QError: Add QERR_KVM_MISSING_CAP

New class for KVM unavailable features errors.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

qerror.c

diff --git a/qerror.c b/qerror.c
index 0c0a510..d8b125e 100644
--- a/qerror.c
+++ b/qerror.c
@@ -48,6 +48,10 @@
         .error_fmt = QERR_DEVICE_NOT_ACTIVE,
         .desc      = "The %(device) device has not been activated by the guest",
     },
+    {
+        .error_fmt = QERR_KVM_MISSING_CAP,
+        .desc      = "Using KVM without %(capability), %(feature) unavailable",
+    },
     {}
 };
 

qerror.h

diff --git a/qerror.h b/qerror.h
index c1be8b9..6c100af 100644
--- a/qerror.h
+++ b/qerror.h
@@ -44,4 +44,7 @@
 #define QERR_DEVICE_NOT_ACTIVE \
         "{ 'class': 'DeviceNotActive', 'data': { 'device': %s } }"
 
+#define QERR_KVM_MISSING_CAP \
+        "{ 'class': 'KVMMissingCap', 'data': { 'capability': %s, 'feature': %s } }"
+
 #endif /* QERROR_H */