crypto: arm64/crct10dif - Remove remaining 64x64 PMULL fallback code

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The only remaining user of the fallback implementation of 64x64
polynomial multiplication using 8x8 PMULL instructions is the final
reduction from a 16 byte vector to a 16-bit CRC.

The fallback code is complicated and messy, and this reduction has
little impact on the overall performance, so instead, let's calculate
the final CRC by passing the 16 byte vector to the generic CRC-T10DIF
implementation when running the fallback version.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Ard Biesheuvel 2024-11-05 17:09:03 +01:00 • committed by Herbert Xu

parent 67dfb1b73f

commit 779cee8209

2 changed files with 68 additions and 194 deletions

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244

arch/arm64/crypto/crct10dif-ce-core.S

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18

arch/arm64/crypto/crct10dif-ce-glue.c

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