# git rev-parse -q --verify 4399efc3f2f04ad8e6948461795de04ed1358402^{commit} 4399efc3f2f04ad8e6948461795de04ed1358402 already have revision, skipping fetch # git checkout -q -f -B kisskb 4399efc3f2f04ad8e6948461795de04ed1358402 # git clean -qxdf # < git log -1 # commit 4399efc3f2f04ad8e6948461795de04ed1358402 # Author: Gustavo Luiz Duarte # Date: Mon Feb 3 13:09:06 2020 -0300 # # selftests/powerpc: Don't rely on segfault to rerun the test # # The test case tm-signal-context-force-tm expects a segfault to happen on # returning from signal handler, and then does a setcontext() to run the test # again. However, the test doesn't always segfault, causing the test to run a # single time. # # This patch fixes the test by putting it within a loop and jumping, via # setcontext, just prior to the loop in case it segfaults. This way we get the # desired behavior (run the test COUNT_MAX times) regardless if it segfaults or # not. This also reduces the use of setcontext for control flow logic, keeping it # only in the segfault handler. # # Also, since 'count' is changed within the signal handler, it is declared as # volatile to prevent any compiler optimization getting confused with # asynchronous changes. # # Signed-off-by: Gustavo Luiz Duarte # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20200203160906.24482-3-gustavold@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 4399efc3f2f04ad8e6948461795de04ed1358402 # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc64_defconfig # Added to kconfig CONFIG_PPC_RADIX_MMU=n # yes \n | make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- oldconfig yes: standard output: Broken pipe # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash'. arch/powerpc/platforms/pseries/lpar.o:(.toc+0x0): undefined reference to `mmu_pid_bits' make[1]: *** [/kisskb/src/Makefile:1078: vmlinux] Error 1 make: *** [Makefile:179: sub-make] Error 2 Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-fixes_ppc64_defconfig+NO_RADIX_powerpc-gcc8 # Build took: 0:04:22.568574