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. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list