On Mon, Mar 14, 2022 at 02:14:53PM +0800, Jason Wang wrote:
>
> 在 2022/3/11 下午11:28, Suwan Kim 写道:
> > diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
> > index d888f013d9ff..3fcaf937afe1 100644
> > --- a/include/uapi/linux/virtio_blk.h
> > +++ b/include/uapi/linux/virtio_blk.h
> > @@ -119,8 +119,9 @@ struct virtio_blk_config {
> > * deallocation of one or more of the sectors.
> > */
> > __u8 write_zeroes_may_unmap;
> > + __u8 unused1;
> > - __u8 unused1[3];
> > + __virtio16 num_poll_queues;
> > } __attribute__((packed));
>
>
> This looks like a implementation specific (virtio-blk-pci) optimization, how
> about other implementation like vhost-user-blk?
I didn’t consider vhost-user-blk yet. But does vhost-user-blk also
use vritio_blk_config as kernel-qemu interface?
Does vhost-user-blk need additional modification to support polling
in kernel side?
Regards,
Suwan Kim
