# git rev-parse -q --verify abe22c0dd0c554ed01dd6bb9ec849797585e91aa^{commit}
abe22c0dd0c554ed01dd6bb9ec849797585e91aa
already have revision, skipping fetch
# git checkout -q -f -B kisskb abe22c0dd0c554ed01dd6bb9ec849797585e91aa
# git clean -qxdf
# < git log -1
# commit abe22c0dd0c554ed01dd6bb9ec849797585e91aa
# Author: Russell Currey <ruscur@russell.cc>
# Date:   Tue Feb 23 17:02:27 2021 +1000
# 
#     selftests/powerpc: Fix L1D flushing tests for Power10
#     
#     The rfi_flush and entry_flush selftests work by using the PM_LD_MISS_L1
#     perf event to count L1D misses.  The value of this event has changed
#     over time:
#     
#     - Power7 uses 0x400f0
#     - Power8 and Power9 use both 0x400f0 and 0x3e054
#     - Power10 uses only 0x3e054
#     
#     Rather than relying on raw values, configure perf to count L1D read
#     misses in the most explicit way available.
#     
#     This fixes the selftests to work on systems without 0x400f0 as
#     PM_LD_MISS_L1, and should change no behaviour for systems that the tests
#     already worked on.
#     
#     The only potential downside is that referring to a specific perf event
#     requires PMU support implemented in the kernel for that platform.
#     
#     Signed-off-by: Russell Currey <ruscur@russell.cc>
#     Acked-by: Daniel Axtens <dja@axtens.net>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210223070227.2916871-1-ruscur@russell.cc
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 abe22c0dd0c554ed01dd6bb9ec849797585e91aa
# < make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# < make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_x86_64_defconfig_x86_64-gcc8
# Build took: 0:02:28.243030