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authorArd Biesheuvel <ardb@kernel.org>2019-11-08 13:22:09 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2019-11-17 09:02:39 +0800
commit28e8d89b1ce8d2e7badfb5f69971dd635acb8863 (patch)
treee397d74fee102bca32ded72eaf47c28039391508 /crypto
parentcrypto: chacha - move existing library code into lib/crypto (diff)
downloadlinux-dev-28e8d89b1ce8d2e7badfb5f69971dd635acb8863.tar.xz
linux-dev-28e8d89b1ce8d2e7badfb5f69971dd635acb8863.zip
crypto: x86/chacha - depend on generic chacha library instead of crypto driver
In preparation of extending the x86 ChaCha driver to also expose the ChaCha library interface, drop the dependency on the chacha_generic crypto driver as a non-SIMD fallback, and depend on the generic ChaCha library directly. This way, we only pull in the code we actually need, without registering a set of ChaCha skciphers that we will never use. Since turning the FPU on and off is cheap these days, simplify the SIMD routine by dropping the per-page yield, which makes for a cleaner switch to the library API as well. This also allows use to invoke the skcipher walk routines in non-atomic mode. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ae4495ae003f..1abca30ed6ae 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1436,7 +1436,7 @@ config CRYPTO_CHACHA20_X86_64
tristate "ChaCha stream cipher algorithms (x86_64/SSSE3/AVX2/AVX-512VL)"
depends on X86 && 64BIT
select CRYPTO_SKCIPHER
- select CRYPTO_CHACHA20
+ select CRYPTO_LIB_CHACHA_GENERIC
help
SSSE3, AVX2, and AVX-512VL optimized implementations of the ChaCha20,
XChaCha20, and XChaCha12 stream ciphers.