On Mon, Nov 22, 2010 at 03:04:51PM +0200, Gleb Natapov wrote: > On Mon, Nov 22, 2010 at 10:16:57AM +0200, Michael S. Tsirkin wrote: > > On Mon, Nov 22, 2010 at 09:37:07AM +0200, Gleb Natapov wrote: > > > > > > It's probably required to make them stable anyway. > > > > > > > > > > > Why? > > > > > > > > To avoid bus renumbering on reboot after you add a pci-to-pci bridge. > > > > > > > Why should qemu care? > > > > Stable bus numbering is a feature *users* care about, because > > some Guest OSes get confused when a card gets moved to another > > bus. > > > So if user cares about it it should not change HW configuration of QEMU. > I guess those OSes knows how to handle hot-pluggable equipment otherwise > they will get confused on real HW too. Why QEMU should care to preserve > something in a face of configuration change? > > -- > Gleb.
We've been there, weren't we? See http://fedoraproject.org/wiki/Features/KVM_Stable_PCI_Addresses#KVM_Stable_PCI_Addresses -- MST
