# git rev-parse -q --verify 0fa6831811f62cfc10415d731bcf9fde2647ad81^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
# git rev-parse -q --verify 0fa6831811f62cfc10415d731bcf9fde2647ad81^{commit}
0fa6831811f62cfc10415d731bcf9fde2647ad81
# git checkout -q -f -B kisskb 0fa6831811f62cfc10415d731bcf9fde2647ad81
# git clean -qxdf
# < git log -1
# commit 0fa6831811f62cfc10415d731bcf9fde2647ad81
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Tue Oct 4 15:11:57 2022 +1000
# 
#     powerpc/64: Fix msr_check_and_set/clear MSR[EE] race
#     
#     irq soft-masking means that when Linux irqs are disabled, the MSR[EE]
#     value can change from 1 to 0 asynchronously: if a masked interrupt of
#     the PACA_IRQ_MUST_HARD_MASK variety fires while irqs are disabled,
#     the masked handler will return with MSR[EE]=0.
#     
#     This means a sequence like mtmsr(mfmsr() | MSR_FP) is racy if it can
#     be called with local irqs disabled, unless a hard_irq_disable has been
#     done.
#     
#     Reported-by: Sachin Sant <sachinp@linux.ibm.com>
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20221004051157.308999-2-npiggin@gmail.com
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/m68k-linux/bin/m68k-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/m68k-linux/bin/m68k-linux-ld --version
# < git log --format=%s --max-count=1 0fa6831811f62cfc10415d731bcf9fde2647ad81
# < make -s -j 24 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/m68k-linux/bin/m68k-linux-  defconfig
# < make -s -j 24 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/m68k-linux/bin/m68k-linux-  help
# make -s -j 24 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/m68k-linux/bin/m68k-linux-  olddefconfig
# make -s -j 24 ARCH=m68k O=/kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/m68k-linux/bin/m68k-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_m68k-defconfig_m68k-gcc11
# Build took: 0:03:24.088105