# git rev-parse -q --verify 27da80719ef132cf8c80eb406d5aeb37dddf78cc^{commit}
27da80719ef132cf8c80eb406d5aeb37dddf78cc
already have revision, skipping fetch
# git checkout -q -f -B kisskb 27da80719ef132cf8c80eb406d5aeb37dddf78cc
# git clean -qxdf
# < git log -1
# commit 27da80719ef132cf8c80eb406d5aeb37dddf78cc
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Tue Feb 26 18:18:48 2019 +0000
# 
#     powerpc/fsl: Fix the flush of branch predictor.
#     
#     The commit identified below adds MC_BTB_FLUSH macro only when
#     CONFIG_PPC_FSL_BOOK3E is defined. This results in the following error
#     on some configs (seen several times with kisskb randconfig_defconfig)
#     
#     arch/powerpc/kernel/exceptions-64e.S:576: Error: Unrecognized opcode: `mc_btb_flush'
#     make[3]: *** [scripts/Makefile.build:367: arch/powerpc/kernel/exceptions-64e.o] Error 1
#     make[2]: *** [scripts/Makefile.build:492: arch/powerpc/kernel] Error 2
#     make[1]: *** [Makefile:1043: arch/powerpc] Error 2
#     make: *** [Makefile:152: sub-make] Error 2
#     
#     This patch adds a blank definition of MC_BTB_FLUSH for other cases.
#     
#     Fixes: 10c5e83afd4a ("powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)")
#     Cc: Diana Craciun <diana.craciun@nxp.com>
#     Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Reviewed-by: Daniel Axtens <dja@axtens.net>
#     Reviewed-by: Diana Craciun <diana.craciun@nxp.com>
#     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 27da80719ef132cf8c80eb406d5aeb37dddf78cc
# < make -s -j 80 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 80 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 80 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: 0:02:46.422131