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

From: Pavel Machek
Date: Thu Nov 05 2009 - 14:23:27 EST

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,
(cesky, pictures)
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