On 08/12/11 16:18, Christophe Fergeau wrote: [ adding libvirt list to cc: ] Hmm, from a bief scan it looks like that patch adds multifunction=on unconditionally in case qemu supports that. That is wrong IMHO. libvirt should only do that in case the pci slot in question actually has multiple functions. There is another condition which the patch doesn't check for: you always must have a $slot.0 function, you can't have a multifunction device with -- say -- functions 1 and 2 being used. cheers, Gerd