From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH RFC] virtio: put last seen used index into
	ring itself
Date: Thu, 20 May 2010 13:04:47 +0300
Message-ID: <20100520100447.GC5717@redhat.com>
References: <20100505205814.GA7090@redhat.com> <201005191709.16401.rusty@rustcorp.com.au> <4BF39C12.7090407@redhat.com> <201005201431.51142.rusty@rustcorp.com.au>
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Cc: Avi Kivity <avi@redhat.com>, linux-kernel@vger.kernel.org,
	virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
	qemu-devel@nongnu.org
To: Rusty Russell <rusty@rustcorp.com.au>
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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.

-- 
MST