On Sun, Nov 28, 2010 at 08:11:45PM +0100, Peter Stuge wrote: > Peter Stuge wrote: > > Specifying boot device using PCI BDF is a great example of using > > common structured data. That BDF exists both in machine and firmware > > data models. > > Gleb Natapov wrote: > > Bus numbers are assigned by a guest. Qemu knows nothing about them, > > so it specify device path by topology. > > Quite. By BDF I of course mean topology. ;) > Ah, then we are in violent agreement :) > The BDF itself is not much better than a BBS concept, since only the > firmware knows the details. > Yeap. > But the topology is common, even if bus number differs between > machine and firmware. > Correct. > How is the topology structured? I'm not sure that firmware can use a > "slot" number. Device number on the bus works, is that what you mean? > To specify device path to PCI card using topology one needs to specify slot.fn of all pci-to-pci buses from pci host controller to pci device in question. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
