# git rev-parse -q --verify da64dbe8eceeaeff55f7b95865645254ec4beba7^{commit}
da64dbe8eceeaeff55f7b95865645254ec4beba7
already have revision, skipping fetch
# git checkout -q -f -B kisskb da64dbe8eceeaeff55f7b95865645254ec4beba7
# git clean -qxdf
# < git log -1
# commit da64dbe8eceeaeff55f7b95865645254ec4beba7
# Author: Jessica Yu <jeyu@kernel.org>
# Date:   Fri Mar 6 17:02:06 2020 +0100
# 
#     modpost: return error if module is missing ns imports and MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n
#     
#     Currently when CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n, modpost
#     only warns when a module is missing namespace imports. Under this
#     configuration, such a module cannot be loaded into the kernel anyway, as
#     the module loader would reject it. We might as well return a build
#     error when a module is missing namespace imports under
#     CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n, so that the build
#     warning does not go ignored/unnoticed.
#     
#     Signed-off-by: Jessica Yu <jeyu@kernel.org>
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.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 da64dbe8eceeaeff55f7b95865645254ec4beba7
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig+NO_PERF_powerpc-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
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig+NO_PERF_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/kbuild_powernv_defconfig+NO_PERF_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_powernv_defconfig+NO_PERF_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: modpost: 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/kbuild_powernv_defconfig+NO_PERF_powerpc-gcc5
# Build took: 0:03:24.626639