Subject: Re: [PATCH 1/2] virtio: support unlocked queue poll

From: Rusty Russell <[email-masked]>
Date: Wed, 10 Jul 2013 12:39:58 +0930

"Michael S. Tsirkin" <[email-masked]> writes:
> This adds a way to check ring empty state after enable_cb outside any
> locks. Will be used by virtio_net.
>
> Note: there's room for more optimization: caller is likely to have a
> memory barrier already, which means we might be able to get rid of a
> barrier here.  Deferring this optimization until we do some
> benchmarking.
>
> Signed-off-by: Michael S. Tsirkin <[email-masked]>

Acked-by: Rusty Russell <[email-masked]>

Thanks,
Rusty.