# git rev-parse -q --verify ef78e5ec9214376c5cb989f5da70b02d0c117b66^{commit}
ef78e5ec9214376c5cb989f5da70b02d0c117b66
already have revision, skipping fetch
# git checkout -q -f -B kisskb ef78e5ec9214376c5cb989f5da70b02d0c117b66
# git clean -qxdf
# < git log -1
# commit ef78e5ec9214376c5cb989f5da70b02d0c117b66
# Author: Matias Bjørling <mb@lightnvm.io>
# Date:   Mon Nov 26 11:27:03 2018 -0800
# 
#     ia64: export node_distance function
#     
#     The numa_slit variable used by node_distance is available to a
#     module as long as it is linked at compile-time. However, it is
#     not available to loadable modules. Leading to errors such as:
#     
#       ERROR: "numa_slit" [drivers/nvme/host/nvme-core.ko] undefined!
#     
#     The error above is caused by the nvme multipath code that makes
#     use of node_distance for its path calculation. When the patch was
#     added, the lightnvm subsystem would select nvme and always compile
#     it in, leading to the node_distance call to always succeed.
#     However, when this requirement was removed, nvme could be compiled
#     in as a module, which exposed this bug.
#     
#     This patch extracts node_distance to a function and exports it.
#     Since ACPI is depending on node_distance being a simple lookup to
#     numa_slit, the previous behavior is exposed as slit_distance and its
#     users updated.
#     
#     Fixes: f333444708f82 "nvme: take node locality into account when selecting a path"
#     Fixes: 73569e11032f "lightnvm: remove dependencies on BLK_DEV_NVME and PCI"
#     Signed-off-by: Matias Bjøring <mb@lightnvm.io>
#     Signed-off-by: Tony Luck <tony.luck@intel.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < git log --format=%s --max-count=1 ef78e5ec9214376c5cb989f5da70b02d0c117b66
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig+NO_SPLPAR_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_PPC_SPLPAR=n
# yes \n | make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig+NO_SPLPAR_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 10 ARCH=powerpc O=/kisskb/build/linus_pseries_le_defconfig+NO_SPLPAR_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/linus_pseries_le_defconfig+NO_SPLPAR_ppc64le-gcc5
# Build took: 0:03:00.689562