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The ARMv7 NEON module is explicitly built in ARM mode, which is not
supported by the Thumb2 kernel. So remove the explicit override, and
leave it up to the build environment to decide whether the core SHA1
routines are assembled as ARM or as Thumb2 code.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This tweaks the SHA-1 NEON code slightly so it works correctly under big
endian, and removes the Kconfig condition preventing it from being
selected if CONFIG_CPU_BIG_ENDIAN is set.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This patch adds ARM NEON assembly implementation of SHA-1 algorithm.
tcrypt benchmark results on Cortex-A8, sha1-arm-asm vs sha1-neon-asm:
block-size bytes/update old-vs-new
16 16 1.04x
64 16 1.02x
64 64 1.05x
256 16 1.03x
256 64 1.04x
256 256 1.30x
1024 16 1.03x
1024 256 1.36x
1024 1024 1.52x
2048 16 1.03x
2048 256 1.39x
2048 1024 1.55x
2048 2048 1.59x
4096 16 1.03x
4096 256 1.40x
4096 1024 1.57x
4096 4096 1.62x
8192 16 1.03x
8192 256 1.40x
8192 1024 1.58x
8192 4096 1.63x
8192 8192 1.63x
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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