Report an error to guest if non-SNP attempts to issue GHCB-based Page
State Change.
Signed-off-by: Michael Roth <[email protected]>
---
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