| Date | Wed, 15 Dec 2010 13:43:59 +0000 | From | Stefano Stabellini <> | Subject | Re: [PATCH 00/11] xen: allow usermode to map granted pages |
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On Wed, 15 Dec 2010, Stefano Stabellini wrote: > Hi all, > this patch series introduces the gntdev device that allows usermode > to map granted pages; gntdev is used by qemu to implement Xen backends > in userspace. > > Considering that granted pages still have the same entry in the m2p > as before being granted, the following patches also add a mechanism to > override portions of the m2p so that we can find out the pfn > corresponding to the mfn of a granted page in the "receiver" domain. > This is needed so that we can have pte_page work correctly for these > pages. Once this requirement is satisfied, __get_user_pages_fast can > work on granted pages and userspace applications (the xen block backend > implemented in qemu) can use AIO on them. > >
I forgot to add that a branch with this series based on 2.6.37-rc5 is available here:
git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 2.6.37-rc5-gntdev-2
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