Benjamin Herrenschmidt writes: > > > For a 64K page size kernel, we have 3 level page tables and we use 3 > > > caches: a PGD pages are 128 bytes (yeah, not big heh...), our pmd > > > pages are 32K (half a page) and PTE pages are PAGE_SIZE (64K). > > > > Ok so use quicklists for the PTEs and slab for the rest? A PGD of only 128 > > bytes? Stuff one at the end of the mm_struct or the task struct? That way > > you can avoid allocation overhead. > > Yeah, maybe... I need to think about it a bit more. I might be able to > make the PMD a full page too.
There was a reason for making the PMD level map 256MB. I'd have to remember what that was and make sure it didn't apply any more first... Paul. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
