On Thu, Aug 29, 2019 at 04:44:49PM -0700, Chia-I Wu wrote: > The series is > > Reviewed-by: Chia-I Wu <olvaffe@xxxxxxxxx> Thanks. > However I ran into a deadlock with one GPU-heavy app. When I exits > Unigine Valley benchmark with ctrl-c, the entire driver locks up > probably 8 out of 10 times on my machine. When that happens, > virtio_gpu_dequeue_ctrl_func does not return and is blocked inside > virtio_gpu_array_put_free. > > It seems, when the vq becomes full or near full between reclaim_vbufs > and virtio_gpu_array_put_free, virtio_gpu_array_put_free can not free > all of the objects because each call to virtio_gpu_free_object needs > to add several commands to vq. One of the calls ends up being blocked > at "wait_event(vgdev->ctrlq.ack_queue, ...)". Probably it is simply the large number of objects released at once when killing the benchmark which causes the queue to fill up. cheers, Gerd _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
