| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 0 of 5] Add support for mapping grant references into HVM guests (+ some cleanup) |
| From: | "Justin T. Gibbs" <gibbs@xxxxxxxxxxx> |
| Date: | 2010年1月08日 16:43:38 -0700 |
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On 12/18/2009 9:05 AM, Keir Fraser wrote:
I have successfully integrated the 4.0 change into my 3.4.1 test system. The changes works as expected so long as the I/O is serviced via a copy from memory owned by the device domain. However, iommu mappings are not updated for HVM grant table updates so it is not possible to use DMA. I am experimenting with changes to update the iommu for p2m_grant_map* types but wonder is some overarching architectural consideration I'm missing that would explain why the iommu was not updated in the originalSupport is already in the tree and will be part of Xen 4.0. See xen-unstable changeset 19932:c0cb307d927f. -- Keir
changes? -- Justin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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