qmp: introduce query-memory-size-summary command

Add a new query-memory-size-summary command which provides the
following memory information in bytes:

  * base-memory - size of "base" memory specified with command line option -m.

  * plugged-memory - amount of memory that was hot-plugged.
    If target does not have CONFIG_MEM_HOTPLUG enabled, no
    value is reported.

Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
Signed-off-by: Mohammed Gamal <mohammed.gamal@profitbricks.com>
Signed-off-by: Eduardo Otubo <eduardo.otubo@profitbricks.com>
Signed-off-by: Vadim Galitsyn <vadim.galitsyn@profitbricks.com>
Reviewed-by: Eugene Crosser <evgenii.cherkashin@profitbricks.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: qemu-devel@nongnu.org
Message-Id: <20170829153022.27004-3-vadim.galitsyn@profitbricks.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Fixup comments as per Igor's review
  Added 'of' from Vadim's reply

1 files changed, 13 insertions, 0 deletions

diff --git a/qmp.c b/qmp.c
index b86201e349..e8c303116a 100644
--- a/qmp.c
+++ b/qmp.c
@@ -709,3 +709,16 @@ ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
 
     return head;
 }
+
+MemoryInfo *qmp_query_memory_size_summary(Error **errp)
+{
+    MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo));
+
+    mem_info->base_memory = ram_size;
+
+    mem_info->plugged_memory = get_plugged_memory_size();
+    mem_info->has_plugged_memory =
+        mem_info->plugged_memory != (uint64_t)-1;
+
+    return mem_info;
+}