On Wed, Jan 23, 2008 at 03:12:36PM +0100, Gerd Hoffmann wrote: > Hi, > > >> That would render the notifies useless for Xen too. Xen needs to > >> intercept the actual pte clear and instead of just zapping it use the > >> hypercall to do the unmap and release the grant. > > > > We are tackling that by having our own page table hanging off the > > structure representing our seg (thing created when we do the equiv of > > your grant call). > > --verbose please. I don't understand that "own page table" trick. Is > that page table actually used by the processor or is it just used to > maintain some sort of page list?
We have a seg structure which is similar to some structure you probably have which describes the grant. One of the things hanging off that seg structure is essentially a page table containing PFNs with their respective flags (XPMEM specific and not the same as the pfn flags in the processor page tables). Thanks, Robin ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
