qemuDomainDefValidate: Don't require SMM if automatic firmware selection enabled

The firmware selection code will enable the feature if needed.
There's no need to require SMM to be enabled in that case.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>
Reviewed-by: NLaszlo Ersek <lersek@redhat.com>

src/qemu/qemu_domain.c

@@ -4175,7 +4175,9 @@ qemuDomainDefValidate(const virDomainDef *def,
             goto cleanup;
         }
 
-        if (def->features[VIR_DOMAIN_FEATURE_SMM] != VIR_TRISTATE_SWITCH_ON) {
+        /* SMM will be enabled by qemuFirmwareFillDomain() if needed. */
+        if (def->os.firmware == VIR_DOMAIN_OS_DEF_FIRMWARE_NONE &&
+            def->features[VIR_DOMAIN_FEATURE_SMM] != VIR_TRISTATE_SWITCH_ON) {
             virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                            _("Secure boot requires SMM feature enabled"));
             goto cleanup;