# git rev-parse -q --verify a3dcd8bf86ec82ded341a92a7cf5ea7ab16abe62^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify a3dcd8bf86ec82ded341a92a7cf5ea7ab16abe62^{commit}
a3dcd8bf86ec82ded341a92a7cf5ea7ab16abe62
# git checkout -q -f -B kisskb a3dcd8bf86ec82ded341a92a7cf5ea7ab16abe62
# git clean -qxdf
# < git log -1
# commit a3dcd8bf86ec82ded341a92a7cf5ea7ab16abe62
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Jan 10 22:57:37 2019 +1100
# 
#     powerpc/64s: Add MMU type to __die() output
#     
#     On Power9 machines (64-bit Book3S), we can be running with either the
#     Hash table or Radix tree MMU enabled. So add some text to the __die()
#     output to tell us which is enabled, for the case where all you have is
#     the oops output and no other information.
#     
#     Example output:
#     
#       kernel BUG at drivers/misc/lkdtm/bugs.c:63!
#       Oops: Exception in kernel mode, sig: 5 [#1]
#       LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
#       Modules linked in: kvm vmx_crypto binfmt_misc ip_tables x_tables
#     
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /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 a3dcd8bf86ec82ded341a92a7cf5ea7ab16abe62
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pseries_le_defconfig
# Added to kconfig CONFIG_NUMA=n
# yes \n | make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
WARNING: modpost: Found 3 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/powerpc-next_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5
# Build took: 0:01:29.673951