Merge remote-tracking branch 'sstabellini/saverestore-8' into staging

* sstabellini/saverestore-8:
  xen: do not allocate RAM during INMIGRATE runstate
  xen mapcache: check if memory region has moved.
  xen: record physmap changes to xenstore
  Set runstate to INMIGRATE earlier
  Introduce "xen-save-devices-state"
  cirrus_vga: do not reset videoram

Conflicts:
	qapi-schema.json

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

qmp-commands.hx

@@ -441,6 +441,33 @@ Example:
 Note: inject-nmi is only supported for x86 guest currently, it will
       returns "Unsupported" error for non-x86 guest.
 
+EQMP
+
+    {
+        .name       = "xen-save-devices-state",
+        .args_type  = "filename:F",
+    .mhandler.cmd_new = qmp_marshal_input_xen_save_devices_state,
+    },
+
+SQMP
+xen-save-devices-state
+-------
+
+Save the state of all devices to file. The RAM and the block devices
+of the VM are not saved by this command.
+
+Arguments:
+
+- "filename": the file to save the state of the devices to as binary
+data. See xen-save-devices-state.txt for a description of the binary
+format.
+
+Example:
+
+-> { "execute": "xen-save-devices-state",
+     "arguments": { "filename": "/tmp/save" } }
+<- { "return": {} }
+
 EQMP
 
     {