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

Intel PPGTT Called Upon For Pulling Into The Kernel

Intel

Published on 07 December 2013 08:48 AM EST
Written by Michael Larabel in Intel
Comment On This Article

Ben Widawsky has been working on PPGTT support for a while now with the open-source Intel Linux graphics driver and he's now called upon for the support to be pulled into the next kernel release.

PPGTT is short for the Per-Process Graphics Translation Tables. PPGTT is a feature supported by Intel's Ivy Bridge, Haswell, and Broadwell graphics processors for enabling GPU process isolation. This enhances the security by providing a per file descriptor address space / context.

Every context gets its own address space and every open DRM fd gets its own context, which means better security and correctness, while there's some other minor driver-level advantages but the performance isn't expected to be hugely different.

Per-Process Graphics Translation Tables support will also require minor changes to the Intel graphics driver user-space components, which will likely happen only after the kernel-side changes have landed. The PPGTT support looks like it's finally baked for going into the Linux 3.14 kernel so the libdrm, Mesa, xf86-video-intel, and intel-gpu-tools changes will follow.

Landing PPGTT support is quite huge as it's taken several months of work by Ben Widawsky and other Intel Open-Source Technology Center developers. The work is spread across 47 patches that touch more than one thousand lines of the i915 DRM driver code in total.

The pull request with additional information on Per-Process Graphics Translation Tables can be found via the intel-gfx 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. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. Fedora 21 Alpha First Impressions: It's Great
  2. Counter-Strike: Global Offensive NVIDIA/AMD Benchmarks On Linux
  3. A Tour Of The New Phoronix Office
  4. 7-Way Linux Desktop Gaming Comparison On Ubuntu 14.10
Latest Linux News
  1. ACPI On ARM: Good Or Bad For Linux?
  2. Oracle & Canonical Collaborate Over Their Competing Linux OSes On OpenStack
  3. Google Brings Coreboot To 64-bit ARM
  4. Debian Switches Back To GNOME As Its Default Desktop
  5. Fedora 21 Alpha Finally Sees The Light Of Day
  6. Qt 5.4 Will Support Applications Under A Wayland Compositor
  7. Valve Rolls Out A New Steam Storefront
  8. The Features Coming For Fedora 21
  9. Counter-Strike: Global Offensive Starts Rolling Out To Linux Users
  10. The Gestures Support Of GNOME 3.14
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Uselessd: A Stripped Down Version Of Systemd
  3. Wasteland 2 Officially Launched Today, Including For Linux Gamers
  4. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  5. NVIDIA GTX 770/780 -works ?
  6. State of Nouveau now and in the near future?
  7. New stress testing utility for GPU's
  8. How to get Catalyst 14.4 working on Ubuntu 14.04