diff mbox series

[v7,14/15] qmp: Include "reserve" property of memory backends

Message ID 20210428133754.10713-15-david@redhat.com
State New
Headers show
Series RAM_NORESERVE, MAP_NORESERVE and hostmem "reserve" property | expand

Commit Message

David Hildenbrand April 28, 2021, 1:37 p.m. UTC 
Let's include the new property.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Cc: Eric Blake <eblake@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 hw/core/machine-qmp-cmds.c | 1 +
 qapi/machine.json          | 7 +++++++
 2 files changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
index d41db5b93b..2d135ecdd0 100644
--- a/hw/core/machine-qmp-cmds.c
+++ b/hw/core/machine-qmp-cmds.c
@@ -175,6 +175,7 @@  static int query_memdev(Object *obj, void *opaque)
         m->dump = object_property_get_bool(obj, "dump", &error_abort);
         m->prealloc = object_property_get_bool(obj, "prealloc", &error_abort);
         m->share = object_property_get_bool(obj, "share", &error_abort);
+        m->reserve = object_property_get_bool(obj, "reserve", &error_abort);
         m->policy = object_property_get_enum(obj, "policy", "HostMemPolicy",
                                              &error_abort);
         host_nodes = object_property_get_qobject(obj,
diff --git a/qapi/machine.json b/qapi/machine.json
index 32650bfe9e..ea68f1a083 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -798,6 +798,12 @@ 
 #
 # @share: whether memory is private to QEMU or shared (since 6.1)
 #
+# @reserve: whether swap space (or huge pages) was reserved if applicable.
+#           This corresponds to the user configuration and not the actual
+#           behavior implemented in the OS to perform the reservation.
+#           For example, Linux will never reserve swap space for shared
+#           file mappings. (since 6.1)
+#
 # @host-nodes: host nodes for its memory policy
 #
 # @policy: memory policy of memory backend
@@ -812,6 +818,7 @@ 
     'dump':       'bool',
     'prealloc':   'bool',
     'share':      'bool',
+    'reserve':    'bool',
     'host-nodes': ['uint16'],
     'policy':     'HostMemPolicy' }}