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KVM: MMU: set spte accessed bit properly

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Set spte accessed bit only if guest_initiated == 1 that means the really
accessed

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiao Guangrong
2011-03-04 18:58:02 +08:00
committed by Marcelo Tosatti
parent da8dc75f0c
commit 1b7fd45c32
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/mmu.c
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@@ -3307,11 +3307,11 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
spin_lock(&vcpu->kvm->mmu_lock); spin_lock(&vcpu->kvm->mmu_lock);
if (atomic_read(&vcpu->kvm->arch.invlpg_counter) != invlpg_counter) if (atomic_read(&vcpu->kvm->arch.invlpg_counter) != invlpg_counter)
gentry = 0; gentry = 0;
kvm_mmu_access_page(vcpu, gfn);
kvm_mmu_free_some_pages(vcpu); kvm_mmu_free_some_pages(vcpu);
++vcpu->kvm->stat.mmu_pte_write; ++vcpu->kvm->stat.mmu_pte_write;
trace_kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE); trace_kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE);
if (guest_initiated) { if (guest_initiated) {
kvm_mmu_access_page(vcpu, gfn);
if (gfn == vcpu->arch.last_pt_write_gfn if (gfn == vcpu->arch.last_pt_write_gfn
&& !last_updated_pte_accessed(vcpu)) { && !last_updated_pte_accessed(vcpu)) {
++vcpu->arch.last_pt_write_count; ++vcpu->arch.last_pt_write_count;