# 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-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 e3a606f2c544b231f6079c8c5fea451e772e1139
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_pmac32_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  pmac32_defconfig
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_pmac32_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_pmac32_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/crypto_pmac32_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/block/genhd.c: In function 'diskstats_show':
/kisskb/src/block/genhd.c:1313:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
INFO: Uncompressed kernel (size 0xa5189c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xb00000)
Completed OK
# rm -rf /kisskb/build/crypto_pmac32_defconfig_powerpc-gcc4.9
# Build took: 0:01:00.322181