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

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Message-ID: <20130120111920.GL25591@8bytes.org>
Date:	Sun, 20 Jan 2013 12:19:20 +0100
From:	Jörg Rödel <joro@...tes.org>
To:	Udo van den Heuvel <udovdh@...all.nl>
Cc:	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org
Subject: Re: 3.6.11  AMD-Vi: Completion-Wait loop timed out

On Sun, Jan 20, 2013 at 11:40:20AM +0100, Udo van den Heuvel wrote:
> Hello,
> 
> On 2013-01-20 11:36, Borislav Petkov wrote:
> > I know just the guy, CCed. :-)
> 
> Thanks for the quick response!
> I found this similar case:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1073384

Yes, this is a Hardware issue for which the BIOS does not apply the
workaround. The only solution for now is to disable the IOMMU on the
Trinity based chips. Unfortunatly I don't have access to the hardware
any longer to write a workaround in the AMD IOMMU driver.

The question is what to do now, I tend to disable the IOMMU if a
Trinity chip is detected. This is not the first report of this problem
I encountered.

Regards,

	Joerg

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