# git rev-parse -q --verify 7ea91af929f8d7632aab3c13e6ca05f882bb88a6^{commit}
7ea91af929f8d7632aab3c13e6ca05f882bb88a6
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7ea91af929f8d7632aab3c13e6ca05f882bb88a6
# git clean -qxdf
# < git log -1
# commit 7ea91af929f8d7632aab3c13e6ca05f882bb88a6
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Fri Oct 7 00:48:16 2022 +1000
# 
#     powerpc/64: poison __per_cpu_offset to catch use-before-init
#     
#     If the boot CPU tries to access per-cpu data of other CPUs before
#     per cpu areas are set up, it will unexpectedly use offset 0.
#     
#     Try to catch such accesses by poisoning the __per_cpu_offset array.
#     
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20221006144816.162702-1-npiggin@gmail.com
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 7ea91af929f8d7632aab3c13e6ca05f882bb88a6
# < make -s -j 160 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  defconfig
# < make -s -j 160 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  help
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  olddefconfig
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/powerpc-next_sparc64-defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  
<stdin>:1517:2: warning: #warning syscall clone3 not implemented [-Wcpp]
WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
Is "_mcount" prototyped in <asm/asm-prototypes.h>?
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/powerpc-next_sparc64-defconfig_sparc64-gcc5
# Build took: 0:01:23.647732