# git rev-parse -q --verify 815c105311e8cdba0f84293235f6f043152808cd^{commit}
815c105311e8cdba0f84293235f6f043152808cd
already have revision, skipping fetch
# git checkout -q -f -B kisskb 815c105311e8cdba0f84293235f6f043152808cd
# git clean -qxdf
# < git log -1
# commit 815c105311e8cdba0f84293235f6f043152808cd
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Mon Jun 24 23:45:07 2019 +0800
# 
#     Linux 5.1.15-rc2
# < /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 815c105311e8cdba0f84293235f6f043152808cd
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/stable-rc-5.1_powernv_defconfig+NO_PERF_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# Added to kconfig CONFIG_PERF_EVENTS=n
# yes \n | make -s -j 80 ARCH=powerpc O=/kisskb/build/stable-rc-5.1_powernv_defconfig+NO_PERF_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 80 ARCH=powerpc O=/kisskb/build/stable-rc-5.1_powernv_defconfig+NO_PERF_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: vmlinux.o(.text+0x2d28): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:early_setup()
The function start_here_multiplatform() references
the function __init early_setup().
This is often because start_here_multiplatform lacks a __init 
annotation or the annotation of early_setup is wrong.

WARNING: vmlinux.o(.text+0x2d64): 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/stable-rc-5.1_powernv_defconfig+NO_PERF_ppc64le-gcc5
# Build took: 0:02:48.361402