# git gc
# git rev-parse -q --verify 0c83b277ada72b585e6a3e52b067669df15bcedb^{commit}
0c83b277ada72b585e6a3e52b067669df15bcedb
already have revision, skipping fetch
# git checkout -q -f -B kisskb 0c83b277ada72b585e6a3e52b067669df15bcedb
# git clean -qxdf
# < git log -1
# commit 0c83b277ada72b585e6a3e52b067669df15bcedb
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Tue Aug 4 22:44:06 2020 +1000
# 
#     powerpc: Fix circular dependency between percpu.h and mmu.h
#     
#     Recently random.h started including percpu.h (see commit
#     f227e3ec3b5c ("random32: update the net random state on interrupt and
#     activity")), which broke corenet64_smp_defconfig:
#     
#       In file included from /linux/arch/powerpc/include/asm/paca.h:18,
#                        from /linux/arch/powerpc/include/asm/percpu.h:13,
#                        from /linux/include/linux/random.h:14,
#                        from /linux/lib/uuid.c:14:
#       /linux/arch/powerpc/include/asm/mmu.h:139:22: error: unknown type name 'next_tlbcam_idx'
#         139 | DECLARE_PER_CPU(int, next_tlbcam_idx);
#     
#     This is due to a circular header dependency:
#       asm/mmu.h includes asm/percpu.h, which includes asm/paca.h, which
#       includes asm/mmu.h
#     
#     Which means DECLARE_PER_CPU() isn't defined when mmu.h needs it.
#     
#     We can fix it by moving the include of paca.h below the include of
#     asm-generic/percpu.h.
#     
#     This moves the include of paca.h out of the #ifdef __powerpc64__, but
#     that is OK because paca.h is almost entirely inside #ifdef
#     CONFIG_PPC64 anyway.
#     
#     It also moves the include of paca.h out of the #ifdef CONFIG_SMP,
#     which could possibly break something, but seems to have no ill
#     effects.
#     
#     Fixes: f227e3ec3b5c ("random32: update the net random state on interrupt and activity")
#     Cc: stable@vger.kernel.org # v5.8
#     Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20200804130558.292328-1-mpe@ellerman.id.au
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 0c83b277ada72b585e6a3e52b067669df15bcedb
# < make -s -j 48 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  defconfig
# < make -s -j 48 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 48 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 48 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_s390-defconfig_s390x-gcc8
# Build took: 0:09:58.745201