From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@citrix.com>
Subject: Re: PCI Passthrough ARM Design : Draft1
Date: Wed, 17 Jun 2015 13:57:46 +0100
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To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Ian Campbell <ian.campbell@citrix.com>
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	Vijaya" <Vijaya.Kumar@caviumnetworks.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, Stefano Stabellini <stefano.stabellini@citrix.com>, "Kulkarni,
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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