On Fri, 28 Jan 2005, Rik van Riel wrote: > > The main thing I would really like to preserve is the > space used for "near-NULL" pointer detection. That is, > detection of trying to access a large index in a NULL > pointer array, etc. > > I'd be happy to have some arbitrary value for the lower > boundary...
Almost everything will still have that not-so-near-NULL pointer detection. It only gets limited to a PAGE_SIZE detection extent in the case when the app mmaps as much as it possibly can. I think it should be allowed make that tradeoff. > > arch/ppc64/mm/hugetlbpage.c (odd place to find it) has its own > > arch_get_unmapped_area_topdown, should be given a similar fix. > > Good point, though a 64 bit architecture is, umm, less > likely to run all the way down to zero within our lifetime. I hadn't looked at it that way! Hugh - 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/
