# git rev-parse -q --verify a9da8725b7a744be3ff0ff44cab2547e4d1e6675^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/stable linux-4.18.y
# git rev-parse -q --verify a9da8725b7a744be3ff0ff44cab2547e4d1e6675^{commit}
a9da8725b7a744be3ff0ff44cab2547e4d1e6675
# git checkout -q -f -B kisskb a9da8725b7a744be3ff0ff44cab2547e4d1e6675
# git clean -qxdf
# < git log -1
# commit a9da8725b7a744be3ff0ff44cab2547e4d1e6675
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Wed Nov 21 09:22:14 2018 +0100
# 
#     Linux 4.18.20
# < /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 a9da8725b7a744be3ff0ff44cab2547e4d1e6675
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/stable-4.18_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 24 ARCH=powerpc O=/kisskb/build/stable-4.18_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 24 ARCH=powerpc O=/kisskb/build/stable-4.18_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 24 ARCH=powerpc O=/kisskb/build/stable-4.18_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'
arch/powerpc/boot/akebono.dtb: Warning (pci_bridge): /plb/pciex@10100000000: node name is not "pci" or "pcie"
arch/powerpc/boot/akebono.dtb: Warning (pci_bridge): /plb/pciex@20100000000: node name is not "pci" or "pcie"
arch/powerpc/boot/akebono.dtb: Warning (pci_bridge): /plb/pciex@18100000000: node name is not "pci" or "pcie"
arch/powerpc/boot/akebono.dtb: Warning (pci_bridge): /plb/pciex@28100000000: node name is not "pci" or "pcie"
arch/powerpc/boot/akebono.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge'
Completed OK
# rm -rf /kisskb/build/stable-4.18_44x_akebono_defconfig_powerpc-gcc4.9
# Build took: 0:01:59.236769