On 5/12/07 20:15, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx> wrote: > In 2.6.18-xen the only two implementations of zap_pte are > blktap_clear_pte and gntdev_clear_pte. Given a ptep with the > grant-mapping bit set, could we determine which of these need calling > and do the appropriate thing? Do we even need separate implementations > of the core pte-clearing functionality? Could we just say something like: > > if (pte & _PAGE_XEN_FOREIGN) > HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, ...); > else > xen_set_pte_at(...); You'd need to track pte->grant_handle mappings somewhere, but it could certainly be done this way, yes. -- Keir _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
