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[Xen-devel] Re: AMD IOMMU related boot failure due to page coalescing c/
| To: | Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Wei Wang2 <wei.wang2@xxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: AMD IOMMU related boot failure due to page coalescing c/s 23767 |
| From: | Keir Fraser <keir.xen@xxxxxxxxx> |
| Date: | Fri, 19 Aug 2011 17:29:20 +0100 |
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| Delivery-date: | Fri, 19 Aug 2011 09:30:20 -0700 |
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| Thread-topic: | AMD IOMMU related boot failure due to page coalescing c/s 23767 |
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On 19/08/2011 17:16, "Ian Jackson" <Ian.Jackson@xxxxxxxxxxxxx> 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.
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