On Wed, 5 May 2010 08:39:47 pm Michael S. Tsirkin wrote:
> Hi!
> I see this in virtio_ring.c:
>
> /* Put entry in available array (but don't update avail->idx *
> until they do sync). */
>
> Why is it done this way?
> It seems that updating the index straight away would be simpler, while
> this might allow the host to specilatively look up the buffer and handle
> it, without waiting for the kick.
I agree. From my TODO:
what if we actually expose in ->add_buf?
I don't *think* anyone adds buffers without being ready for them to be used,
so changing this should be safe.
Want to give it a try and report back?
Thanks!
Rusty.
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