# git rev-parse -q --verify e44fbdb68049539de9923ce4bad2d277aef54892^{commit}
e44fbdb68049539de9923ce4bad2d277aef54892
already have revision, skipping fetch
# git checkout -q -f -B kisskb e44fbdb68049539de9923ce4bad2d277aef54892
# git clean -qxdf
# < git log -1
# commit e44fbdb68049539de9923ce4bad2d277aef54892
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Mon Jul 12 11:36:50 2021 +1000
# 
#     KVM: PPC: Book3S HV P9: Fix guest TM support
#     
#     The conversion to C introduced several bugs in TM handling that can
#     cause host crashes with TM bad thing interrupts. Mostly just simple
#     typos or missed logic in the conversion that got through due to my
#     not testing TM in the guest sufficiently.
#     
#     - Early TM emulation for the softpatch interrupt should be done if fake
#       suspend mode is _not_ active.
#     
#     - Early TM emulation wants to return immediately to the guest so as to
#       not doom transactions unnecessarily.
#     
#     - And if exiting from the guest, the host MSR should include the TM[S]
#       bit if the guest was T/S, before it is treclaimed.
#     
#     After this fix, all the TM selftests pass when running on a P9 processor
#     that implements TM with softpatch interrupt.
#     
#     Fixes: 89d35b2391015 ("KVM: PPC: Book3S HV P9: Implement the rest of the P9 path in C")
#     Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210712013650.376325-1-npiggin@gmail.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 e44fbdb68049539de9923ce4bad2d277aef54892
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8548_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  85xx/tqm8548_defconfig
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8548_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8548_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8548_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_85xx_tqm8548_defconfig_powerpc-gcc5
# Build took: 0:00:19.973732