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 Benchmarking Platform
Phoromatic Test Orchestration

x32 Support For Linux Kernel Called In For Review

Intel

Published on 20 February 2012 08:33 AM EST
Written by Michael Larabel in Intel
34 Comments

The x32 effort, an undertaking to provide a native 32-bit ABI for x86_64 on Linux, is finally moving closer to fruition. Peter Anvin has published the set of x32 patches for the Linux kernel that are now up for review and comments.

Peter Anvin and others have long been working towards Linux x32: a native 32-bit ABI for Intel/AMD 64-bit systems so that applications not needing 64-bit pointers can benefit from 64-bit performance while using the memory foot-print of a 32-bit ABI. The Linux x32 ABI support necessitates changes to GNU binutils, the Linux kernel, Glibc, and the compiler (GCC). On Sunday the set of 30 patches touching around 1,000 lines of code was sent off to the kernel mailing list by Anvin.

Benchmarks by the developers have shown that x32 can be about up to 32% faster than x86_64 in some CPU benchmarks. However, in some cases it can also be slightly slower than x86_64 and/or ia32.

Those not familiar with Linux x32 can learn more from the x32abi Google Site where there are some benchmarks, setup information for building the necessary components and/or using the Gentoo or Fedora versions, and other information on the x32 ABI. The slides from the x32 presentation that Anvin did at least year's Linux Plumbers Conference are also available.

The x32 kernel changes isn't a pull request that Peter sent in with his mailing list message, but rather an RFC (Request For Comments). Anvin acknowledges there are some controversial issues as well as areas of incompleteness, but he's currently looking for review on the changes. Right now the work is based upon the Linux 3.3-rc3 kernel.

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 Linux News
  1. Btrfs In Linux 4.2 Brings Quota Updates, Many Fixes
  2. Latest Rumor Pegs Microsoft Wanting To Buy AMD
  3. The Next-Gen Phoronix Site Experience Is Almost Ready
  4. Exciting Features Merged So Far For The Linux 4.2 Kernel
  5. Mesa 10.6.1 Brings A Bug-Fix For Dota 2 Reborn
  6. DragonFlyBSD 4.2 Released: Brings Improved Graphics & New Compiler
  7. Wine-Staging 1.7.46 Improves The OS X Experience
  8. The State & Complications Of Porting The Unity Editor To Linux
  9. Libreboot Now Supports An AMD/ASUS Motherboard
  10. SafeStack Merged Into LLVM To Protect Against Stack Buffer Overflow Attacks
Latest Articles & Reviews
  1. How KDE VDG Is Trying To Make Open-Source Software Beautiful
  2. Attempting To Try Out BCache On The Linux 4.1 Kernel
  3. CompuLab's Fitlet Is A Very Tiny, Fanless, Linux PC With AMD A10 Micro
  4. AMD A10-7870K Godavari: RadeonSI Gallium3D vs. Catalyst Linux Drivers
Most Viewed News This Week
  1. Kubuntu 15.10 Could Be The End Of The Road
  2. Linus Is Looking Forward To Merging KDBUS, But Not Convinced By Performance
  3. NVIDIA Starts Supplying Open-Source Hardware Reference Headers
  4. KDBUS Won't Be Pushed Until The Linux 4.3 Kernel
  5. Linux 4.2 Kernel Gets Port To New Processor Architecture
  6. The Staging Pull For Linux 4.2: "Big, Really Big"
  7. EXT4 Has Many Cleanups & Fixes For Linux 4.2
  8. SteamOS "Brewmaster" Is Valve's New Debian 8.1 Based Version