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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-03 22:19:23 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-03 22:19:23 +0300 |
| commit | 22fbc037cd32e4e6771d2271b565806cfb8c134c (patch) | |
| tree | e22ce4a684188cb40401a06de991e930e5a31fba /arch/arm64 | |
| parent | 5ee56135b2f5886cb0333d18640043a8f73fa830 (diff) | |
| parent | e2e1a1c86bf32a8d7458b9024f518cf2434414c8 (diff) | |
| download | linux-22fbc037cd32e4e6771d2271b565806cfb8c134c.tar.xz | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Two bugfixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept
KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/tlb.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/tlb.c b/arch/arm64/kvm/hyp/nvhe/tlb.c index 69eae608d670..b15d65a42042 100644 --- a/arch/arm64/kvm/hyp/nvhe/tlb.c +++ b/arch/arm64/kvm/hyp/nvhe/tlb.c @@ -31,7 +31,14 @@ static void __tlb_switch_to_guest(struct kvm_s2_mmu *mmu, isb(); } + /* + * __load_guest_stage2() includes an ISB only when the AT + * workaround is applied. Take care of the opposite condition, + * ensuring that we always have an ISB, but not two ISBs back + * to back. + */ __load_guest_stage2(mmu); + asm(ALTERNATIVE("isb", "nop", ARM64_WORKAROUND_SPECULATIVE_AT)); } static void __tlb_switch_to_host(struct tlb_inv_context *cxt) |