# git rev-parse -q --verify 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931^{commit} 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 already have revision, skipping fetch # git checkout -q -f -B kisskb 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 # git clean -qxdf # < git log -1 # commit 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 # Author: Nathan Lynch # Date: Mon Mar 15 03:00:45 2021 -0500 # # powerpc/pseries/mobility: handle premature return from H_JOIN # # The pseries join/suspend sequence in its current form was written with # the assumption that it was the only user of H_PROD and that it needn't # handle spurious successful returns from H_JOIN. That's wrong; # powerpc's paravirt spinlock code uses H_PROD, and CPUs entering # do_join() can be woken prematurely from H_JOIN with a status of # H_SUCCESS as a result. This causes all CPUs to exit the sequence # early, preventing suspend from occurring at all. # # Add a 'done' boolean flag to the pseries_suspend_info struct, and have # the waking thread set it before waking the other threads. Threads # which receive H_SUCCESS from H_JOIN retry if the 'done' flag is still # unset. # # Fixes: 9327dc0aeef3 ("powerpc/pseries/mobility: use stop_machine for join/suspend") # Signed-off-by: Nathan Lynch # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210315080045.460331-3-nathanl@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 274cb1ca2e7ce02cab56f5f4c61a74aeb566f931 # < make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # < make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-objdump: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-objdump: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-objdump: mm/kfence/kfence_test.o: File format not recognized /kisskb/src/lib/bitfield_kunit.c: In function 'test_bitfields_constants': /kisskb/src/lib/bitfield_kunit.c:93:1: warning: the frame size of 7432 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info mm/kfence/kfence_test.o: file not recognized: File format not recognized make[3]: *** [/kisskb/src/scripts/Makefile.modfinal:78: mm/kfence/kfence_test.ko] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.modpost:138: __modpost] Error 2 make[1]: *** [/kisskb/src/Makefile:1440: modules] Error 2 make: *** [Makefile:215: __sub-make] Error 2 Command 'make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc8 # Build took: 0:26:28.290616