# git rev-parse -q --verify 2c669ef6979c370f98d4b876e54f19613c81e075^{commit} 2c669ef6979c370f98d4b876e54f19613c81e075 already have revision, skipping fetch # git checkout -q -f -B kisskb 2c669ef6979c370f98d4b876e54f19613c81e075 # git clean -qxdf # < git log -1 # commit 2c669ef6979c370f98d4b876e54f19613c81e075 # Author: Valentin Schneider # Date: Wed Jul 7 19:38:31 2021 +0100 # # powerpc/preempt: Don't touch the idle task's preempt_count during hotplug # # Powerpc currently resets a CPU's idle task preempt_count to 0 before # said task starts executing the secondary startup routine (and becomes an # idle task proper). # # This conflicts with commit f1a0a376ca0c ("sched/core: Initialize the # idle task with preemption disabled"). # # which initializes all of the idle tasks' preempt_count to # PREEMPT_DISABLED during smp_init(). Note that this was superfluous # before said commit, as back then the hotplug machinery would invoke # init_idle() via idle_thread_get(), which would have already reset the # CPU's idle task's preempt_count to PREEMPT_ENABLED. # # Get rid of this preempt_count write. # # Fixes: f1a0a376ca0c ("sched/core: Initialize the idle task with preemption disabled") # Reported-by: Bharata B Rao # Signed-off-by: Valentin Schneider # Tested-by: Guenter Roeck # Tested-by: Bharata B Rao # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210707183831.2106509-1-valentin.schneider@arm.com # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 2c669ef6979c370f98d4b876e54f19613c81e075 # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_83xx_mpc834x_itx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 83xx/mpc834x_itx_defconfig # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_83xx_mpc834x_itx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_83xx_mpc834x_itx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_83xx_mpc834x_itx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x757754) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x757754) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) INFO: Uncompressed kernel (size 0x747144) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x800000) Image Name: Linux-5.13.0-g2c669ef6979c Created: Thu Jul 15 15:42:31 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3248413 Bytes = 3172.28 KiB = 3.10 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.13.0-g2c669ef6979c Created: Thu Jul 15 15:42:31 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3276923 Bytes = 3200.12 KiB = 3.13 MiB Load Address: 00800000 Entry Point: 00800294 Image Name: Linux-5.13.0-g2c669ef6979c Created: Thu Jul 15 15:42:31 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3276251 Bytes = 3199.46 KiB = 3.12 MiB Load Address: 00800000 Entry Point: 00800294 Completed OK # rm -rf /kisskb/build/powerpc-fixes_83xx_mpc834x_itx_defconfig_powerpc-gcc5 # Build took: 0:01:08.533707