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

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 Hardware Reviews
  1. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. FreeBSD Plans For The Next Ten Years
  2. Qt 5.4 Planned For Release On 9 December
  3. Meizu's Ubuntu Phone Not Expected Until Early Next Year
  4. DragonFlyBSD 4.0 Drops i386 Support, Improves Graphics
  5. Expensive "Free/Libre Software Laptop" Uses A NVIDIA GPU
  6. QEMU 2.2-rc3 Released, Final Release Pushed Back By Couple Days
  7. 64-bit ARM FreeBSD Support Is Taking Shape
  8. GCW Zero Starts Seeing New Game Releases
  9. Intel's Cherry Trail Delayed To Next Year
  10. Bq Introduces More Android Devices, But Still No Ubuntu Phones
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Hurrican SDL Port
  3. Roadmap to Catalyst 14.10 ?
  4. how to configure module phoromatic ?
  5. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  6. Debian Developer Resigns From The Systemd Maintainership Team
  7. Cant get working Kaveri APU - A10-7850k
  8. Script for Fan Speed Control