Re: [Xen-devel] [PATCH] libxl: suppress device assignment to HVM guest when there is no IOMMU

["Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>]

Jan Beulich wrote on 2013-07-02:
>>>> On 02.07.13 at 04:27, "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx> wrote:
>>>> George Dunlap wrote on 2013-07-01: # xl pci-assignable-list #
>>>> 
>>>> In other words, the xenstore stuff is still happening.
>> Still got confused. If no IOMMU, why there will have device assignable?
>> But I think there may no good way to solve it since pci-assignalbe-list
>> don't need IOMMU's intercept. Perhaps we should show whether IOMMU is
>> enabled with 'xl pci-assignable-list ' to let user know more earlier.
> 
> Pass-through to PV guests doesn't require an IOMMU (but of course
> it's not secure without one).
The message is only for HVM case, user can just ignore it if he want to try PV 
guest pass through.

Best regards,
Yang



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