arm64: tlbflush: Allow stride to be specified for __flush_tlb_range()

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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>

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Will Deacon 2018-08-23 19:26:21 +01:00 • committed by Catalin Marinas

parent d8289d3a58

commit 67a902ac59

2 changed files with 10 additions and 7 deletions

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2

arch/arm64/include/asm/tlb.h

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15

arch/arm64/include/asm/tlbflush.h

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