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Date: Mon, 21 Jan 2013 09:37:31 -0500
From: Boris Ostrovsky <boris.ostrovsky@amd.com>
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To: =?ISO-8859-1?Q?J=F6rg_R=F6del?= <joro@8bytes.org>
CC: Borislav Petkov <bp@alien8.de>, Udo van den Heuvel <udovdh@xs4all.nl>,
        <linux-kernel@vger.kernel.org>, Jacob Shin <jacob.shin@amd.com>
Subject: Re: 3.6.11  AMD-Vi: Completion-Wait loop timed out
References: <50FBC7EF.6040207@xs4all.nl> <20130120103652.GB16800@pd.tnic> <50FBC994.8020409@xs4all.nl> <20130120111920.GL25591@8bytes.org> <50FBD413.1000406@xs4all.nl> <20130120114011.GN25591@8bytes.org> <20130120114828.GB16519@pd.tnic> <20130120115755.GO25591@8bytes.org>
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On 01/20/2013 06:57 AM, Jörg Rödel wrote:
> 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.


Are you talking about erratum 746?

-boris