# git rev-parse -q --verify 537896fabed11f8d9788886d1aacdb977213c7b3^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# git rev-parse -q --verify 537896fabed11f8d9788886d1aacdb977213c7b3^{commit}
537896fabed11f8d9788886d1aacdb977213c7b3
# git checkout -q -f -B kisskb 537896fabed11f8d9788886d1aacdb977213c7b3
# git clean -qxdf
# < git log -1
# commit 537896fabed11f8d9788886d1aacdb977213c7b3
# Author: Sasha Levin <sashal@kernel.org>
# Date:   Mon Jan 18 14:54:53 2021 -0500
# 
#     kbuild: give the SUBLEVEL more room in KERNEL_VERSION
#     
#     SUBLEVEL only has 8 bits of space, which means that we'll overflow it
#     once it reaches 256.
#     
#     Few of the stable branches will imminently overflow SUBLEVEL while
#     there's no risk of overflowing VERSION.
#     
#     Thus, give SUBLEVEL 8 more bits which will be stolen from VERSION, this
#     should create a better balance between the different version numbers we
#     use.
#     
#     The downside here is that Linus will have 8 bits less to play with, but
#     given our current release cadence (~10 weeks), the number of Linus's
#     fingers & toes (20), and the current VERSION (5) we can calculate that
#     VERSION will overflow in just over 1,000 years, so I'm kicking this can
#     down the road.
#     
#     Cc: stable@kernel.org
#     Signed-off-by: Sasha Levin <sashal@kernel.org>
#     Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 537896fabed11f8d9788886d1aacdb977213c7b3
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pmac32_defconfig
# Added to kconfig CONFIG_SMP=y
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4145:warning: override: reassigning to symbol SMP
# make -s -j 80 ARCH=powerpc O=/kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xad7a84) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xb00000)
Completed OK
# rm -rf /kisskb/build/kbuild_pmac32_defconfig+SMP_powerpc-gcc5
# Build took: 0:01:50.573363