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| author |   Eric Biggers <ebiggers@kernel.org> | 2025-10-01 19:31:16 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@kernel.org> | 2025-10-26 20:37:41 -0700 |
| commit | 5ab1ff2e0f03ab64cc1832999146c0dcbf9db966 (patch) | |
| tree | 1c209a0e31d64a673eeccd7c1839709a76b2eba0 /tools/testing/selftests/pidfd/git:/ssh:/git@git.zx2c4.com | |
| parent | crypto: x86/aes-gcm - revise some comments in AVX512 code (diff) | |
| download | linux-rng-5ab1ff2e0f03ab64cc1832999146c0dcbf9db966.tar.xz linux-rng-5ab1ff2e0f03ab64cc1832999146c0dcbf9db966.zip | |
crypto: x86/aes-gcm - optimize AVX512 precomputation of H^2 from H^1
Squaring in GF(2^128) requires fewer instructions than a generic
multiplication in GF(2^128). Take advantage of this when computing H^2
from H^1 in aes_gcm_precompute_vaes_avx512().
Note that aes_gcm_precompute_vaes_avx2() already uses this optimization.
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251002023117.37504-8-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Diffstat (limited to 'tools/testing/selftests/pidfd/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions