Commit 60f24784 authored Aug 27, 2009 by Avi Kivity

KVM: Optimize kvm_mmu_unprotect_page_virt() for tdp



We know no pages are protected, so we can short-circuit the whole thing
(including fairly nasty guest memory accesses).

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

parent 5dadbfd6

arch/x86/kvm/mmu.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2694,6 +2694,9 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva)
		gpa_t gpa;
		int r;

		if (tdp_enabled)
		return 0;

		gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, gva);

		spin_lock(&vcpu->kvm->mmu_lock);