Linux 3.20 To Fully Support The IBM z13

Written by Michael Larabel in Hardware on 11 February 2015 at 08:19 AM EST. 9 Comments
Last month IBM announced the z13 micro-processor for their z13 mainframe computers. IBM claims the z13 is the "world's fastest microprocessor" and now with Linux 3.20 there's full support.

The z13 chip is a 5GHz octa-core processor while each mainframe can handle up to 141 processor cores, up to 10TB of RAIM memory, up to 320 separate I/O channels, and support for up to 8,000 virtual machines per system.. The z13 mainframes are a beast and now there's adequate support with the Linux 3.20 kernel.

The z13 support is coming via the s390 pull request. The s390 pull has the kernel build option for the z13 along with SMT support, cache snonym avoidance, CES5S crypto adapter support, and other z13 changes. There's also other s390 architecture changes via this pull request so hit up this link if you wish to learn more. If you're curious to learn more about the IBM z13, see the data sheet.
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Michael Larabel is the principal author of 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 automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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