# git rev-parse -q --verify 715b36055f29c899261ad62af482896dee486936^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
# git rev-parse -q --verify 715b36055f29c899261ad62af482896dee486936^{commit}
715b36055f29c899261ad62af482896dee486936
# git checkout -q -f -B kisskb 715b36055f29c899261ad62af482896dee486936
# git clean -qxdf
# < git log -1
# commit 715b36055f29c899261ad62af482896dee486936
# Author: Christopher M. Riedl <cmr@codefail.de>
# Date:   Wed Feb 3 12:43:23 2021 -0600
# 
#     powerpc/signal64: Use __get_user() to copy sigset_t
#     
#     Usually sigset_t is exactly 8B which is a "trivial" size and does not
#     warrant using __copy_from_user(). Use __get_user() directly in
#     anticipation of future work to remove the trivial size optimizations
#     from __copy_from_user(). Calling __get_user() also results in a small
#     boost to signal handling throughput here.
#     
#     Signed-off-by: Christopher M. Riedl <cmr@codefail.de>
#     [mpe: Squash sparse fixup from Chris]
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210203184323.20792-11-cmr@codefail.de
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 715b36055f29c899261ad62af482896dee486936
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  defconfig
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  help
# make -s -j 24 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  olddefconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:25: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:33: LSE atomics not supported by binutils
/kisskb/src/arch/arm64/kernel/smp.c: In function 'arch_show_interrupts':
/kisskb/src/arch/arm64/kernel/smp.c:810:16: warning: unused variable 'irq' [-Wunused-variable]
   unsigned int irq = irq_desc_get_irq(ipi_desc[i]);
                ^
Completed OK
# rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4
# Build took: 0:07:44.765850