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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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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