From: Andi Kleen <ak@suse.de>
To: Chris Wedgwood <cw@f00f.org>
Subject: Re: data corruption with nvidia chipsets and IDE/SATA drives (k8 cpu errata needed?)
Date: Wed, 17 Jan 2007 08:29:53 +1100
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Cc: Christoph Anton Mitterer <calestyo@scientia.net>,
       Robert Hancock <hancockr@shaw.ca>, linux-kernel@vger.kernel.org,
       knweiss@gmx.de, andersen@codepoet.org, krader@us.ibm.com,
       lfriedman@nvidia.com, linux-nforce-bugs@nvidia.com
References: <fa.E9jVXDLMKzMZNCbslzUxjMhsInE@ifi.uio.no> <45AD2D00.2040904@scientia.net> <20070116203143.GA4213@tuatara.stupidest.org>
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On Wednesday 17 January 2007 07:31, Chris Wedgwood wrote:
> On Tue, Jan 16, 2007 at 08:52:32PM +0100, Christoph Anton Mitterer wrote:
> > I agree,... it seems drastic, but this is the only really secure
> > solution.
>
> I'd like to here from Andi how he feels about this?  It seems like a
> somewhat drastic solution in some ways given a lot of hardware doesn't
> seem to be affected (or maybe in those cases it's just really hard to
> hit, I don't know).

AMD is looking at the issue. Only Nvidia chipsets seem to be affected,
although there were similar problems on VIA in the past too.
Unless a good workaround comes around soon I'll probably default
to iommu=soft on Nvidia.

-Andi
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