# git rev-parse -q --verify cb4723c2aac5ee2d5f41d81f4e6f19aaa19b278f^{commit}
cb4723c2aac5ee2d5f41d81f4e6f19aaa19b278f
already have revision, skipping fetch
# git checkout -q -f -B kisskb cb4723c2aac5ee2d5f41d81f4e6f19aaa19b278f
# git clean -qxdf
# < git log -1
# commit cb4723c2aac5ee2d5f41d81f4e6f19aaa19b278f
# Author: Christoph Hellwig <hch@lst.de>
# Date:   Tue Jun 25 16:52:39 2019 +0200
# 
#     powerpc/powernv: remove the unused vas_win_paste_addr and vas_win_id functions
#     
#     These two function have never been used anywhere in the kernel tree
#     since they were added to the kernel.
#     
#     Signed-off-by: Christoph Hellwig <hch@lst.de>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /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 cb4723c2aac5ee2d5f41d81f4e6f19aaa19b278f
# < make -s -j 80 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 80 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+0x30d0): 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: 0:03:13.537786