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Subject: Re: Configuration vs. compat hints [was Re: [Qemu-devel] [PATCHv3
	03/13] qemu: add routines to manage PCI capabilities]
From: Mark McLoughlin <markmc@redhat.com>
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Date: Mon, 15 Jun 2009 10:09:15 +0100
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Reply-To: Mark McLoughlin <markmc@redhat.com>
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To: Avi Kivity <avi@redhat.com>
Cc: Carsten Otte <cotte@de.ibm.com>, kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>, Glauber Costa <glommer@redhat.com>, Rusty Russell <rusty@rustcorp.com.au>, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, Blue Swirl <blauwirbel@gmail.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Paul Brook <paul@codesourcery.com>

On Sun, 2009-06-14 at 10:58 +0300, Avi Kivity wrote:
> Mark McLoughlin wrote:
> 
>   
> 
> >> I think the point is that you don't need version numbers if you have a 
> >> proper device tree.
> >>     
> >
> > How do you add a new attribute to the device tree and, when a supplied
> > device tree lacking said attribute, distinguish between a device tree
> > from an old version of qemu (i.e. use the old default) and a partial
> > device tree from the VM manager (i.e. use the new default) ?
> >   
> 
> -baseline 0.10

That's a version number :-)

(I was responding to Anthony's "you don't need a version number")

Cheers,
Mark.