diff options
| author | Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> | 2024-09-20 12:49:36 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-11-04 16:03:24 -0500 |
| commit | 3f98408e2e4fb1792102aed2cd5425aa0e34cc9c (patch) | |
| tree | 51a19cf1e74936d1c3e40a19c6aa5a356d578dfa /include | |
| parent | 4dfa12731439c4a3cbfd9d1767acddfbf79549fd (diff) | |
qapi: introduce device-sync-config
Add command to sync config from vhost-user backend to the device. It
may be helpful when VHOST_USER_SLAVE_CONFIG_CHANGE_MSG failed or not
triggered interrupt to the guest or just not available (not supported
by vhost-user server).
Command result is racy if allow it during migration. Let's not allow
that.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Raphael Norwitz <raphael@enfabrica.net>
Message-Id: <20240920094936.450987-4-vsementsov@yandex-team.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/qdev-core.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index aa97c34a4b..94914858d8 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -95,6 +95,7 @@ typedef void (*DeviceUnrealize)(DeviceState *dev); typedef void (*DeviceReset)(DeviceState *dev); typedef void (*BusRealize)(BusState *bus, Error **errp); typedef void (*BusUnrealize)(BusState *bus); +typedef int (*DeviceSyncConfig)(DeviceState *dev, Error **errp); /** * struct DeviceClass - The base class for all devices. @@ -103,6 +104,9 @@ typedef void (*BusUnrealize)(BusState *bus); * property is changed to %true. * @unrealize: Callback function invoked when the #DeviceState:realized * property is changed to %false. + * @sync_config: Callback function invoked when QMP command device-sync-config + * is called. Should synchronize device configuration from host to guest part + * and notify the guest about the change. * @hotpluggable: indicates if #DeviceClass is hotpluggable, available * as readonly "hotpluggable" property of #DeviceState instance * @@ -162,6 +166,7 @@ struct DeviceClass { DeviceReset legacy_reset; DeviceRealize realize; DeviceUnrealize unrealize; + DeviceSyncConfig sync_config; /** * @vmsd: device state serialisation description for @@ -547,6 +552,7 @@ bool qdev_hotplug_allowed(DeviceState *dev, Error **errp); */ HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev); void qdev_unplug(DeviceState *dev, Error **errp); +int qdev_sync_config(DeviceState *dev, Error **errp); void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp); void qdev_machine_creation_done(void); |