# git rev-parse -q --verify faf37c44a105f3608115785f17cbbf3500f8bc71^{commit}
faf37c44a105f3608115785f17cbbf3500f8bc71
already have revision, skipping fetch
# git checkout -q -f -B kisskb faf37c44a105f3608115785f17cbbf3500f8bc71
# git clean -qxdf
# < git log -1
# commit faf37c44a105f3608115785f17cbbf3500f8bc71
# Author: Michael Neuling <mikey@neuling.org>
# Date:   Fri May 18 11:37:42 2018 +1000
# 
#     powerpc/64s: Clear PCR on boot
#     
#     Clear the PCR (Processor Compatibility Register) on boot to ensure we
#     are not running in a compatibility mode.
#     
#     We've seen this cause problems when a crash (and kdump) occurs while
#     running compat mode guests. The kdump kernel then runs with the PCR
#     set and causes problems. The symptom in the kdump kernel (also seen in
#     petitboot after fast-reboot) is early userspace programs taking
#     sigills on newer instructions (seen in libc).
#     
#     Signed-off-by: Michael Neuling <mikey@neuling.org>
#     Cc: stable@vger.kernel.org
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/br-microblaze-full-2016.08-613-ge98b4dd/bin/microblazeel-linux-gcc --version
# < git log --format=%s --max-count=1 faf37c44a105f3608115785f17cbbf3500f8bc71
# < make -s -j 120 ARCH=microblaze O=/kisskb/build/powerpc-fixes_mmu_defconfig_microblaze CROSS_COMPILE=/opt/cross/kisskb/br-microblaze-full-2016.08-613-ge98b4dd/bin/microblazeel-linux-  mmu_defconfig
# make -s -j 120 ARCH=microblaze O=/kisskb/build/powerpc-fixes_mmu_defconfig_microblaze CROSS_COMPILE=/opt/cross/kisskb/br-microblaze-full-2016.08-613-ge98b4dd/bin/microblazeel-linux-  
Kernel: arch/microblaze/boot/linux.bin is ready  (#1)
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_mmu_defconfig_microblaze
# Build took: 0:00:23.595139