# git rev-parse -q --verify 2c523b344dfa65a3738e7039832044aa133c75fb^{commit}
2c523b344dfa65a3738e7039832044aa133c75fb
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2c523b344dfa65a3738e7039832044aa133c75fb
# git clean -qxdf
# < git log -1
# commit 2c523b344dfa65a3738e7039832044aa133c75fb
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Mar 8 17:44:44 2020 -0700
# 
#     Linux 5.6-rc5
# < /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 2c523b344dfa65a3738e7039832044aa133c75fb
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pseries_le_defconfig
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: vmlinux.o(.text+0x31dc): Section mismatch in reference from the variable __boot_from_prom to the function .init.text:prom_init()
The function __boot_from_prom() references
the function __init prom_init().
This is often because __boot_from_prom lacks a __init 
annotation or the annotation of prom_init is wrong.

WARNING: vmlinux.o(.text+0x33c8): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/linus_pseries_le_defconfig_powerpc-gcc5
# Build took: 0:04:12.260174