Re: [Xen-devel] [PATCH] amd iommu: Dump flags of IO page faults

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.09.12 at 09:32, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> wrote:
> 4.1:    Capabilities: [54] MSI: Enable- Count=1/1 Maskable- 64bit+
> 4.2:    Capabilities: [54] MSI: Enable+ Count=1/1 Maskable- 64bit+

No surprise you're not seeing any faults on 4.1 - there's no way
they could get reported. I'm somewhat hesitant to pull the
workaround patch from 4.2 into 4.1, as it's wrong for the kernel
to touch the MSI setting of the IOMMU (which is under the
control of Xen) in the first place, but the kernel side patch I had
submitted a while ago wasn't received well. And that patch isn't
really small, and it would remain to be seen what other
dependencies it would have...

Jan


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