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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-21 12:19:56 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-21 12:19:56 -0800 |
| commit | 7b15c27e2f7b6d114770c2922b2c49d2e8f3867c (patch) | |
| tree | 96be1dfb322e23fca3de86b1e27244c74a6132fc /arch/x86 | |
| parent | 9eef02334505411667a7b51a8f349f8c6c4f3b66 (diff) | |
| parent | 8cf55f24ce6cf90eb8828421e15e9efcd508bd2c (diff) | |
| download | linux-7b15c27e2f7b6d114770c2922b2c49d2e8f3867c.tar.bz2 | |
Merge tag 'core-mm-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull tlb gather updates from Ingo Molnar:
"Theses fix MM (soft-)dirty bit management in the procfs code & clean
up the TLB gather API"
* tag 'core-mm-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ldt: Use tlb_gather_mmu_fullmm() when freeing LDT page-tables
tlb: arch: Remove empty __tlb_remove_tlb_entry() stubs
tlb: mmu_gather: Remove start/end arguments from tlb_gather_mmu()
tlb: mmu_gather: Introduce tlb_gather_mmu_fullmm()
tlb: mmu_gather: Remove unused start/end arguments from tlb_finish_mmu()
mm: proc: Invalidate TLB after clearing soft-dirty page state
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/tlb.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/ldt.c | 10 |
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/include/asm/tlb.h b/arch/x86/include/asm/tlb.h index 820082bd6880..1bfe979bb9bc 100644 --- a/arch/x86/include/asm/tlb.h +++ b/arch/x86/include/asm/tlb.h @@ -4,7 +4,6 @@ #define tlb_start_vma(tlb, vma) do { } while (0) #define tlb_end_vma(tlb, vma) do { } while (0) -#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0) #define tlb_flush tlb_flush static inline void tlb_flush(struct mmu_gather *tlb); diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index b8aee71840ae..aa15132228da 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -398,9 +398,15 @@ static void free_ldt_pgtables(struct mm_struct *mm) if (!boot_cpu_has(X86_FEATURE_PTI)) return; - tlb_gather_mmu(&tlb, mm, start, end); + /* + * Although free_pgd_range() is intended for freeing user + * page-tables, it also works out for kernel mappings on x86. + * We use tlb_gather_mmu_fullmm() to avoid confusing the + * range-tracking logic in __tlb_adjust_range(). + */ + tlb_gather_mmu_fullmm(&tlb, mm); free_pgd_range(&tlb, start, end, start, end); - tlb_finish_mmu(&tlb, start, end); + tlb_finish_mmu(&tlb); #endif } |