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[Qemu-devel] Re: [PATCH] virtio spec: add virtio-blk max sectors feature


From: Rusty Russell
Subject: [Qemu-devel] Re: [PATCH] virtio spec: add virtio-blk max sectors feature
Date: Tue, 8 Dec 2009 16:18:00 +1030
User-agent: KMail/1.12.2 (Linux/2.6.31-16-generic; KDE/4.3.2; i686; ; )

On Thu, 3 Dec 2009 08:28:38 pm Avi Kivity wrote:
> On 12/03/2009 10:42 AM, Avishay Traeger1 wrote:
> > I previously submitted a patch to have the guest virtio-blk driver get the
> > value for the maximum I/O size from the host bdrv, rather than assume that
> > there is no limit.  Avi requested that I first patch the virtio spec
> > (http://ozlabs.org/~rusty/virtio-spec/).  Below is that patch.
> >
> > Please CC me on replies, as I am not subscribed.
> >
> >    
> 
> Copying Rusty and address@hidden

Thanks Avi...

Avishay; this would be the total sectors in an I/O, as separate from SIZE_MAX
(maximum size of any single scatterlist entry) and SEG_MAX (maximum number of
scatterlist entries)?

Seems like a reasonable idea; esp if you need it.

Thanks!
Rusty.




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