# git rev-parse -q --verify f5747ed3179b5a9830487e84162100c6681624b7^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify f5747ed3179b5a9830487e84162100c6681624b7^{commit}
f5747ed3179b5a9830487e84162100c6681624b7
# git checkout -q -f -B kisskb f5747ed3179b5a9830487e84162100c6681624b7
# git clean -qxdf
# < git log -1
# commit f5747ed3179b5a9830487e84162100c6681624b7
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Fri Dec 25 21:37:08 2020 +1100
# 
#     genirq: Fix export of irq_to_desc() for powerpc KVM
#     
#     Commit 64a1b95bb9fe ("genirq: Restrict export of irq_to_desc()")
#     removed the export of irq_to_desc() unless powerpc KVM is being built,
#     because there is still a use of irq_to_desc() in modular code there.
#     
#     However it used:
#     
#       #ifdef CONFIG_KVM_BOOK3S_64_HV
#     
#     Which doesn't work when that symbol is =m, leading to a build failure:
#     
#       ERROR: modpost: "irq_to_desc" [arch/powerpc/kvm/kvm-hv.ko] undefined!
#     
#     Fix it by checking for the definedness of the correct symbol which is
#     CONFIG_KVM_BOOK3S_64_HV_MODULE.
#     
#     Fixes: 64a1b95bb9fe ("genirq: Restrict export of irq_to_desc()")
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /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 f5747ed3179b5a9830487e84162100c6681624b7
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64e_defconfig
# Added to kconfig CONFIG_SMP=n
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0xc66cd0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xd00000)
Image Name:   Linux-5.10.0-gf5747ed3179b
Created:      Fri Dec 25 22:41:01 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    5000194 Bytes = 4883.00 KiB = 4.77 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ppc64e_defconfig+UP_powerpc-gcc5
# Build took: 0:01:50.460727