# git rev-parse -q --verify 84342a5af1d49770b67d2da455a7345869447086^{commit}
84342a5af1d49770b67d2da455a7345869447086
already have revision, skipping fetch
# git checkout -q -f -B kisskb 84342a5af1d49770b67d2da455a7345869447086
# git clean -qxdf
# < git log -1
# commit 84342a5af1d49770b67d2da455a7345869447086
# Merge: 02a4f7ac8bfd 5bece3d66153
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Fri Nov 8 00:15:29 2019 +1100
# 
#     Merge branch 'topic/kasan-bitops' into next-test
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 84342a5af1d49770b67d2da455a7345869447086
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: vmlinux.o(.text+0x2fc8): 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/powerpc-next_powernv_defconfig_powerpc-gcc8
# Build took: 0:03:31.748361