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| author | Will Deacon <will.deacon@arm.com> | 2018-08-23 20:26:21 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2018-09-11 17:49:11 +0200 |
| commit | 67a902ac598dca056366a7342f401aa6f605072f (patch) | |
| tree | c748c800db53cd3a9ee3c61d8bba481be1b54b02 /arch/arm64/include/asm/tlb.h | |
| parent | arm64: tlb: Justify non-leaf invalidation in flush_tlb_range() (diff) | |
| download | linux-67a902ac598dca056366a7342f401aa6f605072f.tar.xz linux-67a902ac598dca056366a7342f401aa6f605072f.zip | |
arm64: tlbflush: Allow stride to be specified for __flush_tlb_range()
When we are unmapping intermediate page-table entries or huge pages, we
don't need to issue a TLBI instruction for every PAGE_SIZE chunk in the
VA range being unmapped.
Allow the invalidation stride to be passed to __flush_tlb_range(), and
adjust our "just nuke the ASID" heuristic to take this into account.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/tlb.h')
| -rw-r--r-- | arch/arm64/include/asm/tlb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h index a3233167be60..1e1f68ce28f4 100644 --- a/arch/arm64/include/asm/tlb.h +++ b/arch/arm64/include/asm/tlb.h @@ -53,7 +53,7 @@ static inline void tlb_flush(struct mmu_gather *tlb) * the __(pte|pmd|pud)_free_tlb() functions, so last level * TLBI is sufficient here. */ - __flush_tlb_range(&vma, tlb->start, tlb->end, true); + __flush_tlb_range(&vma, tlb->start, tlb->end, PAGE_SIZE, true); } static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, |