# git rev-parse -q --verify 13b174c22f059e118b36e4b69cedd9ec92fe1ab4^{commit}
13b174c22f059e118b36e4b69cedd9ec92fe1ab4
already have revision, skipping fetch
# git checkout -q -f -B kisskb 13b174c22f059e118b36e4b69cedd9ec92fe1ab4
# git clean -qxdf
# git log -1
commit 13b174c22f059e118b36e4b69cedd9ec92fe1ab4
Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date:   Wed Jul 19 14:49:46 2017 +1000

    powerpc: Remove old unused icswx based coprocessor support
    
    We have a whole pile of unused code to maintain the ACOP register,
    allocate coprocessor PIDs and handle ACOP faults. This mechanism
    was used for the HFI adapter on POWER7 which is dead and gone and
    whose driver never went upstream. It was used on some A2 core based
    stuff that also never saw the light of day.
    
    Take out all that code.
    
    There is still some POWER8 coprocessor code that uses icswx but it's
    kernel only and thus doesn't use any of that infrastructure.
    
    Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 13b174c22f059e118b36e4b69cedd9ec92fe1ab4
# < make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/mpe_44x_iss476-smp_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  44x/iss476-smp_defconfig
warning: (PPC_PSERIES && PM_SLEEP_SMP) selects HOTPLUG_CPU which has unmet direct dependencies (SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE))
warning: (PPC_PSERIES && PM_SLEEP_SMP) selects HOTPLUG_CPU which has unmet direct dependencies (SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE))
# make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/mpe_44x_iss476-smp_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
make[1]: Entering directory '/home/kisskb/slave/build/mpe_44x_iss476-smp_defconfig_powerpc'
  GEN     ./Makefile
scripts/kconfig/conf  --silentoldconfig Kconfig
warning: (PPC_PSERIES && PM_SLEEP_SMP) selects HOTPLUG_CPU which has unmet direct dependencies (SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE))
warning: (PPC_PSERIES && PM_SLEEP_SMP) selects HOTPLUG_CPU which has unmet direct dependencies (SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE))
  CHK     include/config/kernel.release
  GEN     ./Makefile
  WRAP    arch/powerpc/include/generated/uapi/asm/param.h
  WRAP    arch/powerpc/include/generated/uapi/asm/statfs.h
  WRAP    arch/powerpc/include/generated/uapi/asm/poll.h
  WRAP    arch/powerpc/include/generated/uapi/asm/resource.h
  WRAP    arch/powerpc/include/generated/uapi/asm/sockios.h
  CHK     include/generated/uapi/linux/version.h
  UPD     include/generated/uapi/linux/version.h
  UPD     include/config/kernel.release
  Using /home/kisskb/slave/src as source for kernel
  WRAP    arch/powerpc/include/generated/asm/clkdev.h
  WRAP    arch/powerpc/include/generated/asm/irq_regs.h
  WRAP    arch/powerpc/include/generated/asm/local64.h
  WRAP    arch/powerpc/include/generated/asm/div64.h
  WRAP    arch/powerpc/include/generated/asm/export.h
  WRAP    arch/powerpc/include/generated/asm/irq_work.h
  WRAP    arch/powerpc/include/generated/asm/mcs_spinlock.h
  WRAP    arch/powerpc/include/generated/asm/preempt.h
  WRAP    arch/powerpc/include/generated/asm/rwsem.h
  WRAP    arch/powerpc/include/generated/asm/vtime.h
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h
  HOSTCC  scripts/sortextable
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/data.o
  CC      scripts/mod/empty.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/mod/mk_elfconfig
  SHIPPED scripts/dtc/dtc-lexer.lex.c
  HOSTCC  scripts/dtc/treesource.o
  SHIPPED scripts/dtc/dtc-parser.tab.c
  HOSTCC  scripts/dtc/util.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  CC      scripts/mod/devicetable-offsets.s
  SHIPPED scripts/dtc/dtc-parser.tab.h
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  CHK     scripts/mod/devicetable-offsets.h
  UPD     scripts/mod/devicetable-offsets.h
  CHK     include/generated/timeconst.h
  CC      kernel/bounds.s
  UPD     include/generated/timeconst.h
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/sumversion.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/modpost.o
  CHK     include/generated/bounds.h
  UPD     include/generated/bounds.h
  CC      arch/powerpc/kernel/asm-offsets.s
  HOSTLD  scripts/dtc/dtc
  CHK     include/generated/asm-offsets.h
  UPD     include/generated/asm-offsets.h
  CALL    /home/kisskb/slave/src/scripts/checksyscalls.sh
  HOSTLD  scripts/mod/modpost
  HOSTCC  usr/gen_init_cpio
  CC      init/main.o
  CHK     include/generated/compile.h
  CC      init/do_mounts.o
  CC      init/initramfs.o
  CC      init/do_mounts_rd.o
  CC      init/init_task.o
  CC      init/do_mounts_initrd.o
  UPD     include/generated/compile.h
  CC      init/version.o
  CC      arch/powerpc/kernel/syscalls.o
  CC      arch/powerpc/kernel/irq.o
  CC      arch/powerpc/mm/fault.o
  CC      arch/powerpc/kernel/align.o
  CC      arch/powerpc/kernel/signal_32.o
  CC      arch/powerpc/kernel/ptrace.o
  CC      arch/powerpc/kernel/cputable.o
  CC      arch/powerpc/mm/pgtable_32.o
  CC      arch/powerpc/mm/pgtable.o
  CC      arch/powerpc/mm/mmap.o
  CC      arch/powerpc/kernel/signal.o
  CC      arch/powerpc/kernel/pmc.o
  CC      arch/powerpc/mm/init_32.o
  CPP     arch/powerpc/kernel/systbl_chk.i
  CC      arch/powerpc/mm/mem.o
  CC      arch/powerpc/kernel/idle.o
  CC      arch/powerpc/kernel/process.o
  CC      arch/powerpc/kernel/io.o
  AS      arch/powerpc/kernel/misc_32.o
  AS      arch/powerpc/kernel/misc.o
  CC      arch/powerpc/kernel/time.o
  CC      arch/powerpc/kernel/vdso.o
  CC      arch/powerpc/kernel/of_platform.o
  CC      arch/powerpc/kernel/prom.o
  CC      arch/powerpc/kernel/prom_parse.o
  CC      arch/powerpc/kernel/traps.o
  CC      arch/powerpc/kernel/udbg.o
  CC      arch/powerpc/kernel/setup-common.o
  CC      arch/powerpc/mm/init-common.o
  CC      arch/powerpc/mm/mmu_context_nohash.o
  AS      arch/powerpc/mm/tlb_nohash_low.o
  CC      arch/powerpc/kernel/dma.o
  CC      arch/powerpc/kernel/sysfs.o
  CC      arch/powerpc/mm/tlb_nohash.o
  CC      arch/powerpc/mm/hugetlbpage.o
  CC      arch/powerpc/mm/44x_mmu.o
  CC      arch/powerpc/kernel/cacheinfo.o
  CC      arch/powerpc/kernel/trace/trace_clock.o
  CC      arch/powerpc/kernel/proc_powerpc.o
  CC      arch/powerpc/kernel/smp-tbsync.o
  CC      arch/powerpc/kernel/module.o
  AS      arch/powerpc/lib/string.o
  LDS     arch/powerpc/kernel/vdso32/vdso32.lds
  CC      arch/powerpc/lib/alloc.o
  CC      arch/powerpc/sysdev/mpic.o
  CC      arch/powerpc/kernel/module_32.o
  VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o
  CC      arch/powerpc/lib/code-patching.o
  AR      arch/powerpc/kernel/trace/built-in.o
  VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o
  GEN     usr/initramfs_data.cpio
  VDSO32A arch/powerpc/kernel/vdso32/datapage.o
  AS      arch/powerpc/platforms/44x/misc_44x.o
  VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o
  AR      arch/powerpc/crypto/built-in.o
  AS      arch/powerpc/kernel/cpu_setup_44x.o
  CC      arch/powerpc/platforms/44x/iss4xx.o
  AS      arch/powerpc/kernel/entry_32.o
  CC      arch/powerpc/kernel/setup_32.o
  AS      usr/initramfs_data.o
  VDSO32A arch/powerpc/kernel/vdso32/note.o
  CC      arch/powerpc/kernel/smp.o
  CC      arch/powerpc/kernel/uprobes.o
  AR      usr/built-in.o
  CC      arch/powerpc/kernel/legacy_serial.o
  AR      arch/powerpc/net/built-in.o
  CC      arch/powerpc/kernel/udbg_16550.o
  CC      arch/powerpc/kernel/stacktrace.o
/home/kisskb/slave/src/arch/powerpc/mm/fault.c: In function '__do_page_fault':
/home/kisskb/slave/src/arch/powerpc/mm/fault.c:417:4: error: unknown conversion type character '=' in format [-Werror=format]
/home/kisskb/slave/src/arch/powerpc/mm/fault.c:417:4: error: too many arguments for format [-Werror=format-extra-args]
  AS      arch/powerpc/sysdev/dcr-low.o
  CC      arch/powerpc/sysdev/uic.o
  VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg
  CC      arch/powerpc/lib/feature-fixups.o
cc1: all warnings being treated as errors
/home/kisskb/slave/src/scripts/Makefile.build:302: recipe for target 'arch/powerpc/mm/fault.o' failed
make[2]: *** [arch/powerpc/mm/fault.o] Error 1
make[2]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/kernel/iomap.o
  AS      arch/powerpc/lib/div64.o
  OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so
  CC      arch/powerpc/sysdev/ppc4xx_soc.o
  AS      arch/powerpc/kernel/vdso32/vdso32_wrapper.o
  AS      arch/powerpc/lib/copy_32.o
  AS      arch/powerpc/kernel/head_44x.o
  AS      arch/powerpc/lib/crtsavres.o
  LDS     arch/powerpc/kernel/vmlinux.lds
  CC      arch/powerpc/sysdev/of_rtc.o
  CC      arch/powerpc/perf/callchain.o
  AS      arch/powerpc/kernel/fpu.o
  CALL    /home/kisskb/slave/src/arch/powerpc/kernel/systbl_chk.sh
  CC      arch/powerpc/sysdev/ppc4xx_cpm.o
  AR      arch/powerpc/kernel/vdso32/built-in.o
  CC      arch/powerpc/sysdev/dcr.o
  CC      arch/powerpc/lib/sstep.o
  AS      arch/powerpc/lib/checksum_32.o
  CC      arch/powerpc/lib/checksum_wrappers.o
  AS      arch/powerpc/kernel/systbl.o
  CC      arch/powerpc/perf/perf_regs.o
  AS      arch/powerpc/lib/ldstfp.o
  CC      arch/powerpc/math-emu/math.o
  CC      arch/powerpc/math-emu/fre.o
  CC      arch/powerpc/math-emu/fsqrts.o
  CC      arch/powerpc/math-emu/fsqrt.o
  CC      arch/powerpc/math-emu/frsqrtes.o
  CC      arch/powerpc/math-emu/mtfsf.o
  CC      arch/powerpc/math-emu/mtfsfi.o
/home/kisskb/slave/src/Makefile:1019: recipe for target 'arch/powerpc/mm' failed
make[1]: *** [arch/powerpc/mm] Error 2
make[1]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/math-emu/fabs.o
  CC      arch/powerpc/math-emu/fadd.o
  CC      arch/powerpc/math-emu/fadds.o
  CC      arch/powerpc/math-emu/fcmpu.o
  CC      arch/powerpc/math-emu/fcmpo.o
  CC      arch/powerpc/math-emu/fctiw.o
  CC      arch/powerpc/math-emu/fctiwz.o
  CC      arch/powerpc/math-emu/fdiv.o
  CC      arch/powerpc/math-emu/fdivs.o
  CC      arch/powerpc/math-emu/fmadd.o
  CC      arch/powerpc/math-emu/fmadds.o
  CC      arch/powerpc/math-emu/fmsub.o
  CC      arch/powerpc/math-emu/fmsubs.o
  CC      arch/powerpc/math-emu/fmul.o
  CC      arch/powerpc/math-emu/fmuls.o
  CC      arch/powerpc/math-emu/fnabs.o
  CC      arch/powerpc/math-emu/fneg.o
  CC      arch/powerpc/math-emu/fnmadd.o
  CC      arch/powerpc/math-emu/fnmadds.o
  CC      arch/powerpc/math-emu/fnmsub.o
  CC      arch/powerpc/math-emu/fnmsubs.o
  CC      arch/powerpc/math-emu/fres.o
  CC      arch/powerpc/math-emu/frsp.o
  CC      arch/powerpc/math-emu/fsel.o
  CC      arch/powerpc/math-emu/lfs.o
  CC      arch/powerpc/math-emu/frsqrte.o
  CC      arch/powerpc/math-emu/fsub.o
  AR      init/mounts.o
  AR      init/built-in.o
  CC      arch/powerpc/math-emu/fsubs.o
  CC      arch/powerpc/math-emu/mffs.o
  CC      arch/powerpc/math-emu/mcrfs.o
  CC      arch/powerpc/math-emu/mtfsb1.o
  CC      arch/powerpc/math-emu/stfiwx.o
  CC      arch/powerpc/math-emu/mtfsb0.o
  CC      arch/powerpc/math-emu/stfs.o
  AR      arch/powerpc/platforms/44x/built-in.o
  CC      arch/powerpc/math-emu/fmr.o
  CC      arch/powerpc/math-emu/lfd.o
  CC      arch/powerpc/math-emu/stfd.o
  AR      arch/powerpc/platforms/built-in.o
  CC      kernel/fork.o
  CC      kernel/exec_domain.o
  CC      kernel/panic.o
  CC      kernel/exit.o
  CC      kernel/ptrace.o
  CC      kernel/cpu.o
  CC      kernel/resource.o
  CC      kernel/capability.o
  CC      kernel/signal.o
  CC      kernel/sys.o
  CC      kernel/kmod.o
  CC      kernel/softirq.o
  CC      kernel/user.o
  CC      kernel/sysctl.o
  CC      kernel/sysctl_binary.o
  AR      arch/powerpc/perf/built-in.o
  CC      kernel/pid.o
  CC      kernel/workqueue.o
  CC      kernel/task_work.o
  CC      kernel/extable.o
  CC      kernel/params.o
  CC      kernel/sys_ni.o
  CC      kernel/kthread.o
  CC      kernel/nsproxy.o
  CC      kernel/notifier.o
  CC      kernel/async.o
  CC      kernel/range.o
  CC      kernel/reboot.o
  CC      kernel/groups.o
  CC      kernel/ucount.o
  CC      kernel/smpboot.o
  CC      kernel/cred.o
  CC      kernel/ksysfs.o
  CC      kernel/bpf/core.o
  AR      arch/powerpc/kernel/built-in.o
  AR      kernel/livepatch/built-in.o
  CC      kernel/events/core.o
  CC      kernel/events/callchain.o
  CC      kernel/events/ring_buffer.o
  CC      kernel/events/uprobes.o
  CC      kernel/printk/printk.o
  CC      kernel/power/qos.o
  AR      arch/powerpc/math-emu/built-in.o
  CC      kernel/locking/mutex.o
  CC      kernel/power/main.o
  CC      kernel/rcu/update.o
  CC      kernel/irq/irqdesc.o
  CC      kernel/freezer.o
  CC      kernel/profile.o
  CC      kernel/stacktrace.o
  CC      kernel/irq/handle.o
  CC      kernel/sched/core.o
  CC      kernel/time/time.o
  CC      kernel/futex.o
  CC      kernel/time/timer.o
  CC      kernel/trace/trace_clock.o
  AR      arch/powerpc/lib/built-in.o
  CC      kernel/trace/ring_buffer.o
  CC      kernel/smp.o
  CC      kernel/module.o
  CC      kernel/kallsyms.o
  CC      kernel/stop_machine.o
  CC      kernel/hung_task.o
  CC      kernel/seccomp.o
  CC      kernel/utsname_sysctl.o
  CC      kernel/tracepoint.o
  CC      kernel/elfcore.o
  CC      kernel/irq_work.o
  CC      kernel/membarrier.o
  CC      kernel/memremap.o
  CC      kernel/trace/trace.o
  CC      kernel/power/process.o
  AR      arch/powerpc/sysdev/built-in.o
  CC      kernel/trace/trace_output.o
  CC      kernel/irq/spurious.o
  CC      kernel/irq/manage.o
  CC      kernel/power/suspend.o
  CC      kernel/power/poweroff.o
  CC      kernel/irq/resend.o
  CC      kernel/irq/chip.o
  CC      kernel/trace/trace_seq.o
  CC      kernel/irq/devres.o
  CC      kernel/irq/dummychip.o
  CC      kernel/irq/irqdomain.o
  CC      kernel/irq/proc.o
  CC      kernel/time/hrtimer.o
  CC      kernel/irq/cpuhotplug.o
  CC      kernel/time/timekeeping.o
  CC      kernel/time/ntp.o
  CC      kernel/locking/semaphore.o
  CC      kernel/locking/rwsem.o
  CC      kernel/trace/trace_stat.o
  CC      kernel/irq/pm.o
  CC      kernel/irq/affinity.o
  CC      kernel/trace/trace_printk.o
  CC      kernel/trace/trace_sched_switch.o
  CC      kernel/rcu/sync.o
  CC      kernel/trace/trace_nop.o
  CC      kernel/rcu/srcutree.o
  CC      kernel/trace/blktrace.o
  CC      kernel/rcu/tree.o
  CC      kernel/sched/loadavg.o
  CC      kernel/rcu/rcu_segcblist.o
  CC      kernel/sched/clock.o
  CC      kernel/time/clocksource.o
  CC      kernel/locking/percpu-rwsem.o
  CC      kernel/locking/spinlock.o
/home/kisskb/slave/src/kernel/irq/proc.c: In function 'show_irq_affinity':
/home/kisskb/slave/src/kernel/irq/proc.c:78:27: warning: 'mask' may be used uninitialized in this function [-Wuninitialized]
  CC      kernel/sched/cputime.o
  CC      kernel/locking/osq_lock.o
  CC      kernel/sched/idle_task.o
  CC      kernel/locking/rtmutex.o
  CC      kernel/trace/trace_events.o
/home/kisskb/slave/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/home/kisskb/slave/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
  CC      kernel/printk/printk_safe.o
  CC      kernel/time/timer_list.o
  CC      kernel/time/jiffies.o
  CC      kernel/trace/trace_export.o
  CC      kernel/locking/rwsem-xadd.o
  CC      kernel/trace/trace_event_perf.o
  CC      kernel/sched/fair.o
  CC      kernel/trace/trace_events_filter.o
  CC      kernel/time/timeconv.o
  CC      kernel/sched/rt.o
  CC      kernel/trace/trace_events_trigger.o
  CC      kernel/sched/deadline.o
  AR      kernel/power/built-in.o
  CC      kernel/trace/power-traces.o
  CC      kernel/sched/wait.o
  CC      kernel/time/timecounter.o
  CC      kernel/time/alarmtimer.o
  CC      kernel/trace/rpm-traces.o
  CC      kernel/time/posix-cpu-timers.o
  CC      kernel/time/posix-timers.o
  AR      kernel/irq/built-in.o
  CC      kernel/trace/trace_probe.o
  CC      kernel/time/posix-clock.o
  CC      kernel/sched/wait_bit.o
  CC      kernel/sched/swait.o
  CC      kernel/trace/trace_uprobe.o
/home/kisskb/slave/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/home/kisskb/slave/src/kernel/rcu/srcutree.c:118:32: warning: 'levelspread[<Ud820>]' may be used uninitialized in this function [-Wuninitialized]
/home/kisskb/slave/src/kernel/rcu/srcutree.c:66:6: note: 'levelspread[<Ud820>]' was declared here
  CC      kernel/sched/completion.o
  CC      kernel/time/itimer.o
  CC      kernel/sched/idle.o
  CC      kernel/time/clockevents.o
  CC      kernel/time/tick-common.o
  CC      kernel/time/tick-broadcast.o
  CC      kernel/sched/cpupri.o
  CC      kernel/time/timekeeping_debug.o
  CC      kernel/sched/cpudeadline.o
  CC      kernel/sched/topology.o
  CC      kernel/sched/stop_task.o
  CC      kernel/sched/debug.o
  AR      kernel/bpf/built-in.o
  AR      kernel/locking/built-in.o
  AR      kernel/printk/built-in.o
  AR      kernel/time/built-in.o
  AR      kernel/trace/built-in.o
  AR      kernel/sched/built-in.o
  AR      kernel/rcu/built-in.o
  AR      kernel/events/built-in.o
  AR      kernel/built-in.o
make[1]: *** wait: No child processes.  Stop.
Makefile:145: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/mpe_44x_iss476-smp_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ' returned non-zero exit status 2
# rm -rf /home/kisskb/slave/build/mpe_44x_iss476-smp_defconfig_powerpc
# Build took: 0:00:27.956029