On Tue, 06/03 15:37, Paolo Bonzini wrote:
> I guess this is more of an RFC, but still a useful starting point for
> discussion.
>
> Il 03/06/2014 14:52, Fam Zheng ha scritto:
> >diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
> >index e406efa..74f0f32 100644
> >--- a/include/hw/virtio/virtio-blk.h
> >+++ b/include/hw/virtio/virtio-blk.h
> >@@ -146,7 +146,6 @@ typedef struct VirtIOBlockReq {
> > #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
> > struct VirtIOBlockDataPlane *s;
>
> This is just dev->dataplane, so it's trivial to remove.
>
> > QEMUIOVector *inhdr; /* iovecs for virtio_blk_inhdr */
>
> This can be unified with the "in" field; the status is only one byte, so
> using a full-blown QEMUIOVector is overkill. Stefan, what do you think?
>
> For the sake of restarting requests, we also need dataplane to populate the
> "out" field for dataplane. We can also take the occasion to change it from
> "struct virtio_blk_outhdr *" to "struct virtio_blk_outhdr" for non-dataplane
> and use iov_discard_front on the elem (see dataplane's process_request
> function).
>
> Can you do it in v2 of this patch series? With this in place we can look at
> the missing pieces:
>
> - rerror/werror
>
> - accounting (trivial)
>
> - multiwrite (if desired).
>
Yes, good idea. I will do it!
Thanks,
Fam
