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Re: [Xen-devel] Re: [pvops xen/next ][iommu] attenpt to passthrough PCI-e usb controllor to PV domU: (XEN) traps.c:2309:d1 Domain attempted WRMSR 000000000000008b from 00000a07:00000000 to 00000000:00000000.
On Mon, Mar 22, 2010 at 10:22:16AM +0100, Christian Tramnitz wrote:
> At 22.03.2010 10:19, Pasi Kärkkäinen wrote:
>>
>> Yeah, that's what I meant. Ok.
>>
>> I thought it was also possible to use VT-d for a PV guest? no?
>>
>> -- Pasi
>
> It is, but this requires iommu=pv as hypervisor boot flag.
> With iommu=1 you can see in the hypervisor log that VTd will be disabled
> for PV.
>
Yep, got it. Thanks.
-- Pasi
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