> I am pretty sure that what is going on is that the option rom is not
> getting mapped to 0xc0000 as required. I don't see how the MTRR failure
> should really matter in this case. One thing that might matter: Linux
> (without Xen) probably does not enable BIOS shadowing for the 0xc0000
> region, and probably does not even now use it as RAM.
If the driver is accessing the BIOS region via /dev/mem, it
should be working as expected.
What version of Xen are you using? 2.0.2 has a number of
improvements as regards X support.
Ian
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