# 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-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 abe22c0dd0c554ed01dd6bb9ec849797585e91aa
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_ge_imp3a_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  85xx/ge_imp3a_defconfig
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_ge_imp3a_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_ge_imp3a_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_ge_imp3a_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x9616f0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xa00000)
Image Name:   Linux-5.11.0-93906-gabe22c0dd0c
Created:      Fri Feb 26 04:15:50 2021
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    4713994 Bytes = 4603.51 KiB = 4.50 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-next_85xx_ge_imp3a_defconfig_powerpc-gcc4.9
# Build took: 0:01:12.812301