On 2 September 2013 17:00, Michael S. Tsirkin <m...@redhat.com> wrote: > On Mon, Sep 02, 2013 at 04:53:50PM +0100, Peter Maydell wrote: >> at the moment what happens is that the pci controller >> creates the PCI memory and io memory regions (or cheats >> by reusing the system memory space[*]),
>> [*] I'm pretty sure this is a bug in all platforms that do it. > Well as usual this cheat originated with PIIX. > AFAIK PIIX actually has a shared bus for memory and PCI > so this is not a bug there, I think. It will be when you introduce this "return -1 for unassigned addresses", though, since you only want that to happen for PCI accesses, not system memory accesses, right? thanks -- PMM
