diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0048-crypto-x86-poly1305-emit-does-base-conversion-itself.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0048-crypto-x86-poly1305-emit-does-base-conversion-itself.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0048-crypto-x86-poly1305-emit-does-base-conversion-itself.patch b/target/linux/generic/backport-5.4/080-wireguard-0048-crypto-x86-poly1305-emit-does-base-conversion-itself.patch new file mode 100644 index 0000000000..8209ca2898 --- /dev/null +++ b/target/linux/generic/backport-5.4/080-wireguard-0048-crypto-x86-poly1305-emit-does-base-conversion-itself.patch @@ -0,0 +1,36 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: "Jason A. Donenfeld" <Jason@zx2c4.com> +Date: Fri, 17 Jan 2020 11:42:22 +0100 +Subject: [PATCH] crypto: x86/poly1305 - emit does base conversion itself + +commit f9e7fe32a792726186301423ff63a465d63386e1 upstream. + +The emit code does optional base conversion itself in assembly, so we +don't need to do that here. Also, neither one of these functions uses +simd instructions, so checking for that doesn't make sense either. + +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +--- + arch/x86/crypto/poly1305_glue.c | 8 ++------ + 1 file changed, 2 insertions(+), 6 deletions(-) + +--- a/arch/x86/crypto/poly1305_glue.c ++++ b/arch/x86/crypto/poly1305_glue.c +@@ -123,13 +123,9 @@ static void poly1305_simd_blocks(void *c + static void poly1305_simd_emit(void *ctx, u8 mac[POLY1305_DIGEST_SIZE], + const u32 nonce[4]) + { +- struct poly1305_arch_internal *state = ctx; +- +- if (!IS_ENABLED(CONFIG_AS_AVX) || !static_branch_likely(&poly1305_use_avx) || +- !state->is_base2_26 || !crypto_simd_usable()) { +- convert_to_base2_64(ctx); ++ if (!IS_ENABLED(CONFIG_AS_AVX) || !static_branch_likely(&poly1305_use_avx)) + poly1305_emit_x86_64(ctx, mac, nonce); +- } else ++ else + poly1305_emit_avx(ctx, mac, nonce); + } + |