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 Articles & Reviews
  1. GeForce GTX 750 Series: Nouveau vs. NVIDIA Linux Driver Performance
  2. GLAMOR + RadeonSI 2D Acceleration Is Quite Good For Open-Source AMD 2D Performance
  3. AMD Radeon R9 290 OpenGL On Ubuntu 15.04: Catalyst vs. RadeonSI Gallium3D
  4. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  5. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  6. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
Latest Linux News
  1. Libinput 0.15 Adds New Debug Events Utility
  2. Qt 5.5 Beta Is Coming Soon, Snapshot Released
  3. Steam Linux Usage Drops Below 1%
  4. Many OpenGL ES 3.1 Commits Land In Mesa
  5. HHVM 3.7 Brings More Performance Improvements
  6. Experimental DragonFlyBSD Code Adds Broadwell Graphics
  7. Virt-Manager 1.2.0 Brings OVMF/AAVMF Support For UEFI In VMs
  8. Interesting GSoC 2015 Projects: Wine D3DRM, GameStream, NaCL Fun
  9. An Ubuntu Phone Will Ship This Year With The Converged Unity Experience
  10. Ubuntu 15.10 Is Codenamed The Wily Werewolf
Most Viewed News This Week
  1. Trying Out Microsoft Visual Studio Code On Linux
  2. Microsoft Releases New Code IDE For Linux!
  3. Improvements On The Way For GNOME's Nautilus File Manager
  4. A Lot Of Improvements Are Coming For Mir 0.13, Including Work Towards Libinput
  5. Kodi 15.0 Beta 1 Released
  6. Mono 4.0 Makes Use Of Microsoft's Open-Source Code, C# 6.0
  7. Wayland 1.8 Alpha Release Delayed
  8. Lucid Sleep Support Is Being Worked On For The Upstream Linux Kernel