From: Keir Fraser <keir.fraser@eu.citrix.com>
To: "gibbs@scsiguy.com" <gibbs@scsiguy.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: IOMMU support for HVM grant table mappings
Date: Thu, 14 Jan 2010 09:30:36 +0000 [thread overview]
Message-ID: <C77494BC.65DB%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <4B4E4281.5040603@scsiguy.com>
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
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
prev parent reply other threads:[~2010-01-14 9:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-13 22:00 IOMMU support for HVM grant table mappings Justin T. Gibbs
2010-01-14 9:30 ` Keir Fraser [this message]
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