# git rev-parse -q --verify c3ea77ab83a1cd36cca6a54206657a4aeb98c49c^{commit}
c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
already have revision, skipping fetch
# git checkout -q -f -B kisskb c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
# git clean -qxdf
# < git log -1
# commit c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
# Author: Joel Stanley <joel@jms.id.au>
# Date:   Wed Sep 2 09:30:11 2020 +0930
# 
#     powerpc: Warn about use of smt_snooze_delay
#     
#     It's not done anything for a long time. Save the percpu variable, and
#     emit a warning to remind users to not expect it to do anything.
#     
#     This uses pr_warn_once instead of pr_warn_ratelimit as testing
#     'ppc64_cpu --smt=off' on a 24 core / 4 SMT system showed the warning
#     to be noisy, as the online/offline loop is slow.
#     
#     Fixes: 3fa8cad82b94 ("powerpc/pseries/cpuidle: smt-snooze-delay cleanup.")
#     Cc: stable@vger.kernel.org # v3.14
#     Signed-off-by: Joel Stanley <joel@jms.id.au>
#     Acked-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20200902000012.3440389-1-joel@jms.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 c3ea77ab83a1cd36cca6a54206657a4aeb98c49c
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  pmac32_defconfig
# Added to kconfig CONFIG_SMP=y
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4112:warning: override: reassigning to symbol SMP
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_pmac32_defconfig+SMP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x98b3e8) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xa00000)
Completed OK
# rm -rf /kisskb/build/powerpc-next_pmac32_defconfig+SMP_powerpc-gcc5
# Build took: 0:01:48.328910