linux-kernel - Re: data corruption with nvidia chipsets and IDE/SATA drives (k8 cpu errata needed?)

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Message-ID: <20070118110028.GA22407@codepoet.org>
Date:	Thu, 18 Jan 2007 04:00:28 -0700
From:	Erik Andersen <andersen@...epoet.org>
To:	Andi Kleen <ak@...e.de>
Cc:	Chris Wedgwood <cw@...f.org>,
	Christoph Anton Mitterer <calestyo@...entia.net>,
	Robert Hancock <hancockr@...w.ca>,
	linux-kernel@...r.kernel.org, knweiss@....de, krader@...ibm.com,
	lfriedman@...dia.com, linux-nforce-bugs@...dia.com
Subject: Re: data corruption with nvidia chipsets and IDE/SATA drives (k8 cpu errata needed?)

On Wed Jan 17, 2007 at 08:29:53AM +1100, Andi Kleen wrote:
> 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.

I just tried again and while using iommu=soft does avoid the
corruption problem, as with previous kernels with 2.6.20-rc5
using iommu=soft still makes my pcHDTV HD5500 DVB cards not work.
I still have to disable memhole and lose 1 GB.  :-(

 -Erik

--
Erik B. Andersen             http://codepoet-consulting.com/
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