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| 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 /qapi | |
| parent | 4dfa12731439c4a3cbfd9d1767acddfbf79549fd (diff) | |
| download | qemu-3f98408e2e4fb1792102aed2cd5425aa0e34cc9c.zip qemu-3f98408e2e4fb1792102aed2cd5425aa0e34cc9c.tar.gz qemu-3f98408e2e4fb1792102aed2cd5425aa0e34cc9c.tar.bz2 | |
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 'qapi')
| -rw-r--r-- | qapi/qdev.json | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/qapi/qdev.json b/qapi/qdev.json index 53d147c..2a58112 100644 --- a/qapi/qdev.json +++ b/qapi/qdev.json @@ -163,3 +163,27 @@ ## { 'event': 'DEVICE_UNPLUG_GUEST_ERROR', 'data': { '*device': 'str', 'path': 'str' } } + +## +# @device-sync-config: +# +# Synchronize device configuration from host to guest part. First, +# copy the configuration from the host part (backend) to the guest +# part (frontend). Then notify guest software that device +# configuration changed. +# +# The command may be used to notify the guest about block device +# capcity change. Currently only vhost-user-blk device supports +# this. +# +# @id: the device's ID or QOM path +# +# Features: +# +# @unstable: The command is experimental. +# +# Since: 9.1 +## +{ 'command': 'device-sync-config', + 'features': [ 'unstable' ], + 'data': {'id': 'str'} } |