On 06/04/2015 06:02 AM, Xishi Qiu wrote: > Add a new interface in path /proc/sys/vm/mirrorable. When set to 1, it means > we should allocate mirrored memory for both user and kernel processes. That's a pretty dangerously short name. :) How would this end up getting used? It seems like it would be dangerous to use once userspace was very far along. So would the kernel set it to 1 and then let (early??) userspace set it back to 0? That would let important userspace like /bin/init get mirrored memory without having to actually change much in userspace. This definitely needs some good documentation. Also, if it's insane to turn it back *on*, maybe it should be a one-way trip to turn off. -- 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>