linux-kernel - Re: data corruption with nvidia chipsets and IDE/SATA drives // memory hole mapping related bug?!

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Date:	Tue, 16 Jan 2007 08:26:05 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Christoph Anton Mitterer <calestyo@...entia.net>
Cc:	linux-kernel@...r.kernel.org, cw@...f.org, knweiss@....de,
	ak@...e.de, andersen@...epoet.org, krader@...ibm.com,
	lfriedman@...dia.com, linux-nforce-bugs@...dia.com
Subject: Re: data corruption with nvidia chipsets and IDE/SATA drives // memory
 hole mapping related bug?!

Christoph Anton Mitterer wrote:
> Ok,.. that sounds reasonable,.. so the whole thing might (!) actually be
> a hardware design error,... but we just don't use that hardware any
> longer when accessing devices via sata_nv.
> 
> So this doesn't solve our problem with PATA drives or other devices
> (although we had until now no reports of errors with other devices) and
> we have to stick with iommu=soft.
> 
> If one use iommu=soft the sata_nv will continue to use the new code for
> the ADMA, right?

Right, that shouldn't affect it.
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