diff options
| author | Hou Wenlong <houwenlong.hwl@antgroup.com> | 2022-10-10 15:19:16 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-01-24 21:05:48 +0300 |
| commit | 3cdf93746f9a9a8a81b044219dcf51ce98bd0abf (patch) | |
| tree | 4beec2e7c0f66604fe6e62f72ba289d3d5014f59 | |
| parent | 1b2dc7360463932d2e7cac9461de16ce6fa11cb7 (diff) | |
| download | linux-3cdf93746f9a9a8a81b044219dcf51ce98bd0abf.tar.xz | |
KVM: x86/mmu: Fix wrong gfn range of tlb flushing in validate_direct_spte()
The spte pointing to the children SP is dropped, so the whole gfn range
covered by the children SP should be flushed. Although, Hyper-V may
treat a 1-page flush the same if the address points to a huge page, it
still would be better to use the correct size of huge page.
Fixes: c3134ce240eed ("KVM: Replace old tlb flush function with new one to flush a specified range.")
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Link: https://lore.kernel.org/r/5f297c566f7d7ff2ea6da3c66d050f69ce1b8ede.1665214747.git.houwenlong.hwl@antgroup.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 5e34f07e46ba..47b15c146ba5 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -2414,7 +2414,7 @@ static void validate_direct_spte(struct kvm_vcpu *vcpu, u64 *sptep, return; drop_parent_pte(child, sptep); - kvm_flush_remote_tlbs_with_address(vcpu->kvm, child->gfn, 1); + kvm_flush_remote_tlbs_sptep(vcpu->kvm, sptep); } } |