crypto: arm/aes-ce - switch to 4x interleave

Browse source

When the ARM AES instruction based crypto driver was introduced, there
were no known implementations that could benefit from a 4-way interleave,
and so a 3-way interleave was used instead. Since we have sufficient
space in the SIMD register file, let's switch to a 4-way interleave to
align with the 64-bit driver, and to ensure that we can reach optimum
performance when running under emulation on high end 64-bit cores.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

...

This commit is contained in:

Ard Biesheuvel 2019-09-03 09:43:25 -07:00 • committed by Herbert Xu

parent 46a22776bc

commit 1dede02bdd

1 changed files with 144 additions and 119 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

263

arch/arm/crypto/aes-ce-core.S

View file