linux-kernel - Re: [PATCH 1/4] x86/amd-iommu: Workaround for erratum 63

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Message-ID: <20091105192315.GD1392@ucw.cz>
Date:	Thu, 5 Nov 2009 20:23:15 +0100
From:	Pavel Machek <pavel@....cz>
To:	Joerg Roedel <joerg.roedel@....com>
Cc:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org, stable@...nel.org
Subject: Re: [PATCH 1/4] x86/amd-iommu: Workaround for erratum 63

On Thu 2009-10-29 17:50:09, Joerg Roedel wrote:
> There is an erratum for IOMMU hardware which documents
> undefined behavior when forwarding SMI requests from
> peripherals and the DTE of that peripheral has a sysmgt
> value of 01b. This problem caused weird IO_PAGE_FAULTS in my
> case.

This should go to comment.

> +
> +
> +void amd_iommu_apply_erratum_63(u16 devid)
> +{
> +	int sysmgt;
> +

...that should go here. Pointer to pdf with erratum would be cool,
too.
								Pavel
-- 
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