# git rev-parse -q --verify da849e5647bedacc4f8bf59230e7b041ffac96f5^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-stable-rc.git linux-4.9.y
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 da849e5647bedacc4f8bf59230e7b041ffac96f5^{commit}
da849e5647bedacc4f8bf59230e7b041ffac96f5
# git checkout -q -f -B kisskb da849e5647bedacc4f8bf59230e7b041ffac96f5
# git clean -qxdf
# < git log -1
# commit da849e5647bedacc4f8bf59230e7b041ffac96f5
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Tue Oct 16 19:05:36 2018 +0200
# 
#     Linux 4.9.134-rc1
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 da849e5647bedacc4f8bf59230e7b041ffac96f5
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/stable-rc-4.9_pseries_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  pseries_defconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/stable-rc-4.9_pseries_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
In file included from /kisskb/src/arch/powerpc/include/asm/book3s/64/mmu-hash.h:24:0,
                 from /kisskb/src/arch/powerpc/include/asm/book3s/64/mmu.h:29,
                 from /kisskb/src/arch/powerpc/include/asm/mmu.h:291,
                 from /kisskb/src/arch/powerpc/include/asm/lppaca.h:36,
                 from /kisskb/src/arch/powerpc/include/asm/paca.h:21,
                 from /kisskb/src/arch/powerpc/include/asm/hw_irq.h:42,
                 from /kisskb/src/arch/powerpc/include/asm/irqflags.h:11,
                 from /kisskb/src/include/linux/irqflags.h:15,
                 from /kisskb/src/include/linux/spinlock.h:53,
                 from /kisskb/src/include/linux/seqlock.h:35,
                 from /kisskb/src/include/linux/time.h:5,
                 from /kisskb/src/include/uapi/linux/timex.h:56,
                 from /kisskb/src/include/linux/timex.h:56,
                 from /kisskb/src/include/linux/sched.h:19,
                 from /kisskb/src/arch/powerpc/kernel/asm-offsets.c:17:
/kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h: In function 'pte_modify':
/kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h:491:9: error: '_PAGE_DEVMAP' undeclared (first use in this function)
/kisskb/src/arch/powerpc/include/asm/book3s/64/pgtable.h:491:9: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [/kisskb/src/./Kbuild:82: arch/powerpc/kernel/asm-offsets.s] Error 1
make[1]: *** [/kisskb/src/Makefile:1053: prepare0] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 80 ARCH=powerpc O=/kisskb/build/stable-rc-4.9_pseries_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/stable-rc-4.9_pseries_defconfig_powerpc
# Build took: 0:02:21.043460