Re: [Xen-devel] Guest-vs-Host MTRR/PAT conflict and a crash?

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 3/1/08 22:04, "David Stone" <unclestoner@xxxxxxxxx> wrote:

> But hold on...this excercise made me realize that it appears the guest
> is programming the graphics card's BAR with an address (guest-physical
> address of 0x10000000) that is within the guest's system memory (lower
> 1GB of guest-physical address space, 0x00000000-0x40000000).  Can
> someone out there throw me a bone and tell me that I'm right in
> thinking this should never happen?

That should never happen. I wonder where it gets that address from. Perhaps
it is stupidly hardcoded somewhere?

 -- Keir



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