From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: IOMMU support for HVM grant table mappings
Date: Thu, 14 Jan 2010 09:30:36 +0000
Message-ID: <C77494BC.65DB%keir.fraser@eu.citrix.com>
References: <4B4E4281.5040603@scsiguy.com>
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It's probably an oversight.

 -- Keir

On 13/01/2010 22:00, "Justin T. Gibbs" <gibbs@scsiguy.com> wrote:

> Xen 4.0 recently added support for grant table mappings in the HVM P2M
> tables.
> The current code explicitly avoids adding an IOMMU mapping in this case.
> Is this an oversight or is there an architectural reason that the IOMMU is
> not updated?  This seems to be the last piece needed to allow HVM driver
> domains with PCI pass-thru devices to function without extra memory copies.
> 
> Thanks,
> Justin
> 
> 
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