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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-08-23 10:47:09 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-23 20:55:58 +0200 |
| commit | fd1102f0aadec7d18792b132e1d224290b2aecca (patch) | |
| tree | 7a30bb6de0aae74f2a1248016778d4063785d2ec /arch/x86/xen/mmu_pv.c | |
| parent | mm/tlb, x86/mm: Support invalidating TLB caches for RCU_TABLE_FREE (diff) | |
| download | linux-fd1102f0aadec7d18792b132e1d224290b2aecca.tar.xz linux-fd1102f0aadec7d18792b132e1d224290b2aecca.zip | |
mm: mmu_notifier fix for tlb_end_vma
The generic tlb_end_vma does not call invalidate_range mmu notifier, and
it resets resets the mmu_gather range, which means the notifier won't be
called on part of the range in case of an unmap that spans multiple
vmas.
ARM64 seems to be the only arch I could see that has notifiers and uses
the generic tlb_end_vma. I have not actually tested it.
[ Catalin and Will point out that ARM64 currently only uses the
notifiers for KVM, which doesn't use the ->invalidate_range()
callback right now, so it's a bug, but one that happens to
not affect them. So not necessary for stable. - Linus ]
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/xen/mmu_pv.c')
0 files changed, 0 insertions, 0 deletions