On Fri, 2014-04-25 at 11:37 +1000, Benjamin Herrenschmidt wrote: > On Thu, 2014-04-24 at 16:46 -0700, Linus Torvalds wrote: > > - we do the TLB shootdown holding the page table lock (but that's not > > new - ptep_get_and_flush does the same > > > > The flip side is that we do a lot more IPIs for large invalidates, > since we drop the PTL on every page table page. Oh I missed that your patch was smart enough to only do that in the presence of non-anonymous dirty pages. That should take care of the common case of short lived programs, those should still fit in a single big batch. Cheers, Ben. -- 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
