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

The DRM Pull Request For The Linux 2.6.39 Kernel

Linux Kernel

Published on 17 March 2011 09:52 AM EDT
Written by Michael Larabel in Linux Kernel
3 Comments

David Airlie has just emailed Linus Torvalds with his main DRM (Direct Rendering Manager) pull request for the Linux 2.6.39 kernel that 2.6.38 was released earlier this week. As was mentioned a few days ago, the Linux 2.6.39 kernel will feature a number of interesting changes to the open-source graphics drivers, among other areas.

When it comes to the Radeon DRM driver in Linux 2.6.39, the main addition this time around is the Cayman GPU support. AMD published the patches earlier this month for Radeon HD 6900 series open-source support in the DRM/KMS driver, but there is currently no 2D/3D/video acceleration support with this code. For the R600 series, there is now tiling support that's enabled (it's already been this way for R300~R500 ASICs) along with predication support.

The Nouveau DRM driver for reverse-engineered open-source NVIDIA GeForce/Quadro support has KMS page-flipping now enabled by default (big performance win!) plus Z-compression. There aren't any other major changes and the GeForce 400/500 "Fermi" support in Nouveau still requires non-free firmware at this point.

Intel's DRM driver has a big i855 fix, output setup re-factoring, and miscellaneous other fixes. There is still no Intel G45 VA-API support. The older Intel i830 DRM driver has also been dropped completely in the Linux 2.6.39 kernel.

Some of the shared core changes to the Direct Rendering Manager in the Linux 2.6.39 kernel is removing the Big Kernel Lock (BKL) need, support for USB DRM drivers (to allow USB graphics devices such as those from DisplayLink), and a generic DRM capabilities ioctl. The TTM (Translation Table Maps) kernel memory manager for the Radeon and Nouveau drivers now has Xen Dom0 support. The TTM support in Xen Dom0 was worked on by Oracle back in January.

David's 2.6.39 DRM pull request can be found on the dri-devel mailing list.

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. Acer B286HK: A 28-inch UHD LED 4K Monitor For As Low As $350
  2. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  3. Intel 120GB 530 Series SSD Linux Performance
  4. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
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. NVIDIA Posts Tegra Gallium3D Patch For K1+ Support
  2. Ubuntu 14.10 MacBook Air Tests With Linux 3.18, Mesa 10.5
  3. AMD Richland APU Support Added To Coreboot
  4. 2014 Holiday Shopping Reminder, Happy Thanksgiving
  5. Python 3 Support Added To The GNOME Shell
  6. ReactOS Lands Its New Explorer Shell
  7. Weston's IVI Shell Sees New Version
  8. IMP Launches As Another Open-Source Computer Attempt
  9. Git 2.2.0 Released With 550+ Changes
  10. GNOME 3.15.2 Released
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