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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-06-08 12:17:47 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-06-21 14:44:29 +0800 |
| commit | 99f42f937a080995b34e1ed75ed6934b5f96f9ca (patch) | |
| tree | 1a9c3482104dd4d99dfc1b839c02678b6a550a53 /crypto/algif_hash.c | |
| parent | 3d387ef08c40382315b8e9baa4bc9a07f7c49fce (diff) | |
| download | lwn-99f42f937a080995b34e1ed75ed6934b5f96f9ca.tar.gz lwn-99f42f937a080995b34e1ed75ed6934b5f96f9ca.zip | |
Revert "crypto: twofish - add AVX2/x86_64 assembler implementation of twofish cipher"
This reverts commit cf1521a1a5e21fd1e79a458605c4282fbfbbeee2.
Instruction (vpgatherdd) that this implementation relied on turned out to be
slow performer on real hardware (i5-4570). The previous 8-way twofish/AVX
implementation is therefore faster and this implementation should be removed.
Converting this implementation to use the same method as in twofish/AVX for
table look-ups would give additional ~3% speed up vs twofish/AVX, but would
hardly be worth of the added code and binary size.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algif_hash.c')
0 files changed, 0 insertions, 0 deletions