On 09/20/2017 05:02 PM, Tycho Andersen wrote: > ...and makes it easier to pair tlb flushes with changing the > protections. I guess we still need the for loop, because we need to > set/unset the xpfo bits as necessary, but I'll switch it to a single > set_kpte(). This also implies that the xpfo bits should all be the > same on every page in the mapping, which I think is true. FWIW, it's a bit bonkers to keep all this duplicate xpfo metadata for compound pages. You could probably get away with only keeping it for the head page. -- 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>
