On Mon, 28 Apr 2025 10:00:33 -0700
Eric Biggers <ebigg...@kernel.org> wrote:
> From: Eric Biggers <ebigg...@google.com>
>
> Instead of providing crypto_shash algorithms for the arch-optimized
> SHA-256 code, instead implement the SHA-256 library. This is much
> simpler, it makes the SHA-256 library functions be arch-optimized, and
> it fixes the longstanding issue where the arch-optimized SHA-256 was
> disabled by default. SHA-256 still remains available through
> crypto_shash, but individual architectures no longer need to handle it.
I can get to the following error after this patch, now merged as commit
b9eac03edcf8 ("crypto: s390/sha256 - implement library instead of shash"):
error: the following would cause module name conflict:
crypto/sha256.ko
arch/s390/lib/crypto/sha256.ko
Base config file is generated from:
$ CONFIG=$(mktemp)
$ cat << EOF > $CONFIG
CONFIG_MODULES=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_SHA256=m
EOF
Base config applied to allnoconfig:
$ KCONFIG_ALLCONFIG=$CONFIG make ARCH=s390 CROSS_COMPILE=s390x-linux-gnu-
allnoconfig
Resulting in:
$ grep SHA256 .config
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_LIB_SHA256=m
CONFIG_CRYPTO_ARCH_HAVE_LIB_SHA256=y
CONFIG_CRYPTO_LIB_SHA256_GENERIC=m
CONFIG_CRYPTO_SHA256_S390=m
Thanks,
Alex
