[PATCH v7 14/26] hmp: add 'info sev' command

[Brijesh Singh <brijesh.singh@xxxxxxx>]

The command can be used to show the SEV information when memory
encryption is enabled on AMD platform.

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>
---
 hmp-commands-info.hx | 14 ++++++++++++++
 hmp.c                | 19 +++++++++++++++++++
 hmp.h                |  1 +
 3 files changed, 34 insertions(+)

diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index ad590a4ffb2b..236811c465d2 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -865,6 +865,20 @@ STEXI
 @findex info memory_size_summary
 Display the amount of initially allocated and present hotpluggable (if
 enabled) memory in bytes.
+ETEXI
+
+    {
+        .name       = "sev",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show SEV information",
+        .cmd        = hmp_info_sev,
+    },
+
+STEXI
+@item info sev
+@findex info sev
+Show SEV information.
 ETEXI
 
 STEXI
diff --git a/hmp.c b/hmp.c
index b3de32d219b5..8d5aa33a022f 100644
--- a/hmp.c
+++ b/hmp.c
@@ -2922,3 +2922,22 @@ void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict)
     }
     hmp_handle_error(mon, &err);
 }
+
+void hmp_info_sev(Monitor *mon, const QDict *qdict)
+{
+    SevInfo *info;
+
+    info = qmp_query_sev(NULL);
+    monitor_printf(mon, "sev support: ");
+    monitor_printf(mon, "%s\n", info->enabled ? "enabled" : "disabled");
+
+    if (info->enabled) {
+        monitor_printf(mon, "state: %s\n", info->state);
+        monitor_printf(mon, "policy: 0x%x\n", info->policy);
+        monitor_printf(mon, "build id: %u\n", info->build_id);
+        monitor_printf(mon, "api version: %u.%u\n",
+                       info->api_major, info->api_minor);
+    }
+
+    qapi_free_SevInfo(info);
+}
diff --git a/hmp.h b/hmp.h
index 536cb91caa4b..802e0619551d 100644
--- a/hmp.h
+++ b/hmp.h
@@ -148,5 +148,6 @@ void hmp_info_ramblock(Monitor *mon, const QDict *qdict);
 void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict);
 void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict);
 void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict);
+void hmp_info_sev(Monitor *mon, const QDict *qdict);
 
 #endif
-- 
2.14.3