From mboxrd@z Thu Jan  1 00:00:00 1970
From: Anthony Liguori <anthony@codemonkey.ws>
Subject: Re: [PATCH] VT-d: Fix iommu map page for mmio pages
Date: Thu, 25 Sep 2008 10:04:20 -0500
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Cc: "Han, Weidong" <weidong.han@intel.com>, kvm@vger.kernel.org,
	Amit Shah <amit.shah@redhat.com>,
	"Kay, Allen M" <allen.m.kay@intel.com>, benami@il.ibm.com
To: Avi Kivity <avi@redhat.com>
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Avi Kivity wrote:
> Han, Weidong wrote:
>> Is it possible DMA into an mmio page? 
>
> I don't see why not.

Yeah, it is.  I mentioned this a long time ago.  We definitely need to 
map mmio pages into the VT-d mapping.

Regards,

Anthony Liguori

>> If yes, we also need to map mmio
>> pages, and is_mmio_pfn() check is not neccessary here.
>>   
>
> So we get simpler code as well.
>