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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2020-03-01 17:52:35 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-03-05 10:28:09 +0300 |
| commit | 1579f1bc3b753d17a44de3457d5c6f4a5b14c752 (patch) | |
| tree | fbec2103aa55f71c32035e1e0cfdf530d8939059 /include/crypto/curve25519.h | |
| parent | c9cc0517bba9f0213f1e55172feceb99e5512daf (diff) | |
| download | linux-1579f1bc3b753d17a44de3457d5c6f4a5b14c752.tar.xz | |
crypto: x86/curve25519 - support assemblers with no adx support
Some older version of GAS do not support the ADX instructions, similarly
to how they also don't support AVX and such. This commit adds the same
build-time detection mechanisms we use for AVX and others for ADX, and
then makes sure that the curve25519 library dispatcher calls the right
functions.
Reported-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto/curve25519.h')
| -rw-r--r-- | include/crypto/curve25519.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/crypto/curve25519.h b/include/crypto/curve25519.h index 4e6dc840b159..9ecb3c1f0f15 100644 --- a/include/crypto/curve25519.h +++ b/include/crypto/curve25519.h @@ -33,7 +33,8 @@ bool __must_check curve25519(u8 mypublic[CURVE25519_KEY_SIZE], const u8 secret[CURVE25519_KEY_SIZE], const u8 basepoint[CURVE25519_KEY_SIZE]) { - if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CURVE25519)) + if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CURVE25519) && + (!IS_ENABLED(CONFIG_CRYPTO_CURVE25519_X86) || IS_ENABLED(CONFIG_AS_ADX))) curve25519_arch(mypublic, secret, basepoint); else curve25519_generic(mypublic, secret, basepoint); @@ -49,7 +50,8 @@ __must_check curve25519_generate_public(u8 pub[CURVE25519_KEY_SIZE], CURVE25519_KEY_SIZE))) return false; - if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CURVE25519)) + if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CURVE25519) && + (!IS_ENABLED(CONFIG_CRYPTO_CURVE25519_X86) || IS_ENABLED(CONFIG_AS_ADX))) curve25519_base_arch(pub, secret); else curve25519_generic(pub, secret, curve25519_base_point); |