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SubjectRe: [PATCH 0/4] crypto: [sha] x86 SHA extension optimization of SHA1 and SHA256
From: Tim Chen <>
Date: Thu, 10 Sep 2015 15:26:52 -0700

> The new x86 SHA extensions provide new hardware accelerated instructions
> for computing SHA1 and SHA256 hashes. This patch series provide the
> assembly routines for SHA1 and SHA256 computation using these new
> instructions to the kernel crypto library. For 4K data blocks, we've
> seen up to 3.6x speedup over existing SSSE3 enhanced routines in the
> kernel crypto library on Broxton platform.
> Refer to SHA extension programming guide in chapter 8.2 of the
> Intel Architecture Instruction Set Extensions Programming reference.
> Pre-req patches:
> [1] [PATCH] sha: Enable cpuid check for Intel SHA extensions implementations
> [2] [Patch] x86/insn: perf tools: Add new SHA instructions

Series looks fine to me:

Acked-by: David S. Miller <>

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