On Sat, Mar 01, 2014 at 10:16:50AM +0100, Ingo Molnar wrote: > We read CR2 in the page fault hot path, so it's on the top of CPU > architects' minds and it's reasonably optimized. A couple of cycles > IIRC, but would be nice to hear actual numbers.
Well, going with what Linus found; it looks like they made page faults more expensive on Haswell as compared to previous generations. So its not _that_ high on their list :/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
