[PATCH for-6.0 1/6] qapi: Add query-accel command

[Roman Bolshakov <r.bolshakov@yadro.com>]

There's a problem for management applications to determine if certain
accelerators available. Generic QMP command should help with that.

Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
---
 monitor/qmp-cmds.c | 15 +++++++++++++++
 qapi/machine.json  | 19 +++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index a08143b323..0454394e76 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -62,6 +62,21 @@ KvmInfo *qmp_query_kvm(Error **errp)
     return info;
 }
 
+KvmInfo *qmp_query_accel(const char *name, Error **errp)
+{
+    KvmInfo *info = g_malloc0(sizeof(*info));
+
+    AccelClass *ac = accel_find(name);
+
+    if (ac) {
+        info->enabled = *ac->allowed;
+        info->present = true;
+    }
+
+    return info;
+}
+
+
 UuidInfo *qmp_query_uuid(Error **errp)
 {
     UuidInfo *info = g_malloc0(sizeof(*info));
diff --git a/qapi/machine.json b/qapi/machine.json
index 7c9a263778..11f364fab4 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -591,6 +591,25 @@
 ##
 { 'command': 'query-kvm', 'returns': 'KvmInfo' }
 
+##
+# @query-accel:
+#
+# Returns information about an accelerator
+#
+# Returns: @KvmInfo
+#
+# Since: 6.0.0
+#
+# Example:
+#
+# -> { "execute": "query-accel", "arguments": { "name": "kvm" } }
+# <- { "return": { "enabled": true, "present": true } }
+#
+##
+{ 'command': 'query-accel',
+  'data': { 'name': 'str' },
+  'returns': 'KvmInfo' }
+
 ##
 # @NumaOptionsType:
 #
-- 
2.29.2