# git rev-parse -q --verify 556baad64ee9f87db99de05be3b53edbd7beeaa1^{commit}
556baad64ee9f87db99de05be3b53edbd7beeaa1
already have revision, skipping fetch
# git checkout -q -f -B kisskb 556baad64ee9f87db99de05be3b53edbd7beeaa1
# git clean -qxdf
# < git log -1
# commit 556baad64ee9f87db99de05be3b53edbd7beeaa1
# Author: Jordan Niethe <jniethe5@gmail.com>
# Date:   Thu Feb 25 14:21:07 2021 +1100
# 
#     selftests/powerpc: Suggest memtrace instead of /dev/mem for ci memory
#     
#     The suggested alternative for getting cache-inhibited memory with 'mem='
#     and /dev/mem is pretty hacky. Also, PAPR guests do not allow system
#     memory to be mapped cache-inhibited so despite /dev/mem being available
#     this will not work which can cause confusion.  Instead recommend using
#     the memtrace buffers. memtrace is only available on powernv so there
#     will not be any chance of trying to do this in a guest.
#     
#     Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210225032108.1458352-2-jniethe5@gmail.com
# < /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 556baad64ee9f87db99de05be3b53edbd7beeaa1
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64e_defconfig+KEXEC_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64e_defconfig
# Added to kconfig CONFIG_KEXEC=y
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64e_defconfig+KEXEC_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_ppc64e_defconfig+KEXEC_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:2934:warning: override: reassigning to symbol KEXEC
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64e_defconfig+KEXEC_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xd33260) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xe00000)
Image Name:   Linux-5.12.0-rc3-95808-g556baad6
Created:      Sun Apr  4 02:11:40 2021
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    5342822 Bytes = 5217.60 KiB = 5.10 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-next_ppc64e_defconfig+KEXEC_powerpc-gcc4.9
# Build took: 0:01:56.776809