Marcelo Tosatti wrote: > Hypercall based pte updates are faster than faults, and also allow use > of the lazy MMU mode to batch operations. > > Don't report the feature if two dimensional paging is enabled. > > Signed-off-by: Marcelo Tosatti <[EMAIL PROTECTED]> > +/* > + * We only need to hook operations that are MMU writes. We hook these so > that > + * we can use lazy MMU mode to batch these operations. We could probably > + * improve the performance of the host code if we used some of the > information > + * here to simplify processing of batched writes. > + */ >
One option is, if the guest promises never to write to a page table directly, is to avoid write protecting guest page tables. I think the shadow code can handle it (since the gfn/spte relationship is maintained by shadow code, and doesn't require reading the guest page tables), but am not sure. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- 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
