It appears that the performance of 'vpgatherdd' is suboptimal for this kind of
workload (tested on Core i5-4570) and causes twofish_avx2 to be significantly
slower than twofish_avx. So disable the AVX2 implementation to avoid
performance regressions.
Signed-off-by: Jussi Kivilinna <jussi.kivili...@iki.fi>
---
crypto/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index d1ca631..678a6ed 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1318,6 +1318,7 @@ config CRYPTO_TWOFISH_AVX_X86_64
config CRYPTO_TWOFISH_AVX2_X86_64
tristate "Twofish cipher algorithm (x86_64/AVX2)"
depends on X86 && 64BIT
+ depends on BROKEN
select CRYPTO_ALGAPI
select CRYPTO_CRYPTD
select CRYPTO_ABLK_HELPER_X86
--
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