# git rev-parse -q --verify cac24947adbd17261e50d20e03000d67def71bd0^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-npiggin.git kerkins
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 cac24947adbd17261e50d20e03000d67def71bd0^{commit}
cac24947adbd17261e50d20e03000d67def71bd0
# git checkout -q -f -B kisskb cac24947adbd17261e50d20e03000d67def71bd0
# git clean -qxdf
# < git log -1
# commit cac24947adbd17261e50d20e03000d67def71bd0
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Fri Aug 17 08:25:28 2018 +1000
# 
#     slb cache remove incomplete
#     
#     On POWER8 this is worth about 4% on context switches. Could be replaced by
#     preload cache instead?
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < git log --format=%s --max-count=1 cac24947adbd17261e50d20e03000d67def71bd0
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/npiggin_pseries_le_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pseries_le_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/npiggin_pseries_le_defconfig_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/npiggin_pseries_le_defconfig_ppc64le-gcc5
# Build took: 0:02:43.814429