This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Problem: Pattern with vertical colored lines on the dom0

On Mon, Sep 27, 2010 at 02:06:26PM +0200, Dietmar Hahn wrote:
> Hi Jean,
> many thanks for this hint! This saved me a lot of time searching through
> the specs.
> Am 24.09.2010 schrieb Jean Guyader:
> > The problem we saw with that the bit 10 of the GCC (offset 0x52 on the
> > PCH config space)
> > wasn't set after the bios. This bit probably enable the shadow GTT
> > (created with the GTT + vt-d).
> Yes, the same problem here!
> I found the following patch, maybe something similar would help here too?
> https://patchwork.kernel.org/patch/132771

There looks to be another in the upstream kernels:

> So I have to hit the bios development :-(

Well, we should probably provide a quirk check in the Xen code.

Copying the Intel folks to see if they any ideas on adding this in the Intel 
code paths. Or they might have already a patch ready for this?
> > The vertical stripes means GTT fault.
> > 
> > Jean
> Many thanks!
> Dietmar.
> -- 
> Company details: http://ts.fujitsu.com/imprint.html
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>