1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Memory Protection Extensions Not Done For Linux 3.14

Linux Kernel

Published on 21 January 2014 01:46 AM EST
Written by Michael Larabel in Linux Kernel
5 Comments

The Intel MPX support, a feature of next year's "Skylake" processors, isn't yet done for the Linux kernel but the early infrastructure work will land with the Linux 3.14 kernel.

Submitted on Monday by Peter Anvin for the Linux 3.14 merge window is the basic infrastructure work for Memory Protection Extensions, a feature coming to Intel CPUs beginning with next year's Skylake -- not to be confused with the Broadwell CPUs shipping in a few months.

MPX is a new x86 instruction extension and set of registers that bring greater security through checking pointer references for fending off buffer overflows.

Intel MPX isn't just implemented as a kernel feature but also requires changes to the compiler and run-time libraries.

For those not familiar with Intel Memory Protection Extensions I had written about MPX support still baking for Linux earlier this month.

The initial MPX kernel work was part of the x86/cpufeature pull request and introduces the basic kernel infrastructure for this feature. This pull request doesn't provide MPX support itself but just the basic support. This early support was landed for the KVM support for MPX that is expected to land later in the 3.14 merge window.

More details on this early kernel work for Intel MPX can be found via this pull request.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Articles & Reviews
  1. Intel Broadwell: GCC 4.9 vs. LLVM Clang 3.5 Compiler Benchmarks
  2. Ubuntu vs. Fedora Linux On Lenovo's X1 Carbon With Core i7 Broadwell
  3. Ubuntu 15.04 Is The Easy Path To Better Performance On Intel Broadwell
  4. NVIDIA's Latest Maxwell Line-Up Against AMD With Catalyst On Linux
  5. Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell
  6. AMD FX-8320E Performance On Linux
Latest Linux News
  1. Linux Benchmarking... Even Faster & A Very Interesting February
  2. Does VirtualBox VM Have Much A Future Left?
  3. HAMMER2 File-System Is Still Slowly Coming Together
  4. The Better Looking Window Decorations For GNOME 3.16
  5. Libinput 0.9 Adds Support For Hovering Fingers On Touchpads
  6. Free Software Foundation Endorses Another (Outdated) Laptop
  7. DNF Plugins Extend The Functionality Of Fedora's Yum Successor
  8. LibreOffice 4.4 Released With Better OOXML Support, UI Improvements
  9. Inkscape 0.91 Goes Through C++ Code Conversion, New Cairo Rendering, OpenMP Filters
  10. New Mesa Patch To Improve CPU-Bound Applications
Most Viewed News This Week
  1. PlayStation 4 System Compiler Support Landing In LLVM
  2. LibreOffice 4.4 Is Coming Soon With New Features
  3. Linux "GHOST" Vulnerability Hits Glibc Systems
  4. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell
  5. LZHAM 1.0 Lossless Data Compression Codec Released
  6. Linux Users Upset By Chromium's Busted HiDPI Support
  7. Vivaldi: A New Chromium-Powered, Multi-Platform Browser
  8. LLVM Adds Options To Do Fuzz Testing