On Fri, Jun 01, 2012 at 02:52:56PM +0200, Jan Kiszka wrote: > On 2012-05-30 22:31, Michael S. Tsirkin wrote: > >>> So we'll just have PIIX_NUM_PIC_IRQS entries there and use > >>> irq_count instead of the pic_levels bitmap. > >> > >> Just that this affects generic PCI code, not only PIIX-specific things. > > > > Yes but it's not a problem - pci_bus_irqs sets the map function and nirqs. > > > >> And that we need to save/restore some irq_count field according to the > >> old semantics. > > > > Well, it's a bug: this is redundant info we should not have exposed it. > > > > Anyway, let's make the rest work properly and cleanly first, add a FIXME > > for now, then we'll find a hack making it work for migration. > > It remains non-trivial: I got your patch working (a minor init issue), > but yet without changing the number of IRQs for PIIX3, so keeping the > irq_count semantics for this host bridge.
BTW can you post the fixed version please in case others want to play with it?