# git rev-parse -q --verify 270f791a316d650f70ff3737eab347088a1bd5f7^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/stable linux-4.9.y
# git rev-parse -q --verify 270f791a316d650f70ff3737eab347088a1bd5f7^{commit}
270f791a316d650f70ff3737eab347088a1bd5f7
# git checkout -q -f -B kisskb 270f791a316d650f70ff3737eab347088a1bd5f7
# git clean -qxdf
# < git log -1
# commit 270f791a316d650f70ff3737eab347088a1bd5f7
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Sun May 10 10:28:04 2020 +0200
# 
#     Linux 4.9.223
# < /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 270f791a316d650f70ff3737eab347088a1bd5f7
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/stable-4.9_44x_akebono_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  44x/akebono_defconfig
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/stable-4.9_44x_akebono_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/stable-4.9_44x_akebono_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/stable-4.9_44x_akebono_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: modpost: Found 1 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/stable-4.9_44x_akebono_defconfig_powerpc-gcc4.9
# Build took: 0:02:13.296708