Nick Piggin <npiggin@xxxxxxx> wrote: > Unfortunately, not all architectures can spare a bit in the pte for this. So > add an ifdefs, depending on whether the arch can support it or not. Although > pte_special can remove all restrictions that pfn mappings currently have, we > continue to enforce those restrictions even on architectures that have the new > pte bit, for consistency. FRV has a single bit to spare in its PTEs (xAMPRx_RESERVED13) that you could use. MN10300 (which is currently lurking in the -mm tree) has no spare bits unless I can drop either the PAGE_ACCESSED or PAGE_NX bits. David - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
