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Intel's GEM Driver Enters Mainline Code

Intel

Published on 08 August 2008 09:42 PM EDT
Written by Michael Larabel in Intel
9 Comments

Following concerns regarding the TTM memory manager, Intel had introduced their own kernel memory manager for graphics processors which they have called GEM, or the Graphics Execution Manager (A Technical Explanation of GEM). Intel's GEM is designed to be easier to implement than Tungsten's TTM that had only lived in the limelight for a short time.

This switching though from TTM to GEM though has caused a few problems (some technical and some political) within the X.Org community. Two examples are X.Org 7.4 losing DRI2 support due to a rework being required over TTM-specific bits and a a new 2D X acceleration architecture based upon EXA but designed to implement GEM.

This memory manager has only been in development for a few months, and Intel has been preparing to merge GEM to master since June, but today they have finally achieved this goal. Two days ago Intel's Eric Anholt had merged the GEM changes to the mainline xf86-video-intel 2D/DDX driver and today he has merged the Intel Mesa 3D component. The Mesa changes consist of changing the Intel i915 driver to using the GEM interfaces for object management.

These GEM-powered components will officially in xf86-video-intel 2.5.0, which will officially ship later this year, and on the 3D side the version will be Mesa 7.1. This Mesa update is due out soon as it's holding up the release of X.Org 7.4 and X Server 1.5.

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 .
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