]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 323d382) | patch
crypto: arm64/chacha - use combined SIMD/ALU routine for more speed
authorArd Biesheuvel <ard.biesheuvel@linaro.org>
Tue, 4 Dec 2018 13:13:33 +0000 (14:13 +0100)
committerHerbert Xu <herbert@gondor.apana.org.au>
Thu, 13 Dec 2018 10:24:55 +0000 (18:24 +0800)
commita1c3fcd4f87b023dbe2448d9f3d67659c855112a
treeaa1e6ba2142d05e74cdfabf2b581ca57a381b7f4tree | snapshot
parent323d382d0739572b0e7a85cb66694749af6bd728commit | diff
crypto: arm64/chacha - use combined SIMD/ALU routine for more speed

To some degree, most known AArch64 micro-architectures appear to be
able to issue ALU instructions in parellel to SIMD instructions
without affecting the SIMD throughput. This means we can use the ALU
to process a fifth ChaCha block while the SIMD is processing four
blocks in parallel.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
arch/arm64/crypto/chacha-neon-core.S diff | blob | history
arch/arm64/crypto/chacha-neon-glue.c diff | blob | history
Linux Kernel Source Tree.