Re: [Xen-devel] VT-D On An Asus P5E-VM DO Motherboard Not Working, Xen 3.4.1

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 27/09/2009 16:35, "Michael MacLeod" <mikemacleod@xxxxxxxxx> wrote:

> 2009/9/27 Han, Weidong <weidong.han@xxxxxxxxx>
>> Really? I found following lines in your messages. The base address of RMRR is
>> larger than the end address. It's an obvious error of your BIOS. Thus VT-d is
>> disabled. 
> 
> Han,
> 
> I'm not denying that my BIOS has an error. The question is whether it's an
> error that can be worked around, and why does it affect my particular
> motherboard, but not other people who have the same motherboard and the same
> BIOS revision? These same other users have demonstrated that the DMAR table in
> their BIOS is also corrupt, but that their installation of Xen is able to cope
> with it anyway. I'm hoping that Xen can be made to cope with mine too.

The particular check that you are failing on in Xen has been in since at
least Xen 3.3.0. If others have the same mobo and BIOS, perhaps they are
using an even earlier version of Xen than that? You can try removing the
check that prints that error message, and see how far you get. But you're
not likely to get ongoing support for that here.

 -- Keir




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