linux-kernel - Re: 3.6.11 AMD-Vi: Completion-Wait loop timed out

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Date:	Sun, 20 Jan 2013 12:57:55 +0100
From:	Jörg Rödel <joro@...tes.org>
To:	Borislav Petkov <bp@...en8.de>,
	Udo van den Heuvel <udovdh@...all.nl>,
	linux-kernel@...r.kernel.org,
	Boris Ostrovsky <boris.ostrovsky@....com>,
	Jacob Shin <jacob.shin@....com>
Subject: Re: 3.6.11  AMD-Vi: Completion-Wait loop timed out

On Sun, Jan 20, 2013 at 12:48:28PM +0100, Borislav Petkov wrote:
> On Sun, Jan 20, 2013 at 12:40:11PM +0100, Jörg Rödel wrote:
> > Yes, the BIOS vendor can fix this issue. They need to disable NB clock
> > gating for the IOMMU.
> 
> Right, Udo, you can try Gigabyte first.
> 
> Btw, can't we add a quirk to disable NB clock gating? Maybe Boris and
> Jacob could help. CCed.

BorisO is no longer with AMD afaik. I wrote an email to Sherry and
Suravee and asked them to either send me hardware to write the fix on my
own or to send a fix for the issue. Let's see what happens...


	Joerg


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