Re: [Xen-devel] PCI Passthrough ARM Design : Draft1

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 17/06/15 13:53, Stefano Stabellini wrote:
>> That's for guests, for dom0 Xen also need to be aware of changes to the
>> BAR registers of the real physical devices since it needs to know the
>> real hardware values in order to point guest p2m mappings at them.
> 
> I think that in the Dom0 case, we want to map them 1:1.

MMIO are always mapped 1:1 in DOM0. This is actually already done by Xen.

Regards,

-- 
Julien Grall

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