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Re: [Xen-devel] IOMMU support for HVM grant table mappings
| To: | "gibbs@xxxxxxxxxxx" <gibbs@xxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] IOMMU support for HVM grant table mappings |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 14 Jan 2010 09:30:36 +0000 |
| Cc: | |
| Delivery-date: | Thu, 14 Jan 2010 01:30:56 -0800 |
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| Thread-topic: | [Xen-devel] IOMMU support for HVM grant table mappings |
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It's probably an oversight. -- Keir On 13/01/2010 22:00, "Justin T. Gibbs" <gibbs@xxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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