DragonFlyBSD Gets NX Bit Support
Written by Michael Larabel in BSD on 4 April 2017 at 06:05 AM EDT. 1 Comment
BSD --
While NX bit has been around for many years with AMD64 for marking page tables as no-execute or not, the DragonFlyBSD kernel is now only making use of it.

DragonFly lead developer Matthew Dillon yesterday added NX bit support to the kernel along with a follow-up commit so it's now able to support marking select page tables as non-executable. In searching through Git this does appear to be the first time DragonFly has worked on NX/XD bit support (the no-execute bit support in Linux has been done since around the Linux 2.6 days).

For fresh DragonFlyBSD benchmarks, see yesterday's 8-way Linux/BSD comparison.
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