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Re: [Xen-devel] [PATCH 0/4] x86/IOMMU: multi-vector MSI prerequisites

>>> On 10.04.13 at 16:38, Suravee Suthikulanit <suravee.suthikulpanit@xxxxxxx>
> On 4/10/2013 8:55 AM, Jan Beulich wrote:
>> Suravee,
>> did you have a chance to retry with the v2 patch indicated above,
>> or to gain understanding on the points mentioned above. I'm
>> afraid I won't be able to make any progress (or propose any
>> fixes) without your help here, and we'd really like to have multi-
>> vector MSI support ready for 4.3...
> Sorry I didn't see the patch.  Let me try that and get back to you today.

And irrespective of the patch (which fixes another issue, and
I suppose that's not connected to the problem you saw), did
you find an explanation why the IOMMU lookup in the MSI
message read path would fail, when the same lookup in the MSI
message write path obviously succeeds?


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