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

AArch64/ARM64 Linux Kernel Work Still Ongoing

Linux Kernel

Published on 16 August 2012 08:49 AM EDT
Written by Michael Larabel in Linux Kernel
1 Comment

The ARMv8 64-bit architecture enablement, officially known as AArch64, is still ongoing for the Linux kernel.

Back in early July were the initial Linux kernel patches for AArch64. The initial code drop consisted of about 23,000 lines of code to enable this 64-bit ARMv8 support in Linux. More on the AArch64/ARMv8 Linux enablement was talked about last month at Debian's DebConf 12.

The AArch64 Linux kernel port wasn't merged into the Linux 3.6 kernel as some would have hoped, the code is still being touched. Catalin Marinas of ARM Holdings published the "v2" patch-set this week for the AArch64 architecture enablement. While AArch64 is what ARM prefers to officially call their 64-bit architecture, in this second version of the patches the code is now living in the "arch/arm64" directory and the architecture functions are also using the "amd64" name, per comments on the original patches that some kernel developers didn't like the "AArch64" name. However, via uname and elsewhere, this ARM 64-bit architecture will continue to be referred to as AArch64.

Aside from some AArch64 -> ARM64 renaming, NO_BOOTMEM is now enabled, mem= can be used as a kernel parameter for limiting the amount of memory rather than memory banks, support for ZONE_DMA32, a generic debconfig file is available, and there's various clean-ups and bug-fixes.

The 31 patches amounting to over 22,000 lines of new Linux kernel architecture code can be found on LKML.org. We'll see within a few months time whether the ARMv8 AArch64 kernel code will be ready for merging into the Linux 3.7 kernel.

Meanwhile, other AArch64/ARMv8 Linux work is still in progress as well such as enabling ARMv8 compiler support for GCC.

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. AMD's New Athlon/Semprons Give Old Phenom CPUs A Big Run For The Money
  2. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  3. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
  4. Mini-Box M350: A Simple, Affordable Mini-ITX Case
Latest Linux Articles
  1. How Much Video RAM Is Needed For Catalyst R3 Graphics?
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Cloud Benchmarks
  3. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  4. AMD OpenCL Performance With AM1 Kabini APUs
Latest Linux News
  1. OpenELEC 4.0 Beta 6 Works On 4K Graphics, RPi ALSA
  2. Linux 3.15 Lands Some DRM Graphics Driver Fixes
  3. AMD Is Disabling DPM Support For RV770 GPUs
  4. ReactOS Working On A Community Windows OS
  5. Borderlands Is Being Considered For Linux
  6. Mesa 10.0 & 10.1 Stable Get Updated
  7. Getting Hit By The Variable Performance Of The Public Cloud
  8. Git 2.0 Test Releases Begin With Many Changes
  9. Wine 1.7.17 Works On Its Task Scheduler, C Run-Time
  10. The Improv ARM Board Still Isn't Shipping; Riding A Dead Horse?
  11. Debian To Maintain 6.0 Squeeze As An LTS Release
  12. Wasteland 2 Is Finally Released For Linux Gamers
Latest Forum Discussions
  1. The GNOME Foundation Is Running Short On Money
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Catalyst 14.3 Beta
  4. Suggestions about how to make a Radeon HD 7790 work decently?
  5. Radeon 8000M problematic on Linux?
  6. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  7. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  8. Suspected PHP Proxy Issue