Comment by CharlesMerriam2

I guess I've never understood this. The W^X is a response to one of the classic Multics paper attacks, but doesn't actually work well in a world where JavaScript, JVM byte code, and other non-native code is "sort-of executable". Why not put the effort into a great MMU so that every allocation is its own "page" for the purpose of triggering page faults on overruns?