KVM: MMU: set spte accessed bit properly

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>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b9bf016d7f0fdc351b4b736c997b6a7cae435463..d5455b1b725fbe144d3097d93e803e20def984c3 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3307,11 +3307,11 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
        spin_lock(&vcpu->kvm->mmu_lock);
        if (atomic_read(&vcpu->kvm->arch.invlpg_counter) != invlpg_counter)
                gentry = 0;
-       kvm_mmu_access_page(vcpu, gfn);
        kvm_mmu_free_some_pages(vcpu);
        ++vcpu->kvm->stat.mmu_pte_write;
        trace_kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE);
        if (guest_initiated) {
+               kvm_mmu_access_page(vcpu, gfn);
                if (gfn == vcpu->arch.last_pt_write_gfn
                    && !last_updated_pte_accessed(vcpu)) {
                        ++vcpu->arch.last_pt_write_count;