On 2011-09-14 10:27, Alexander Graf wrote: > > On 14.09.2011, at 10:24, Jan Kiszka wrote: > >> On 2011-09-14 10:22, Avi Kivity wrote: >>> On 09/14/2011 11:20 AM, Jan Kiszka wrote: >>>>> >>>>> Anyway PCI supports the vga region at 0xa0000-0xc0000. Where is it >>>>> supposed to be mapped? >>>> >>>> ...but not all PCI bridges make use of this feature / forward legacy >>>> requests. >>>> >>> >>> Then this should be fixed in the bridge? >> >> Yes, it's a PPC bug. > > So how does the bridge not forward it then?
On real HW, by keeping the "VGA Enable" bit off. Or just not issuing requests to the a0000..bffff range. Under QEMU, I would simply provide the VGA model a memory region for legacy stuff that remains unregistered. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
