On Wednesday 21 February 2007 21:52, Jeremy Fitzhardinge wrote: > Add a set of accessors to pack, unpack and modify page table entries > (at all levels). This allows a paravirt implementation to control the > contents of pgd/pmd/pte entries. For example, Xen uses this to > convert the (pseudo-)physical address into a machine address when > populating a pagetable entry, and converting back to pphys address > when an entry is read. Do you have some lmbench numbers before/after this change? iirc at least fork and exit do a lot of pte accesses in various forms. If it's measurable it might be needed to patch those for the native case. -Andi
