# git rev-parse -q --verify ea721ec55c8a4a166373978b9c8ce77374d684d6^{commit}
ea721ec55c8a4a166373978b9c8ce77374d684d6
already have revision, skipping fetch
# git checkout -q -f -B kisskb ea721ec55c8a4a166373978b9c8ce77374d684d6
# git clean -qxdf
# < git log -1
# commit ea721ec55c8a4a166373978b9c8ce77374d684d6
# 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>
#     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 ea721ec55c8a4a166373978b9c8ce77374d684d6
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  randconfig
KCONFIG_SEED=0xEB8B7EE2
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n
# Added to kconfig CONFIG_UBSAN=n
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4395:warning: override: reassigning to symbol STANDALONE
.config:4397:warning: override: reassigning to symbol MODULE_SIG
.config:4399:warning: override: reassigning to symbol PPC64
.config:4400:warning: override: reassigning to symbol PPC_DISABLE_WERROR
.config:4402:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/eeh.c:1571:12: warning: 'proc_eeh_show' defined but not used [-Wunused-function]
 static int proc_eeh_show(struct seq_file *m, void *v)
            ^
Completed OK
# rm -rf /kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.9
# Build took: 0:02:56.575960