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Re: [libvirt] [PATCH 0/3] add pci-bridge device and address type



在 2013-01-02三的 10:22 +0000,Daniel P. Berrange写道:
> On Wed, Dec 26, 2012 at 09:00:06AM +0800, liguang wrote:
> > Now, it's unnecessary to arrange devices into multi-pci-bus,
> > for example:
> >     <sound model='ac97'>
> >       <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
> >     </sound>
> >    <video>
> >       <model type='cirrus' vram='9216' heads='1'/>
> >       <address type='pci' domain='0x0000' bus='0x1' slot='0x02' function='0x0'/>
> >     </video>
> > libvirt will complain about "bus != 0",
> > fortunately, qemu supports pci-to-pci bridge,
> > if we want to use multi-pci-bus, we can define
> > 2 pci bridge devices then attach 1 to the other
> > as a subordinate pci-bus, so, 2 pci-buses appear.
> > for example:
> >     <pci-bridge type='root'/>
> >     <pci-bridge type='subordinate'>
> >       <address type='pci-bridge' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
> >     </pci-bridge>
> 
> 
> We shouldn't be introducing a new <pci-bridge> device for this. The
> existing <controller> element is intended to handle all types of bus
> devices. Just need to define a new controller type.

okay, let me try to do it.

> 
> Daniel

-- 
regards!
li guang



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