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Backport AVX2 AES-GCM implementation from BoringSSL

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This uses the AVX2 versions of the AESENC and PCLMULQDQ instructions; on
Zen 3 this provides an up to 80% performance improvement.

Original source:
https://github.com/google/boringssl/blob/d5440dd2c2c500ac2d3bba4afec47a054b4d99ae/gen/bcm/aes-gcm-avx2-x86_64-linux.S

See the original BoringSSL commit at
https://github.com/google/boringssl/commit/3b6e1be4391d96e81cee022f77f7bab85d51cf4e.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Attila Fülöp <attila@fueloep.org>
Signed-off-by: Joel Low <joel@joelsplace.sg>
Closes #17058
This commit is contained in:
Joel Low
2025-02-15 11:37:33 +08:00
committed by Brian Behlendorf
parent 885d929cf8
commit bb9225ea86
15 changed files with 3574 additions and 82 deletions
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module/icp/algs/modes/modes.c
+1 -1
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@@ -171,7 +171,7 @@ gcm_clear_ctx(gcm_ctx_t *ctx)
explicit_memset(ctx->gcm_remainder, 0, sizeof (ctx->gcm_remainder));
explicit_memset(ctx->gcm_H, 0, sizeof (ctx->gcm_H));
#if defined(CAN_USE_GCM_ASM)
if (ctx->gcm_use_avx == B_TRUE) {
if (ctx->impl != GCM_IMPL_GENERIC) {
ASSERT3P(ctx->gcm_Htable, !=, NULL);
explicit_memset(ctx->gcm_Htable, 0, ctx->gcm_htab_len);
kmem_free(ctx->gcm_Htable, ctx->gcm_htab_len);