# git rev-parse -q --verify b08918fb3f27d1843152986e6bc79ec723dba8cc^{commit}
b08918fb3f27d1843152986e6bc79ec723dba8cc
already have revision, skipping fetch
# git checkout -q -f -B kisskb b08918fb3f27d1843152986e6bc79ec723dba8cc
# git clean -qxdf
# < git log -1
# commit b08918fb3f27d1843152986e6bc79ec723dba8cc
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Sep 20 09:06:26 2019 -0700
# 
#     lz4: do not export static symbol
#     
#     Kbuild now complains (rightly) about it.
#     
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /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 b08918fb3f27d1843152986e6bc79ec723dba8cc
# < make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  defconfig
# make -s -j 120 ARCH=s390 O=/kisskb/build/linus_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:99: scripts/mod/devicetable-offsets.s] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:266: scripts/mod/empty.o] Error 1
make[1]: *** [/kisskb/src/Makefile:1128: prepare0] Error 2
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 120 ARCH=s390 O=/kisskb/build/linus_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/linus_s390-defconfig_s390x
# Build took: 0:00:02.638729