Requested by and okay rpaulo@.
W^X mappings. Disabled by default. First proposed in: http://mail-index.netbsd.org/tech-security/2005/12/18/0000.html More information in: http://pax.grsecurity.net/docs/mprotect.txt Read relevant parts of options(4) and sysctl(3) before using! Lots of thanks to the PaX author and Matt Thomas.