Report an error to guest if non-SNP attempts to issue GHCB-based Page State Change. Signed-off-by: Michael Roth <michael.roth@xxxxxxx> --- arch/x86/kvm/svm/sev.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 0d8fbd5e25fe..c00081248ffe 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -3289,7 +3289,11 @@ static int sev_es_validate_vmgexit(struct vcpu_svm *svm) case SVM_VMGEXIT_AP_JUMP_TABLE: case SVM_VMGEXIT_UNSUPPORTED_EVENT: case SVM_VMGEXIT_HV_FEATURES: + break; case SVM_VMGEXIT_PSC: + if (!sev_snp_guest(vcpu->kvm)) + goto vmgexit_err; + break; case SVM_VMGEXIT_TERM_REQUEST: case SVM_VMGEXIT_GUEST_REQUEST: case SVM_VMGEXIT_EXT_GUEST_REQUEST: -- 2.25.1
