From: Tom Dohrmann <erbse.13@xxxxxx> There's no reason to return an error when encountering an page state change request (PSC request) because that's normal behaviour on the guest's part. Instead 0 should be returned to cause a VM exit so that userspace can handle the page state change request. Link: https://lore.kernel.org/lkml/Y77J7C2E9Xd1QcmZ@notebook/ Signed-off-by: Tom Dohrmann <erbse.13@xxxxxx> Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxxx> --- arch/x86/kvm/svm/sev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index d76127f1499a..899c78d03c35 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -4068,7 +4068,7 @@ static int sev_handle_vmgexit_msr_protocol(struct vcpu_svm *svm) vcpu->run->vmgexit.ghcb_msr = control->ghcb_gpa; vcpu->arch.complete_userspace_io = snp_complete_psc_msr_protocol; - ret = -1; + ret = 0; break; case GHCB_MSR_TERM_REQ: { u64 reason_set, reason_code; -- 2.38.1
