From: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Date: Sat, 13 Apr 2013 10:46:50 +0000 (+0300)
Subject: crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~57^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf1521a1a5e21fd1e79a458605c4282fbfbbeee2;p=pandora-kernel.git

crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher

Patch adds AVX2/x86-64 implementation of Twofish cipher, requiring 16 parallel
blocks for input (256 bytes). Table look-ups are performed using vpgatherdd
instruction directly from vector registers and thus should be faster than
earlier implementations. Implementation also uses 256-bit wide YMM registers,
which should give additional speed up compared to the AVX implementation.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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