crypto: arm64/aes-ce-gcm - don't reload key schedule if avoidable

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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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Ard Biesheuvel 2018-07-30 23:06:42 +02:00 • committed by Herbert Xu

parent e0bd888dc4

commit 30f1a9f53e

2 changed files with 49 additions and 41 deletions

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9

arch/arm64/crypto/ghash-ce-core.S

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83

arch/arm64/crypto/ghash-ce-glue.c

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