Re: [Qemu-devel] [PATCH RFC] virtio: put last seen used index into ring itself

[Michael S. Tsirkin]

On Thu, May 20, 2010 at 02:31:50PM +0930, Rusty Russell wrote:
> Can we do better?  The obvious idea is to try to get rid of last_used and
> used, and use the ring itself.  We would use an invalid entry to mark the
> head of the ring.
> 
> Any other thoughts?
> Rusty.

We also need a way to avoid interrupts at least while we are
processing the ring.

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MST