Re: [PATCH 1/4] kvm tools: Support VIRTIO_RING_F_EVENT_IDX

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On Thu, 2011-11-17 at 15:24 +0200, Pekka Enberg wrote:
> On Thu, Nov 17, 2011 at 3:04 PM, Sasha Levin <levinsasha928@xxxxxxxxx> wrote:
> > Support the event index feature in the virtio spec.
> >
> > The results are less notifications between the guest and host, and in
> > result faster operation of the virt queues.
> >
> > Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
> 
> What's this patch doing? There's no mention of VIRTIO_RING_F_EVENT_IDX
> in the diff...

It allows enabling the VIRTIO_RING_F_EVENT_IDX feature in various
virtio-* devices by updating the avail event idx and providing a
function to allow the devices to query the vq and decide if they need to
signal the VQ or not.

-- 

Sasha.

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