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| author | Dev Jain <dev.jain@arm.com> | 2025-07-18 14:32:40 +0530 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-24 19:12:40 -0700 |
| commit | 0aa3657df3ec713fca1f00a57a063b28f2a78147 (patch) | |
| tree | e0ed5db7f23a88076c955765c0045236a5f24b45 /mm/mprotect.c | |
| parent | 1d40f4e3d9d6a2d6807daa22d40ff27fc0c3d0f5 (diff) | |
| download | tip-0aa3657df3ec713fca1f00a57a063b28f2a78147.tar.gz | |
mm: add batched versions of ptep_modify_prot_start/commit
Batch ptep_modify_prot_start/commit in preparation for optimizing
mprotect, implementing them as a simple loop over the corresponding single
pte helpers. Architecture may override these helpers.
Link: https://lkml.kernel.org/r/20250718090244.21092-4-dev.jain@arm.com
Signed-off-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Cc: Yang Shi <yang@os.amperecomputing.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Zhenhua Huang <quic_zhenhuah@quicinc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mprotect.c')
| -rw-r--r-- | mm/mprotect.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index 97adc62c50ab7f..4977f198168ef2 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -204,7 +204,7 @@ static long change_pte_range(struct mmu_gather *tlb, } } - oldpte = ptep_modify_prot_start(vma, addr, pte); + oldpte = modify_prot_start_ptes(vma, addr, pte, nr_ptes); ptent = pte_modify(oldpte, newprot); if (uffd_wp) @@ -230,7 +230,7 @@ static long change_pte_range(struct mmu_gather *tlb, can_change_pte_writable(vma, addr, ptent)) ptent = pte_mkwrite(ptent, vma); - ptep_modify_prot_commit(vma, addr, pte, oldpte, ptent); + modify_prot_commit_ptes(vma, addr, pte, oldpte, ptent, nr_ptes); if (pte_needs_flush(oldpte, ptent)) tlb_flush_pte_range(tlb, addr, PAGE_SIZE); pages++; |