github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-22 04:34:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

vdpa_sim: clear pending_kick on device reset

Browse Source 
vdpasim_kick_vq() sets pending_kick when a virtqueue is kicked while
the device is suspended (!running but DRIVER_OK).  vdpasim_resume()
later replays kicks for all virtqueues when pending_kick is set.

vdpasim_do_reset() clears running and status but leaves pending_kick
unchanged.  If a kick is deferred during suspend and the device is
reset before resume, a later resume can spuriously kick every
virtqueue even though no new work was queued after reset.

Clear pending_kick in vdpasim_do_reset() together with the other
device state that must not survive a reset.

Tested-on: openEuler VM (6.16.8, /usr/src/linux-6.16.8)
Tested-by: Xiong Weimin <xiongweimin@kylinos.cn>

Signed-off-by: Xiong Weimin <xiongweimin@kylinos.cn>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260626020545.607600-2-15927021679@163.com>
This commit is contained in:
Xiong Weimin 2026-06-26 10:05:44 +08:00 committed by Michael S. Tsirkin
parent b07513e747
commit 135f0abe31
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/vdpa/vdpa_sim/vdpa_sim.c
View File

@ -161,6 +161,7 @@ static void vdpasim_do_reset(struct vdpasim *vdpasim, u32 flags)
}
vdpasim->running = false;
vdpasim->pending_kick = false;
spin_unlock(&vdpasim->iommu_lock);
vdpasim->features = 0;