The PROT_WRITE tweak is interesting. Being able to enforce a bit of Write XOR Execute behavior in Write OR Execute arenas is nifty. It took this change for me t

The PROT_WRITE tweak is interesting. Being able to enforce a bit of Write XOR Execute behavior in Write OR Execute arenas is nifty. It took this change for me to read into W^X and exactly what it entailed because my naive understanding was that the new no-syscall-from-writeable-page behavior would be almost identical in effect to the strict W^X behavior.