File a349c6c2-ignore-query-sev-capabilities-errors.patch of Package libvirt.17937

commit a349c6c21c67ccf4574dcce0669746031d99f603
Author: Ján Tomko <jtomko@redhat.com>
Date:   Thu Jun 14 09:30:27 2018 +0200

    qemu: ignore query-sev-capabilities errors
    
    The query-sev-capabilities command fails if SEV is not compiled in,
    even though both the command and -object sev-guest are present
    in that case :/
    
    Ignore the errors to avoid spamming the logs:
    internal error: unable to execute QEMU command 'query-sev-capabilities': SEV feature is not available
    
    Signed-off-by: Ján Tomko <jtomko@redhat.com>
    Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
    Reviewed-by: Andrea Bolognani <abologna@redhat.com>

Index: libvirt-4.0.0/src/qemu/qemu_monitor_json.c
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_monitor_json.c
+++ libvirt-4.0.0/src/qemu/qemu_monitor_json.c
@@ -6284,6 +6284,12 @@ qemuMonitorJSONGetSEVCapabilities(qemuMo
     if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
         goto cleanup;
 
+    /* Both -object sev-guest and query-sev-capabilities can be present
+     * even if SEV is not available */
+    if (qemuMonitorJSONHasError(reply, "GenericError")) {
+        ret = 0;
+        goto cleanup;
+    }
 
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;