Hi, > + /* > + * Some video bioses and gfx drivers will assume the bdf of IGD is > 00:02.0. > + * So user need to set it to 00:02.0 in Xen configure file explicitly, > + * otherwise IGD will fail to work. > + */ > + pci_reserve_pci_devfn(b, PCI_DEVFN(2, 0));
That is asking for trouble. Slot 2 is used by the qemu vga cards by default, and for quite a while (before memory api was merged) it even was impossible to change it. libvirt still places the vga card at slot 2 for that reason -> boom. I wouldn't be surprised if you find that assumption in other management libs / apps too. Why do you need that patch in the first place? It should be possible to configure qemu to not occupy slot 2 if you need it that way. Just pass '-vga none' to qemu. Which you probably want anyway if you pass-through a vga to the guest. And explicitly configure a slot (via addr= property) for all your pci devices. Doing it only for the IGD works too if you list the device before any other pci device on the qemu command line. cheers, Gerd
