The command can be used by libvirt to retrieve the measurement of SEV guest.
This measurement is a signature of the memory contents that was encrypted
through the LAUNCH_UPDATE_DATA.
Cc: "Daniel P. Berrangé" <berrange@xxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>
Cc: Markus Armbruster <armbru@xxxxxxxxxx>
Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx>
---
qapi-schema.json | 30 ++++++++++++++++++++++++++++++
qmp.c | 14 ++++++++++++++
2 files changed, 44 insertions(+)
diff --git a/qapi-schema.json b/qapi-schema.json
index 447ebb15266e..19331bff8883 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3236,3 +3236,33 @@
#
##
{ 'command': 'query-sev', 'returns': 'SevInfo' }
+
+##
+# @SevLaunchMeasureInfo:
+#
+# SEV Guest Launch measurement information
+#
+# @data: the measurement value encoded in base64
+#
+# Since: 2.12
+#
+# Notes: If measurement is not available then a null measurement is returned.
+##
+{ 'struct': 'SevLaunchMeasureInfo', 'data': {'data': 'str'} }
+
+##
+# @query-sev-launch-measure:
+#
+# Query the SEV guest launch information.
+#
+# Returns: The @SevLaunchMeasureInfo for the guest
+#
+# Since: 2.12
+#
+# Example:
+#
+# -> { "execute": "query-sev-launch-measure" }
+# <- { "return": { "data": "4l8LXeNlSPUDlXPJG5966/8%YZ" } }
+#
+##
+{ 'command': 'query-sev-launch-measure', 'returns': 'SevLaunchMeasureInfo' }
diff --git a/qmp.c b/qmp.c
index 1a5cfad09dd0..5fb19b9d0db3 100644
--- a/qmp.c
+++ b/qmp.c
@@ -733,3 +733,17 @@ SevInfo *qmp_query_sev(Error **errp)
return info;
}
+
+SevLaunchMeasureInfo *qmp_query_sev_launch_measure(Error **errp)
+{
+ SevLaunchMeasureInfo *info = NULL;
+
+ if (sev_enabled()) {
+ info = g_malloc0(sizeof(*info));
+ info->data = sev_get_launch_measurement();
+ } else {
+ error_setg(errp, "SEV is not enabled");
+ }
+
+ return info;
+}
--
2.14.3
