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author | 2022-07-08 09:18:03 +0200 | |
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committer | 2022-07-21 10:50:13 -0700 | |
commit | 1e9fdf21a4339b102539f476a9842e7526c01939 (patch) | |
tree | 16bddb00103c3b96e15dc5d967b7aa59a3b820fc /arch/loongarch/include/asm/tlb.h | |
parent | scripts/gdb: Fix gdb 'lx-symbols' command (diff) | |
download | linux-1e9fdf21a4339b102539f476a9842e7526c01939.tar.gz linux-1e9fdf21a4339b102539f476a9842e7526c01939.tar.bz2 linux-1e9fdf21a4339b102539f476a9842e7526c01939.zip |
mmu_gather: Remove per arch tlb_{start,end}_vma()
Scattered across the archs are 3 basic forms of tlb_{start,end}_vma().
Provide two new MMU_GATHER_knobs to enumerate them and remove the per
arch tlb_{start,end}_vma() implementations.
- MMU_GATHER_NO_FLUSH_CACHE indicates the arch has flush_cache_range()
but does *NOT* want to call it for each VMA.
- MMU_GATHER_MERGE_VMAS indicates the arch wants to merge the
invalidate across multiple VMAs if possible.
With these it is possible to capture the three forms:
1) empty stubs;
select MMU_GATHER_NO_FLUSH_CACHE and MMU_GATHER_MERGE_VMAS
2) start: flush_cache_range(), end: empty;
select MMU_GATHER_MERGE_VMAS
3) start: flush_cache_range(), end: flush_tlb_range();
default
Obviously, if the architecture does not have flush_cache_range() then
it also doesn't need to select MMU_GATHER_NO_FLUSH_CACHE.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/loongarch/include/asm/tlb.h')
-rw-r--r-- | arch/loongarch/include/asm/tlb.h | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/loongarch/include/asm/tlb.h b/arch/loongarch/include/asm/tlb.h index 4f629ae9d5a9..dd24f5898f65 100644 --- a/arch/loongarch/include/asm/tlb.h +++ b/arch/loongarch/include/asm/tlb.h @@ -137,16 +137,6 @@ static inline void invtlb_all(u32 op, u32 info, u64 addr) ); } -/* - * LoongArch doesn't need any special per-pte or per-vma handling, except - * we need to flush cache for area to be unmapped. - */ -#define tlb_start_vma(tlb, vma) \ - do { \ - if (!(tlb)->fullmm) \ - flush_cache_range(vma, vma->vm_start, vma->vm_end); \ - } while (0) -#define tlb_end_vma(tlb, vma) do { } while (0) #define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0) static void tlb_flush(struct mmu_gather *tlb); |