KVM: SVM: No need to unprotect memory during event injection when using npt

No memory is protected anyway.

Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index be86c09..6022888 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1021,7 +1021,7 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
        if (npt_enabled)
                svm_flush_tlb(&svm->vcpu);
 
-       if (event_injection)
+       if (!npt_enabled && event_injection)
                kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address);
        return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code);
 }