Mesa 19.2.6 Released Due To POWER Fallout
Written by Michael Larabel in Mesa on 22 November 2019 at 12:41 AM EST. 9 Comments
MESA --
Mesa 19.2.5 was just released earlier this week but now v19.2.6 has already been released due to the previous point release breaking IBM POWER builds.

Mesa 19.2.5 brought support on PowerPC 64-bit in LLVMpipe for using LLVM's large code model for JIT-compiled shaders since for large processes like GNOME Shell and Firefox there could be address space issues with the medium/small code models. Using that larger code model doesn't bring any measurable hit to the LLVMpipe performance but the commit introduced some problems when it was back-ported to the Mesa 19.2 series.

Mesa 19.2.5 ended up introducing a compile error on PPC64LE due to the change but that's now been addressed and warranted the immediate 19.2.6 release. Mesa does have continuous integration to try to avoid broken releases, but to date that is mostly focused on x86_64 (and to a growing but lesser extent, ARM). Most of Mesa's CI efforts are driven by Intel's robust hardware labs and resources.

Mesa 19.2.6 also picked up a few fixes to Broadcom V3D and a couple other mundane changes in the short time since Mesa 19.2.5. The list of Mesa 19.2.6 changes can be found via Mesa-dev.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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