On Fri, 26 Oct 2012 14:45:02 -0400 Rik van Riel <riel@xxxxxxxxxx> wrote: > Intel has an architectural guarantee that the TLB entry causing > a page fault gets invalidated automatically. This means > we should be able to drop the local TLB invalidation. > > Because of the way other areas of the page fault code work, > chances are good that all x86 CPUs do this. However, if > someone somewhere has an x86 CPU that does not invalidate > the TLB entry causing a page fault, this one-liner should > be easy to revert. This does not strike me as a good standard of validation for such a change At the very least we should have an ACK from AMD and from VIA, and preferably ping RDC and some of the other embedded folks. Given an AMD and VIA ACK I'd be fine. I doubt anyone knows any more what Cyrix CPUs did or cared about and I imagine H Peter or Linus can answer for Transmeta ;-) Alan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>