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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2018-07-31 00:06:42 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2018-08-07 12:38:04 +0300
commit30f1a9f53e77e4c9ddf55ebfda8a9d7666e46964 (patch)
tree6696057d0c4cb95671a65cad2df8f9b573a0ed6d /lib/mpi/mpi-pow.c
parente0bd888dc487e0c444ee5f3bf55020862d16a225 (diff)
downloadlinux-30f1a9f53e77e4c9ddf55ebfda8a9d7666e46964.tar.xz
crypto: arm64/aes-ce-gcm - don't reload key schedule if avoidable
Squeeze out another 5% of performance by minimizing the number of invocations of kernel_neon_begin()/kernel_neon_end() on the common path, which also allows some reloads of the key schedule to be optimized away. The resulting code runs at 2.3 cycles per byte on a Cortex-A53. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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