From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.xen@gmail.com>
Subject: Re: AMD IOMMU related boot failure due to page
	coalescing c/s 23767
Date: Fri, 19 Aug 2011 17:29:20 +0100
Message-ID: <CA744DF0.1F790%keir.xen@gmail.com>
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To: Ian Jackson <Ian.Jackson@eu.citrix.com>, Wei Wang2 <wei.wang2@amd.com>
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On 19/08/2011 17:16, "Ian Jackson" <Ian.Jackson@eu.citrix.com> wrote:

> Wei Wang2 writes ("Re: AMD IOMMU related boot failure due to page coalescing
> c/s 23767"):
>> Oh, that is another issue that I haven't got time to look at...
>> you could use iommu=no-perdev-vector-map to workaround this.
> 
> Err.  Right.  Is there perhaps some other recent changeset that needs
> fixing or reverting ?  That would make five ...

You could try nobbling c/s 23754. E.g., change the static initialiser for
iommu_amd_perdev_vector_map (defined in drivers/passthrough/iommu.c,
somewhat oddly) to 0.

 -- Keir

> Ian.