On Thu, 2007-12-13 at 15:14 -0800, Christoph Lameter wrote: > On Fri, 14 Dec 2007, Benjamin Herrenschmidt wrote: > > > We have a separate batch to store page table pages with an RCU head on > > it, we fire it off when it's full or when tlb gather is complete. > > full? You need to wait otill the tlb gather is complete.
No, we fire it off with RCU, we don't need to wait for TLB gather to be complete. All we care about is sync with other CPUs doing a page table walk and it's enough for us. We do -not- need to synchronize with TLB invalidations and we don't use IPIs for those anyway. Ben. -- 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/