# git rev-parse -q --verify e3a606f2c544b231f6079c8c5fea451e772e1139^{commit}
e3a606f2c544b231f6079c8c5fea451e772e1139
already have revision, skipping fetch
# git checkout -q -f -B kisskb e3a606f2c544b231f6079c8c5fea451e772e1139
# git clean -qxdf
# < git log -1
# commit e3a606f2c544b231f6079c8c5fea451e772e1139
# Author: Ard Biesheuvel <ardb@kernel.org>
# Date:   Wed Apr 21 09:55:11 2021 +0200
# 
#     fsverity: relax build time dependency on CRYPTO_SHA256
#     
#     CONFIG_CRYPTO_SHA256 denotes the generic C implementation of the SHA-256
#     shash algorithm, which is selected as the default crypto shash provider
#     for fsverity. However, fsverity has no strict link time dependency, and
#     the same shash could be exposed by an optimized implementation, and arm64
#     has a number of those (scalar, NEON-based and one based on special crypto
#     instructions). In such cases, it makes little sense to require that the
#     generic C implementation is incorporated as well, given that it will never
#     be called.
#     
#     To address this, relax the 'select' clause to 'imply' so that the generic
#     driver can be omitted from the build if desired.
#     
#     Acked-by: Eric Biggers <ebiggers@google.com>
#     Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
#     Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 e3a606f2c544b231f6079c8c5fea451e772e1139
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/crypto_x86_64-allnoconfig_x86_64-gcc8
# Build took: 0:00:19.821221