# git rev-parse -q --verify e167191e4a8a2b4d25e1e54bacdbd36473354894^{commit}
e167191e4a8a2b4d25e1e54bacdbd36473354894
already have revision, skipping fetch
# git checkout -q -f -B kisskb e167191e4a8a2b4d25e1e54bacdbd36473354894
# git clean -qxdf
# < git log -1
# commit e167191e4a8a2b4d25e1e54bacdbd36473354894
# Author: Kees Cook <keescook@chromium.org>
# Date:   Tue Aug 13 08:15:32 2019 -0700
# 
#     kbuild: Parameterize kallsyms generation and correct reporting
#     
#     When kallsyms generation happens, temporary vmlinux outputs are linked
#     but the quiet make output didn't report it, giving the impression that
#     the prior command is taking longer than expected.
#     
#     Instead, report the linking step explicitly. While at it, this
#     consolidates the repeated "kallsyms generation step" into a single
#     function and removes the existing copy/pasting.
#     
#     Signed-off-by: Kees Cook <keescook@chromium.org>
#     Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 e167191e4a8a2b4d25e1e54bacdbd36473354894
# < make -s -j 24 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  defconfig
# make -s -j 24 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
cc1: error: unrecognized command line option '-mtune=zEC12'
cc1: error: unrecognized command line option '-mtune=zEC12'
make[2]: *** [/kisskb/src/scripts/Makefile.build:113: scripts/mod/devicetable-offsets.s] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:280: scripts/mod/empty.o] Error 1
make[1]: *** [/kisskb/src/Makefile:1119: prepare0] Error 2
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 24 ARCH=s390 O=/kisskb/build/kbuild_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/kbuild_s390-defconfig_s390x
# Build took: 0:00:03.732727