More AVX2 Crypto Optimizations For Linux 3.11
Written by Michael Larabel in Free Software on 5 July 2013 at 03:42 PM EDT. 5 Comments
Recent Linux kernel releases have seen a number of crypto performance optimizations for this kernel subsystem by taking advantage of newer CPU instruction set extensions for accelerating various cryptographic workloads. This theme has continued for Linux 3.11.

Herbert Xu's crypto update for the Linux 3.11 kernel has been merged to mainline. Optiomizations this time around include more work on the AVX2 code-path for Camellia AES-NI acceleration. AVX2 is present in new Intel Haswell CPUs and will allow for faster performance for encrypted disks taking advantage of these new Crypto code-paths.

There's also been new SHA224 and SHA384 shims added for the widely-present SSSE3 instruction set extension. Meanwhile though, defunct Blowfish and Twofish AVX2 implementations have been dropped.

Other Crypto changes include not idling OMAP SoC devices between crypto operations happening in one session, unaligned buffer self-tests, a PCLMULQDQ optimization for CRCT10DIF. and support for FreeScale's DCP co-processor.

More details on these changes can be found via the Linux 3.11 Crypto pull request.
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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 10,000 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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