On Wed, Jun 06, 2018 at 09:24:48PM +0800, Yongji Xie wrote:
> Some old guests (before commit 7a11370e5: "virtio_blk: enable VQs early")
> kick virtqueue before setting VIRTIO_CONFIG_S_DRIVER_OK. This violates
> the virtio spec. But virtio 1.0 transitional devices support this behaviour.
> So we should start vhost when guest kicks in this case.
> 
> Signed-off-by: Yongji Xie <xieyongji@baidu.com>
> Signed-off-by: Chai Wen <chaiwen@baidu.com>
> Signed-off-by: Ni Xun <nixun@baidu.com>
> ---
>  hw/block/vhost-user-blk.c |   25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>