[PATCH] do not call gva_to_gpa on physical address

[Gleb Natapov <gleb@redhat.com>]

When tdp is enabled cr2 passed to emulator is pga not gva, so no need to
call gva_to_gpa on it.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fb08316..721bf0a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3944,10 +3944,13 @@ static bool reexecute_instruction(struct kvm_vcpu *vcpu, gva_t gva)
 	if (kvm_mmu_unprotect_page_virt(vcpu, gva))
 		return true;
 
-	gpa = kvm_mmu_gva_to_gpa_system(vcpu, gva, NULL);
+	if (!tdp_enabled) {
+		gpa = kvm_mmu_gva_to_gpa_system(vcpu, gva, NULL);
 
-	if (gpa == UNMAPPED_GVA)
-		return true; /* let cpu generate fault */
+		if (gpa == UNMAPPED_GVA)
+			return true; /* let cpu generate fault */
+	} else
+		gpa = gva;
 
 	if (!kvm_is_error_hva(gfn_to_hva(vcpu->kvm, gpa >> PAGE_SHIFT)))
 		return true;
--
			Gleb.