# git rev-parse -q --verify 823c1fe9495e296abf64384eda5610013d451f76^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/stable linux-4.9.y
# git rev-parse -q --verify 823c1fe9495e296abf64384eda5610013d451f76^{commit}
823c1fe9495e296abf64384eda5610013d451f76
# git checkout -q -f -B kisskb 823c1fe9495e296abf64384eda5610013d451f76
# git clean -qxdf
# < git log -1
# commit 823c1fe9495e296abf64384eda5610013d451f76
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Wed Feb 3 23:19:52 2021 +0100
# 
#     Linux 4.9.255
#     
#     Tested-by: Jon Hunter <jonathanh@nvidia.com>
#     Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
#     Tested-by: Shuah Khan <skhan@linuxfoundation.org>
#     Tested-by: Guenter Roeck <linux@roeck-us.net>
#     Link: https://lore.kernel.org/r/20210202132942.035179752@linuxfoundation.org
#     Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 823c1fe9495e296abf64384eda5610013d451f76
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/stable-4.9_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 32 ARCH=powerpc O=/kisskb/build/stable-4.9_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 32 ARCH=powerpc O=/kisskb/build/stable-4.9_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:3588:warning: override: reassigning to symbol SMP
# make -s -j 32 ARCH=powerpc O=/kisskb/build/stable-4.9_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/l2cr_6xx.S: Assembler messages:
/kisskb/src/arch/powerpc/kernel/l2cr_6xx.S:184: Warning: invalid register expression
/kisskb/src/arch/powerpc/kernel/l2cr_6xx.S:331: Warning: invalid register expression
WARNING: modpost: Found 1 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
INFO: Uncompressed kernel (size 0x78a000) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x800000)
Completed OK
# rm -rf /kisskb/build/stable-4.9_pmac32_defconfig+SMP_powerpc-gcc5
# Build took: 0:02:33.239245