e1f5e9abb30193 100644 --- a/drivers/misc/lkdtm/perms.c +++ b/drivers/misc/lkdtm/perms.c @@ -9,6 +9,7 @@ #include <linux/vmalloc.h> #include <linux/mman.h> #include <linux/uaccess.h> +#include <linux/objtool.h> #include <asm/cacheflush.h> #include <asm/sections.h> @@ -86,6 +87,10 @@ static noinline __nocfi void execute_location(void *dst, bool write) func(); pr_err("FAIL: func returned\n"); } +/* + * Explicitly doing the wrong thing for testing. + */ +ANNOTATE_NOCFI_SYM(execute_location); static void execute_user_location(void *dst) { |