On Tue, 22 Mar 2005 15:14:54 +1100 Nick Piggin <[EMAIL PROTECTED]> wrote:
> Question, Dave: flush_tlb_pgtables after Hugh's patch is also > possibly not being called with enough range to cover all page > tables that have been freed. > > For example, you may have a single page (start,end) address range > to free, but if this is enclosed by a large enough (floor,ceiling) > then it may free an entire pgd entry. > > I assume the intention of the API would be to provide the full > pgd width in that case? It just wants the range of page tables liberated. I guess essentially PMD_SIZE is the granularity. Anyways, for the record I made it only call flush_tlb_pgtables() when end > start, but instead of that BUG() I now get the BUG() on mm->nr_ptes being non-zero at the end of exit_mmap(). Something is up with the floor/ceiling stuff methinks. It's funny since this code aparently works fine on ia64 which is fully 3-level too. Hmm... - 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/
