[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [RFC] MM: stub domains and page ownership for mapping in dom0
On 6/3/08 18:52, "Samuel Thibault" <samuel.thibault@xxxxxxxxxxxxx> wrote: > In the case of an ioemu stubdomain with SDL or vnc server running in > dom0, we want to have the stubdomain expose the HVM guest's video RAM > through PVFB. > > However, to map the pages from dom0, xenfb uses xc_map_foreign_pages > with the stubdomain ID as domid (since that is what is advertised in > the PVFB protocol, and needed for other parts of the protocol), and > thus get_page_from_l1e() complains because the stubdomain is not the > owner of the pages. In such case, this patch checks that the stubdomain > has privileges on the actual owner of the pages, and then accept the > mapping. > > Any red flag? Really pvfb protocol should be using grants for foreign mappings. Didn't Pat Campbell have a patch for that? This patch is probably a reasonable stopgap however. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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