Re: [Xen-devel] [PATCH] amd iommu: re-enable iommu msi if dom0 disabled it

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 08/06/12 14:28, Wei Wang wrote:
> Hi Jan,
> I found that recent dom0 (e.g 3.4 pv_ops) disables iommu msi capability 
> for some reasons and iommu cannot generate any interrupts in this case.
> Attached patch re-enables it in device assignment.

Under which circumstances should dom0 able to play with the IOMMUs ? 
Surely the fact that dom0 can play with the IOMMUs is a bug in itself.

>
> Thanks,
> Wei
>
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-- 
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com


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