crypto: blowfish - disable AVX2 implementation · edb7c7cdba - Gogs

crypto: blowfish - disable AVX2 implementation

It appears that the performance of 'vpgatherdd' is suboptimal for this kind of
workload (tested on Core i5-4570) and causes blowfish-avx2 to be significantly
slower than blowfish-amd64. So disable the AVX2 implementation to avoid
performance regressions.

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

Jussi Kivilinna 12 years ago

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edb7c7cdba

1 changed files with 1 additions and 0 deletions

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crypto/Kconfig
							 
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				@@ -823,6 +823,7 @@ config CRYPTO_BLOWFISH_X86_64
			
				 config CRYPTO_BLOWFISH_AVX2_X86_64
			
				 	tristate "Blowfish cipher algorithm (x86_64/AVX2)"
			
				 	depends on X86 && 64BIT
			
				+	depends on BROKEN
			
				 	select CRYPTO_ALGAPI
			
				 	select CRYPTO_CRYPTD
			
				 	select CRYPTO_ABLK_HELPER_X86