# git rev-parse -q --verify b7a2d47af3a0d58527e3a53ab85f597cd495b7ce^{commit}
b7a2d47af3a0d58527e3a53ab85f597cd495b7ce
already have revision, skipping fetch
# git checkout -q -f -B kisskb b7a2d47af3a0d58527e3a53ab85f597cd495b7ce
# git clean -qxdf
# < git log -1
# commit b7a2d47af3a0d58527e3a53ab85f597cd495b7ce
# Author: Jordan Niethe <jniethe5@gmail.com>
# Date:   Mon Feb 8 14:29:57 2021 +1100
# 
#     selftests/powerpc: Test for spurious kernel memory faults on radix
#     
#     Previously when mapping kernel memory on radix, no ptesync was
#     included which would periodically lead to unhandled spurious faults.
#     Mapping kernel memory is used when code patching with Strict RWX
#     enabled. As suggested by Chris Riedl, turning ftrace on and off does a
#     large amount of code patching so is a convenient way to see this kind
#     of fault.
#     
#     Add a selftest to try and trigger this kind of a spurious fault. It
#     tests for 30 seconds which is usually long enough for the issue to
#     show up.
#     
#     Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
#     [mpe: Rename it to better reflect what it does, rather than the symptom]
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210208032957.1232102-2-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 b7a2d47af3a0d58527e3a53ab85f597cd495b7ce
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_amigaone_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  amigaone_defconfig
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_amigaone_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_amigaone_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_amigaone_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/block/genhd.c: In function 'diskstats_show':
/kisskb/src/block/genhd.c:1517:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
INFO: Uncompressed kernel (size 0x79e3d0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x800000)
Image Name:   Linux-5.11.0-rc2+
Created:      Fri Feb 12 04:18:39 2021
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3369890 Bytes = 3290.91 KiB = 3.21 MiB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-5.11.0-rc2+
Created:      Fri Feb 12 04:18:39 2021
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3399852 Bytes = 3320.17 KiB = 3.24 MiB
Load Address: 00800000
Entry Point:  00800144
Completed OK
# rm -rf /kisskb/build/powerpc-next_amigaone_defconfig_powerpc-gcc4.9
# Build took: 0:00:34.633582