# 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-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < git log --format=%s --max-count=1 faf37c44a105f3608115785f17cbbf3500f8bc71
# < make -s -j 120 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 120 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64
# Build took: 0:00:27.077552