Re: [PATCH v3] vhost-user: Do not wait for reply for not sent VHOST_USER_SET_LOG_BASE

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Aug 01, 2024 at 08:45:40PM +0800, BillXiang wrote:
> From: BillXiang <xiangwencheng@dayudpu.com>
> 
> Currently, we have added VHOST_USER_SET_LOG_BASE to 
> vhost_user_per_device_request in commit 7c211eb078c4 
> ("vhost-user: Skip unnecessary duplicated VHOST_USER_SET_LOG_BASE requests"), 
> as a result, VHOST_USER_SET_LOG_BASE will be sent only once 
> when 'vq_index == 0'.
> In this patch we add the check of 'vq_index == 0' before 
> vhost_user_read, such that we do not wait for reply for not
> sent VHOST_USER_SET_LOG_BASE.
> 
> Signed-off-by: BillXiang <xiangwencheng@dayudpu.com>
> ---
>  hw/virtio/vhost-user.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
> index 00561daa06..fd12992d15 100644
> --- a/hw/virtio/vhost-user.c
> +++ b/hw/virtio/vhost-user.c
> @@ -460,7 +460,7 @@ static int vhost_user_set_log_base(struct vhost_dev *dev, uint64_t base,
>          return ret;
>      }
>  
> -    if (shmfd) {
> +    if (shmfd && (dev->vq_index == 0)) {
>          msg.hdr.size = 0;
>          ret = vhost_user_read(dev, &msg);
>          if (ret < 0) {



How do things work now after 7c211eb078c4 then?

> -- 
> 2.30.0