[Qemu-devel] [PATCH v9 09/29] qmp: add query-sev command

[Brijesh Singh]

The QMP query command can used to retrieve the SEV information when
memory encryption is enabled on AMD platform.

Cc: Eric Blake <address@hidden>
Cc: "Daniel P. Berrangé" <address@hidden>
Cc: "Dr. David Alan Gilbert" <address@hidden>
Cc: Markus Armbruster <address@hidden>
Signed-off-by: Brijesh Singh <address@hidden>
---
 qapi-schema.json | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 qmp.c            |  6 ++++++
 2 files changed, 63 insertions(+)

diff --git a/qapi-schema.json b/qapi-schema.json
index 0262b9f20bc6..46f7a3c9ea83 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3189,3 +3189,60 @@
 # Since: 2.11
 ##
 { 'command': 'watchdog-set-action', 'data' : {'action': 'WatchdogAction'} }
+
+##
+# @SevState:
+#
+# An enumeration of SEV state information used during @query-sev.
+#
+# Since: 2.12
+##
+{ 'enum': 'SevState',
+  'data': ['uninit', 'lupdate', 'lsecret', 'running', 'supdate', 'rupdate' ] }
+
+##
+# @SevInfo:
+#
+# Information about Secure Encrypted Virtualization (SEV) support
+#
+# @enabled: true if SEV is active
+#
+# @api-major: SEV API major version
+#
+# @api-minor: SEV API minor version
+#
+# @build-id: SEV FW build id
+#
+# @policy: SEV policy value
+#
+# @state: SEV guest state
+#
+# Since: 2.12
+##
+{ 'struct': 'SevInfo',
+    'data': { 'enabled': 'bool',
+              'api-major': 'uint8',
+              'api-minor' : 'uint8',
+              'build-id' : 'uint8',
+              'policy' : 'uint32',
+              'state' : 'SevState'
+            }
+}
+
+##
+# @query-sev:
+#
+# Returns information about SEV
+#
+# Returns: @SevInfo
+#
+# Since: 2.12
+#
+# Example:
+#
+# -> { "execute": "query-sev" }
+# <- { "return": { "enabled": true, "api-major" : 0, "api-minor" : 0,
+#                  "build-id" : 0, "policy" : 0, "state" : "running" } }
+#
+##
+{ 'command': 'query-sev', 'returns': 'SevInfo' }
diff --git a/qmp.c b/qmp.c
index 793f6f332302..baf0b96528ae 100644
--- a/qmp.c
+++ b/qmp.c
@@ -39,6 +39,7 @@
 #include "qom/object_interfaces.h"
 #include "hw/mem/pc-dimm.h"
 #include "hw/acpi/acpi_dev_interface.h"
+#include "sysemu/sev.h"
 
 NameInfo *qmp_query_name(Error **errp)
 {
@@ -719,3 +720,8 @@ MemoryInfo *qmp_query_memory_size_summary(Error **errp)
 
     return mem_info;
 }
+
+SevInfo *qmp_query_sev(Error **errp)
+{
+    return NULL;
+}
-- 
2.14.3