riscv: add ASID-based tlbflushing methods

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Implement optimized version of the tlb flushing routines for systems
using ASIDs. These are behind the use_asid_allocator static branch to
not affect existing systems not using ASIDs.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
[hch: rebased on top of previous cleanups, use the same algorithm as
      the non-ASID based code for local vs global flushes, keep functions
      as local as possible]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

...

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Guo Ren 2021-06-06 17:20:50 +02:00 • committed by Palmer Dabbelt

parent 70c7605c08

commit 3f1e782998

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3 changed files with 43 additions and 8 deletions

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2

arch/riscv/include/asm/mmu_context.h

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2

arch/riscv/mm/context.c

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49

arch/riscv/mm/tlbflush.c

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