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[Xen-devel] IOMMU support for HVM grant table mappings
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| Subject: | [Xen-devel] IOMMU support for HVM grant table mappings |
| From: | "Justin T. Gibbs" <gibbs@xxxxxxxxxxx> |
| Date: | Wed, 13 Jan 2010 15:00:33 -0700 |
| Delivery-date: | Wed, 13 Jan 2010 14:00:54 -0800 |
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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 |
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