On Thu, Sep 13, 2012 at 11:05:07AM -0600, Alex Williamson wrote: > > > > - Apply the hacky patch at the end of this mail to SeaBIOS to > > > > always skip initialising the Radeon's option ROMs, or the VM > > > > would hang inside the Radeon option ROM if you boot the VM > > > > without the default cirrus video. > > > > > > A better way to handle that would probably be to add an pci passthrough > > > config option to not expose the rom to the guest. > > > > > > Any clue *why* the rom doesn't run? > > > > No idea, we didn't look into that -- this was just a one afternoon > > hacking session. > > Thanks for the report. Spawned by your success, I tested a Radeon HD > 5450 using VFIO based device assignment. I can get it to work on > Windows XP, with no changes (from the version I'll post soon), Yay! > but Win7 dies (still need to play around more with your suggestions > of cpu type). ACK. That's a nasty one, don't ask how we found that out... Note that the bluescreen I described when the cpu type is wrong only actually happened for us if the AMD drivers were installed in the VM -- maybe you can try without AMD drivers to see if that makes it go away. If you still have a bluescreen without the AMD drivers installed, it's probably a different issue. > For skipping the option rom, is it sufficient to not expose it > (rombar=0) or does the guest OS driver need it as well? I don't actually know. Something to try out when we get round to testing this again, I suppose.. cheers, Lennert -- 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
