@@ -136,6 +136,23 @@ Example:
Note: The "ready to complete" status is always reset by a BLOCK_JOB_ERROR
event.
+DEVICE_DELETED
+-----------------
+
+Emitted whenever the device removal completion is acknowledged
+by the guest. This event is only emitted for devices with
+a user-specified ID.
+At this point, it's safe to reuse the specified device ID.
+Device removal can be initiated by the guest or by HMP/QMP commands.
+
+Data:
+
+- "device": device name (json-string)
+
+{ "event": "DEVICE_DELETED",
+ "data": { "device": "virtio-net-pci-0" },
+ "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
+
DEVICE_TRAY_MOVED
-----------------
@@ -29,6 +29,7 @@
#include "sysemu/sysemu.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
+#include "qapi/qmp/qjson.h"
int qdev_hotplug = 0;
static bool qdev_hot_added = false;
@@ -778,6 +779,11 @@ static void device_unparent(Object *obj)
object_unref(OBJECT(dev->parent_bus));
dev->parent_bus = NULL;
}
+ if (dev->id) {
+ QObject *data = qobject_from_jsonf("{ 'device': %s }", dev->id);
+ monitor_protocol_event(QEVENT_DEVICE_DELETED, data);
+ qobject_decref(data);
+ }
}
static void device_class_init(ObjectClass *class, void *data)
@@ -39,6 +39,7 @@ typedef enum MonitorEvent {
QEVENT_BLOCK_JOB_CANCELLED,
QEVENT_BLOCK_JOB_ERROR,
QEVENT_BLOCK_JOB_READY,
+ QEVENT_DEVICE_DELETED,
QEVENT_DEVICE_TRAY_MOVED,
QEVENT_SUSPEND,
QEVENT_SUSPEND_DISK,
@@ -457,6 +457,7 @@ static const char *monitor_event_names[] = {
[QEVENT_BLOCK_JOB_CANCELLED] = "BLOCK_JOB_CANCELLED",
[QEVENT_BLOCK_JOB_ERROR] = "BLOCK_JOB_ERROR",
[QEVENT_BLOCK_JOB_READY] = "BLOCK_JOB_READY",
+ [QEVENT_DEVICE_DELETED] = "DEVICE_DELETED",
[QEVENT_DEVICE_TRAY_MOVED] = "DEVICE_TRAY_MOVED",
[QEVENT_SUSPEND] = "SUSPEND",
[QEVENT_SUSPEND_DISK] = "SUSPEND_DISK",
@@ -2354,7 +2354,9 @@
# Notes: When this command completes, the device may not be removed from the
# guest. Hot removal is an operation that requires guest cooperation.
# This command merely requests that the guest begin the hot removal
-# process.
+# process. Completion of the device removal process is signaled with a
+# DEVICE_DELETED event. Guest reset will automatically complete removal
+# for all devices.
#
# Since: 0.14.0
##
libvirt has a long-standing bug: when removing the device, it can request removal but does not know when the removal completes. Add an event so we can fix this in a robust way. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- QMP/qmp-events.txt | 17 +++++++++++++++++ hw/qdev.c | 6 ++++++ include/monitor/monitor.h | 1 + monitor.c | 1 + qapi-schema.json | 4 +++- 5 files changed, 28 insertions(+), 1 deletion(-)