[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Grant access to more than one dom
Hi all, The system I am implementing has 2 domU: Windows, and realtime, and I need to share memory between them. Originally I had the realtime domU produce a page and which was then consumed by the Windows domU, however given the way that the realtime domU works, this can terminate and restart, which will destroy and invalidate the shared memory page. To simplify things I have written a simple little app that runs in dom0, creates the shared memory page(s) and then starts both the domUs. If either domU stops, it is automatically restarted, but as the shared memory belongs to dom0 it stays stable across restarts. However I now need to share this grant between multiple domUs. As far as I can see the grant ref only allows access from a single dom. How do I work around this? It must be possible, otherwise all driver implementations would require a memcpy by dom0. -- Best regards, Simon mailto:furryfuttock@xxxxxxxxx _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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