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

NVIDIA Still Working On Linux 3.11+ Support

NVIDIA

Published on 02 November 2013 09:42 AM EDT
Written by Michael Larabel in NVIDIA
17 Comments

In mid-October I had written how AMD's Catalyst driver surprisingly beat NVIDIA to modern Linux support. While NVIDIA is usually first to support new kernel releases, AMD won in shipping "out of the box" Linux 3.11 and 3.12 compatibility. NVIDIA, however, has devised a workaround and will be coming up with a more proper long-term solution.

NVIDIA outlined the issue pertaining to supporting the Linux 3.11 kernels and newer in a NVIDIA DevTalk posting this week. The blocker for 3.11 support comes down to num_physpages having been removed from the Linux 3.11 kernel and the replacement function not being an effective solution for NVIDIA.

NVIDIA's driver needs to be able to determin that all allocatable memory to the driver can be accessed by the GPU, but with this 3.11 change, that's no longer easily possible for determining the highest allocatable system memory address. NVIDIA is working on a proper solution but for now they've published a patch and are working on integrating this workaround into upcoming driver releases.

The patch provides limited support for 3.11+ by being more aggressive about falling back to a 32-bit DMA zone. This workaround will be used until a more appropriate solution has been developed. With this workaround, only users of systems with extremely large system memory capacities (128GB+ of RAM) could run into problems.

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. VirtualBox 5.0 RC3 Brings VMM Fixes, Takes Care Of Some KDE DnD Problems
  2. Ubuntu Is Finally Fixing Its Annoying GRUB Setting
  3. Firefox 39.0 Brings New Features, HTML5 Changes
  4. OPNsense 15.7 Released As Fork Of Pfsense
  5. The Less-Powerful Intel Compute Stick With Ubuntu Will Soon Ship
  6. Kodi 15.0 Release Candidate 1 Arrives
  7. Fedora 23: Python 3 Default Approved; Netizen Spin Rejected
  8. GNOME Shell & Mutter Just Landed More Wayland Improvements
  9. Ubuntu MATE Announces A Partnership With A PC Hardware Vendor
  10. Linux 4, GCC v. Clang & Vulkan Were Among The Hot Stories So Far This Year
Latest Articles & Reviews
  1. 6-Way File-System Comparison On The Linux 4.1 Kernel
  2. How KDE VDG Is Trying To Make Open-Source Software Beautiful
  3. Attempting To Try Out BCache On The Linux 4.1 Kernel
  4. CompuLab's Fitlet Is A Very Tiny, Fanless, Linux PC With AMD A10 Micro
Most Viewed News This Week
  1. Kubuntu 15.10 Could Be The End Of The Road
  2. KDBUS Won't Be Pushed Until The Linux 4.3 Kernel
  3. Pinos Is For Linux Video What PulseAudio Is For Audio
  4. The State & Complications Of Porting The Unity Editor To Linux
  5. The Staging Pull For Linux 4.2: "Big, Really Big"
  6. Latest Rumor Pegs Microsoft Wanting To Buy AMD
  7. "PulseVideo" Coming To Complement PulseAudio?
  8. Exciting Features Merged So Far For The Linux 4.2 Kernel