# git rev-parse -q --verify de17ea0120bbdcec33983489c58dc6acb2281c3c^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
# git rev-parse -q --verify de17ea0120bbdcec33983489c58dc6acb2281c3c^{commit}
de17ea0120bbdcec33983489c58dc6acb2281c3c
# git checkout -q -f -B kisskb de17ea0120bbdcec33983489c58dc6acb2281c3c
# git clean -qxdf
# < git log -1
# commit de17ea0120bbdcec33983489c58dc6acb2281c3c
# Author: Cédric Le Goater <clg@kaod.org>
# Date:   Tue Jun 29 15:15:42 2021 +0200
# 
#     powerpc/xive: Do not skip CPU-less nodes when creating the IPIs
#     
#     On PowerVM, CPU-less nodes can be populated with hot-plugged CPUs at
#     runtime. Today, the IPI is not created for such nodes, and hot-plugged
#     CPUs use a bogus IPI, which leads to soft lockups.
#     
#     We could create the node IPI on demand but it is a bit complex because
#     this code would be called under bringup_up() and some IRQ locking is
#     being done. The simplest solution is to create the IPIs for all nodes
#     at startup.
#     
#     Fixes: 7dcc37b3eff9 ("powerpc/xive: Map one IPI interrupt per node")
#     Cc: stable@vger.kernel.org # v5.13
#     Reported-by: Geetika Moolchandani <Geetika.Moolchandani1@ibm.com>
#     Signed-off-by: Cédric Le Goater <clg@kaod.org>
#     Tested-by: Laurent Vivier <lvivier@redhat.com>
#     Tested-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20210629131542.743888-1-clg@kaod.org
# < /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 de17ea0120bbdcec33983489c58dc6acb2281c3c
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64le_defconfig
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_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_ppc64le_defconfig_powerpc-gcc5
# Build took: 0:02:03.255349