1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 07756b7348ae..fd6e316c1a23 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2974,9 +2974,6 @@ static void sev_es_init_vmcb(struct vcpu_svm *svm)
 	svm_set_intercept(svm, TRAP_CR4_WRITE);
 	svm_set_intercept(svm, TRAP_CR8_WRITE);
 
-	/* No support for enable_vmware_backdoor */
-	clr_exception_intercept(svm, GP_VECTOR);
-
 	/* Can't intercept XSETBV, HV can't modify XCR0 directly */
 	svm_clr_intercept(svm, INTERCEPT_XSETBV);
 
@@ -3002,6 +2999,12 @@ void sev_init_vmcb(struct vcpu_svm *svm)
 	svm->vmcb->control.nested_ctl |= SVM_NESTED_CTL_SEV_ENABLE;
 	clr_exception_intercept(svm, UD_VECTOR);
 
+	/*
+	 * Don't intercept #GP for SEV guests, e.g. for the VMware backdoor, as
+	 * KVM can't decrypt guest memory to decode the faulting instruction.
+	 */
+	clr_exception_intercept(svm, GP_VECTOR);
+
 	if (sev_es_guest(svm->vcpu.kvm))
 		sev_es_init_vmcb(svm);
 }