From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>,
weidong.han@intel.com, allen.m.kay@intel.com
Cc: xen-devel@lists.xensource.com, Jean Guyader <jean.guyader@gmail.com>
Subject: Re: Problem: Pattern with vertical colored lines on the dom0 screen
Date: Mon, 27 Sep 2010 12:47:06 -0400 [thread overview]
Message-ID: <20100927164706.GC4741@dumpdata.com> (raw)
In-Reply-To: <201009271406.26670.dietmar.hahn@ts.fujitsu.com>
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:
check_tylersburg_isoch
>
> 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 VT-d
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@lists.xensource.com
> http://lists.xensource.com/xen-devel
next prev parent reply other threads:[~2010-09-27 16:47 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-17 13:20 Problem: Pattern with vertical colored lines on the dom0 screen Dietmar Hahn
2010-09-20 20:59 ` Konrad Rzeszutek Wilk
2010-09-21 7:19 ` Dietmar Hahn
2010-09-21 14:42 ` Konrad Rzeszutek Wilk
2010-09-22 13:06 ` Dietmar Hahn
2010-09-22 13:56 ` Konrad Rzeszutek Wilk
2010-09-23 11:53 ` Dietmar Hahn
2010-09-24 9:50 ` Dietmar Hahn
2010-09-22 14:23 ` Jan Beulich
2010-09-23 11:53 ` Dietmar Hahn
2010-09-24 10:19 ` Jean Guyader
2010-09-24 11:10 ` Dietmar Hahn
2010-09-24 11:23 ` Jean Guyader
2010-09-27 12:06 ` Dietmar Hahn
2010-09-27 16:47 ` Konrad Rzeszutek Wilk [this message]
2010-09-28 23:54 ` Kay, Allen M
2010-09-29 6:04 ` Pasi Kärkkäinen
2010-09-29 16:14 ` Kay, Allen M
2010-09-29 19:17 ` Pasi Kärkkäinen
2010-09-29 23:14 ` Kay, Allen M
2010-09-30 7:58 ` Dietmar Hahn
2010-10-04 8:23 ` Jan Beulich
2010-10-04 15:11 ` Kay, Allen M
2010-10-04 15:24 ` Jan Beulich
2010-10-04 18:15 ` Kay, Allen M
2010-10-05 6:51 ` Jan Beulich
2010-10-05 23:20 ` Kay, Allen M
-- strict thread matches above, loose matches on Subject: below --
2010-10-08 20:33 Eric Riser
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