| Message ID | 20200107201327.3863345-1-arnd@arndb.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | crypto: curve25519 - Work around link failure | expand |
Hey Arnd, Another solution to this was already posted: https://lore.kernel.org/linux-crypto/CAHmME9pg4KWw1zNVybxn1WLGusyGCjqeAHLQXY=Dr4zznUM82g@mail.gmail.com/T/#t That might be slightly cleaner, though yours is shorter. I'm alright with either one. Jason
On Tue, Jan 7, 2020 at 9:26 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote: > > Hey Arnd, > > Another solution to this was already posted: > > https://lore.kernel.org/linux-crypto/CAHmME9pg4KWw1zNVybxn1WLGusyGCjqeAHLQXY=Dr4zznUM82g@mail.gmail.com/T/#t > > That might be slightly cleaner, though yours is shorter. I'm alright > with either one. Yes, I agree the other approach looks nicer. I've added that to my randconfig builder in place of my patch to see if it's sufficient. If not, I'll let you know. Arnd
diff --git a/arch/arm/crypto/Makefile b/arch/arm/crypto/Makefile index b745c17d356f..a7b3957aca58 100644 --- a/arch/arm/crypto/Makefile +++ b/arch/arm/crypto/Makefile @@ -12,7 +12,9 @@ obj-$(CONFIG_CRYPTO_SHA512_ARM) += sha512-arm.o obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha-neon.o obj-$(CONFIG_CRYPTO_POLY1305_ARM) += poly1305-arm.o obj-$(CONFIG_CRYPTO_NHPOLY1305_NEON) += nhpoly1305-neon.o -obj-$(CONFIG_CRYPTO_CURVE25519_NEON) += curve25519-neon.o +ifdef CONFIG_CRYPTO_CURVE25519_NEON +obj-$(CONFIG_CRYPTO_LIB_CURVE25519_GENERIC) += curve25519-neon.o +endif obj-$(CONFIG_CRYPTO_AES_ARM_CE) += aes-arm-ce.o obj-$(CONFIG_CRYPTO_SHA1_ARM_CE) += sha1-arm-ce.o diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index 958440eae27e..7546c276e2f0 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -39,7 +39,9 @@ obj-$(CONFIG_CRYPTO_AEGIS128_AESNI_SSE2) += aegis128-aesni.o obj-$(CONFIG_CRYPTO_NHPOLY1305_SSE2) += nhpoly1305-sse2.o obj-$(CONFIG_CRYPTO_NHPOLY1305_AVX2) += nhpoly1305-avx2.o -obj-$(CONFIG_CRYPTO_CURVE25519_X86) += curve25519-x86_64.o +ifdef CONFIG_CRYPTO_CURVE25519_X86 +obj-$(CONFIG_CRYPTO_LIB_CURVE25519_GENERIC) += curve25519-x86_64.o +endif # These modules require assembler to support AVX. ifeq ($(avx_supported),yes) diff --git a/crypto/Makefile b/crypto/Makefile index 4ca12b6044f7..93ecbfe50285 100644 --- a/crypto/Makefile +++ b/crypto/Makefile @@ -166,7 +166,10 @@ obj-$(CONFIG_CRYPTO_ZSTD) += zstd.o obj-$(CONFIG_CRYPTO_OFB) += ofb.o obj-$(CONFIG_CRYPTO_ECC) += ecc.o obj-$(CONFIG_CRYPTO_ESSIV) += essiv.o -obj-$(CONFIG_CRYPTO_CURVE25519) += curve25519-generic.o + +ifdef CONFIG_CRYPTO_CURVE25519 +obj-$(CONFIG_CRYPTO_LIB_CURVE25519_GENERIC) += curve25519-generic.o +endif ecdh_generic-y += ecdh.o ecdh_generic-y += ecdh_helper.o
The curve25519 selftest causes a link failure when one of the two implementations is built-in and the other one is a loadable module, as then the library gets built in as well but cannot call into the module: lib/crypto/curve25519-selftest.o: In function `curve25519_selftest': curve25519-selftest.c:(.init.text+0x5c): undefined reference to `curve25519_arch' curve25519-selftest.c:(.init.text+0xfd): undefined reference to `curve25519_base_arch' curve25519-selftest.c:(.init.text+0x15a): undefined reference to `curve25519_arch' There is probably a better fix, but this is the local workaround that I used to get a clean randconfig build again, using Makefile tricks to make all the curve25519 code built-in if any of the implementations are. Fixes: aa127963f1ca ("crypto: lib/curve25519 - re-add selftests") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/arm/crypto/Makefile | 4 +++- arch/x86/crypto/Makefile | 4 +++- crypto/Makefile | 5 ++++- 3 files changed, 10 insertions(+), 3 deletions(-)