Re: [PATCH] virtio: put last seen used index into ring itself

From: Rusty Russell
Date: Tue May 18 2010 - 10:20:34 EST

On Tue, 18 May 2010 10:17:44 am Michael S. Tsirkin wrote:
> Generally, the Host end of the virtio ring doesn't need to see where
> Guest is up to in consuming the ring. However, to completely understand
> what's going on from the outside, this information must be exposed.
> For example, host can reduce the number of interrupts by detecting
> that the guest is currently handling previous buffers.

Thanks applied.

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