xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: X86: Use vcpu->arch.walk_mmu for kvm_mmu_invlpg()

Browse Source 
commit 05b29633c7a956d5675f5fbba70db0d26aa5e73e upstream.

INVLPG operates on guest virtual address, which are represented by
vcpu->arch.walk_mmu.  In nested virtualization scenarios,
kvm_mmu_invlpg() was using the wrong MMU structure; if L2's invlpg were
emulated by L0 (in practice, it hardly happen) when nested two-dimensional
paging is enabled, the call to ->tlb_flush_gva() would be skipped and
the hardware TLB entry would not be invalidated.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Message-Id: <20211124122055.64424-5-jiangshanlai@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lai Jiangshan
2021-11-24 20:20:46 +08:00
committed by Greg Kroah-Hartman
parent c71b5f37b5
commit d4af6d9749
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kvm/mmu/mmu.c
View File

@@ -5152,7 +5152,7 @@ EXPORT_SYMBOL_GPL(kvm_mmu_invalidate_gva);
void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva) void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva)
{ {
kvm_mmu_invalidate_gva(vcpu, vcpu->arch.mmu, gva, INVALID_PAGE); kvm_mmu_invalidate_gva(vcpu, vcpu->arch.walk_mmu, gva, INVALID_PAGE);
++vcpu->stat.invlpg; ++vcpu->stat.invlpg;
} }
EXPORT_SYMBOL_GPL(kvm_mmu_invlpg); EXPORT_SYMBOL_GPL(kvm_mmu_invlpg);