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74f5c5bd747fa90f41875b7dbada0686e616c3c8
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commit 74f5c5bd747fa90f41875b7dbada0686e616c3c8
Author: Breno Leitao <leitao@debian.org>
Date:   Tue Oct 17 16:20:18 2017 -0200

    powerpc/xmon: Check before calling xive functions
    
    Currently xmon could call XIVE functions from OPAL even if the XIVE is
    disabled or does not exist in the system, as in POWER8 machines. This
    causes the following exception:
    
     1:mon> dx
     cpu 0x1: Vector: 700 (Program Check) at [c000000423c93450]
         pc: c00000000009cfa4: opal_xive_dump+0x50/0x68
         lr: c0000000000997b8: opal_return+0x0/0x50
    
    This patch simply checks if XIVE is enabled before calling XIVE
    functions.
    
    Fixes: 243e25112d06 ("powerpc/xive: Native exploitation of the XIVE interrupt controller")
    Suggested-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
    Signed-off-by: Breno Leitao <leitao@debian.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 74f5c5bd747fa90f41875b7dbada0686e616c3c8
# < make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc64_defconfig
# make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_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/powerpc-next_ppc64_defconfig_powerpc'
  GEN     ./Makefile
scripts/kconfig/conf  --silentoldconfig Kconfig
  CHK     include/config/kernel.release
  GEN     ./Makefile
  WRAP    arch/powerpc/include/generated/uapi/asm/param.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
  WRAP    arch/powerpc/include/generated/uapi/asm/statfs.h
  CHK     include/generated/uapi/linux/version.h
  UPD     include/generated/uapi/linux/version.h
  HOSTCC  scripts/basic/bin2c
  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/div64.h
  WRAP    arch/powerpc/include/generated/asm/export.h
  WRAP    arch/powerpc/include/generated/asm/irq_regs.h
  WRAP    arch/powerpc/include/generated/asm/irq_work.h
  WRAP    arch/powerpc/include/generated/asm/local64.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
  WRAP    arch/powerpc/include/generated/asm/msi.h
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/genksyms/genksyms.o
  HOSTCC  scripts/kallsyms
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  CC      scripts/mod/devicetable-offsets.s
  SHIPPED scripts/genksyms/parse.tab.c
  SHIPPED scripts/genksyms/lex.lex.c
  HOSTCC  scripts/pnmtologo
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/conmakehash
  CHK     scripts/mod/devicetable-offsets.h
  UPD     scripts/mod/devicetable-offsets.h
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/sortextable
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  SHIPPED scripts/genksyms/parse.tab.h
  HOSTCC  scripts/genksyms/parse.tab.o
  HOSTCC  scripts/genksyms/lex.lex.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  SHIPPED scripts/dtc/dtc-lexer.lex.c
  SHIPPED scripts/dtc/dtc-parser.tab.h
  SHIPPED scripts/dtc/dtc-parser.tab.c
  HOSTCC  scripts/mod/sumversion.o
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  CHK     include/generated/timeconst.h
  CC      kernel/bounds.s
  UPD     include/generated/timeconst.h
  CHK     include/generated/bounds.h
  UPD     include/generated/bounds.h
  CC      arch/powerpc/kernel/asm-offsets.s
  HOSTLD  scripts/genksyms/genksyms
  HOSTLD  scripts/dtc/dtc
  HOSTLD  scripts/mod/modpost
  CHK     include/generated/asm-offsets.h
  UPD     include/generated/asm-offsets.h
  CALL    /home/kisskb/slave/src/scripts/checksyscalls.sh
  CC      init/main.o
  CHK     include/generated/compile.h
  CC      init/do_mounts.o
  HOSTCC  usr/gen_init_cpio
  CC      init/do_mounts_rd.o
  CC      init/do_mounts_initrd.o
  CC      init/do_mounts_md.o
  CC      init/initramfs.o
  UPD     include/generated/compile.h
  CC      arch/powerpc/mm/fault.o
  AS      arch/powerpc/lib/string.o
  CC      arch/powerpc/kernel/cputable.o
  CC      arch/powerpc/lib/alloc.o
  GEN     usr/initramfs_data.cpio
  AS      usr/initramfs_data.o
  AR      usr/built-in.o
  CC      arch/powerpc/lib/code-patching.o
  CC      arch/powerpc/lib/feature-fixups.o
  CC      arch/powerpc/kernel/ptrace.o
  CC      arch/powerpc/kernel/syscalls.o
  CC      init/init_task.o
  AS      arch/powerpc/lib/checksum_64.o
  CC      arch/powerpc/mm/mem.o
  CC      arch/powerpc/kernel/irq.o
  CC      arch/powerpc/sysdev/mpic.o
  CC      arch/powerpc/lib/checksum_wrappers.o
  CC      arch/powerpc/platforms/cell/cbe_regs.o
  CC      arch/powerpc/platforms/cell/interrupt.o
  CC      arch/powerpc/platforms/cell/pervasive.o
  CC      arch/powerpc/lib/sstep.o
  CC      arch/powerpc/platforms/cell/iommu.o
  CC      init/version.o
  AR      init/mounts.o
  AR      arch/powerpc/math-emu/built-in.o
  CC      arch/powerpc/kernel/align.o
  CC      arch/powerpc/mm/pgtable.o
  CC      arch/powerpc/kernel/signal_32.o
  AR      init/built-in.o
  CC      arch/powerpc/kernel/pmc.o
  AS      arch/powerpc/lib/ldstfp.o
  AS      arch/powerpc/lib/quad.o
  CC      arch/powerpc/kernel/vdso.o
  CC      arch/powerpc/kernel/process.o
  CC      arch/powerpc/mm/mmap.o
  CC      arch/powerpc/mm/init_64.o
  CC      arch/powerpc/platforms/cell/setup.o
  CC      arch/powerpc/platforms/cell/spider-pic.o
  AS      arch/powerpc/lib/feature-fixups-test.o
  AR      arch/powerpc/crypto/built-in.o
  AS [M]  arch/powerpc/crypto/md5-asm.o
  CC [M]  arch/powerpc/crypto/md5-glue.o
  AS [M]  arch/powerpc/crypto/sha1-powerpc-asm.o
  CC [M]  arch/powerpc/crypto/sha1.o
  CC      arch/powerpc/platforms/maple/setup.o
  CC      arch/powerpc/platforms/pasemi/setup.o
  CC      arch/powerpc/platforms/powermac/pic.o
  CC      arch/powerpc/sysdev/mpic_msi.o
  CC      arch/powerpc/mm/pgtable_64.o
  CC      arch/powerpc/mm/init-common.o
  CC      arch/powerpc/platforms/cell/pmu.o
  AS [M]  arch/powerpc/crypto/crc32c-vpmsum_asm.o
  CC [M]  arch/powerpc/crypto/crc32c-vpmsum_glue.o
  CC      arch/powerpc/platforms/powermac/setup.o
  CC      arch/powerpc/sysdev/mpic_u3msi.o
  CPP     arch/powerpc/kernel/systbl_chk.i
  CC      arch/powerpc/kernel/idle.o
  CC      arch/powerpc/lib/xor_vmx.o
  CC      arch/powerpc/kernel/signal.o
  CC      arch/powerpc/platforms/maple/pci.o
  CC      arch/powerpc/lib/xor_vmx_glue.o
  CC      arch/powerpc/platforms/pasemi/pci.o
  LD [M]  arch/powerpc/crypto/md5-ppc.o
  CC      arch/powerpc/mm/mmu_context.o
  LD [M]  arch/powerpc/crypto/sha1-powerpc.o
  LD [M]  arch/powerpc/crypto/crc32c-vpmsum.o
  CC      arch/powerpc/platforms/pasemi/time.o
  CC      arch/powerpc/platforms/cell/spider-pci.o
  AS      arch/powerpc/lib/copypage_64.o
  CC      arch/powerpc/sysdev/msi_bitmap.o
  AS      arch/powerpc/lib/copyuser_64.o
  CC      arch/powerpc/mm/pgtable-hash64.o
  CC      arch/powerpc/kernel/sysfs.o
  CC      arch/powerpc/platforms/pasemi/idle.o
  CC      arch/powerpc/platforms/cell/ras.o
  AS      arch/powerpc/platforms/pasemi/powersave.o
  AS      arch/powerpc/lib/mem_64.o
  CC      arch/powerpc/sysdev/dart_iommu.o
  CC      arch/powerpc/platforms/maple/time.o
  CC      arch/powerpc/platforms/powermac/time.o
  AS      arch/powerpc/lib/hweight_64.o
  CC      arch/powerpc/platforms/powermac/feature.o
  CC      arch/powerpc/platforms/pasemi/iommu.o
  AS      arch/powerpc/lib/copyuser_power7.o
  CC      arch/powerpc/platforms/pasemi/dma_lib.o
  AS      arch/powerpc/lib/string_64.o
  AR      arch/powerpc/platforms/maple/built-in.o
  AS      arch/powerpc/lib/copypage_power7.o
  CC      arch/powerpc/platforms/cell/smp.o
  AS      arch/powerpc/lib/memcpy_power7.o
  CC      arch/powerpc/platforms/cell/spu_callbacks.o
  CC      arch/powerpc/platforms/cell/spu_base.o
  AS      arch/powerpc/lib/memcpy_64.o
  CC      arch/powerpc/mm/hash_utils_64.o
  CC      arch/powerpc/sysdev/mmio_nvram.o
  AS      arch/powerpc/lib/memcmp_64.o
  CC      arch/powerpc/platforms/cell/spu_notify.o
  CC      arch/powerpc/lib/locks.o
  CC      arch/powerpc/lib/vmx-helper.o
  CC      arch/powerpc/sysdev/i8259.o
  CC      arch/powerpc/sysdev/dcr.o
  CC      arch/powerpc/sysdev/scom.o
  CC      arch/powerpc/platforms/powermac/pci.o
  CC      arch/powerpc/platforms/pasemi/misc.o
  CC      arch/powerpc/sysdev/xics/xics-common.o
  CC      arch/powerpc/kernel/cacheinfo.o
  AS      arch/powerpc/lib/crtsavres.o
  AR      arch/powerpc/lib/built-in.o
  CC      arch/powerpc/platforms/cell/spu_syscalls.o
  CC      arch/powerpc/sysdev/xive/common.o
  CC      arch/powerpc/kernel/time.o
  AS      arch/powerpc/mm/slb_low.o
  CC      arch/powerpc/platforms/cell/spu_priv1_mmio.o
  CC      arch/powerpc/platforms/pasemi/gpio_mdio.o
  CC      arch/powerpc/platforms/powernv/setup.o
  CC      arch/powerpc/mm/slb.o
  CC      arch/powerpc/mm/hash_native_64.o
  AS      arch/powerpc/platforms/powermac/sleep.o
  CC      arch/powerpc/sysdev/xics/icp-native.o
  CC      arch/powerpc/platforms/powermac/low_i2c.o
  AS      arch/powerpc/platforms/powermac/cache.o
  CC      arch/powerpc/platforms/cell/spu_manage.o
  CC      arch/powerpc/mm/mmu_context_book3s64.o
  CC      arch/powerpc/platforms/pasemi/msi.o
  AR      arch/powerpc/platforms/cell/spufs/built-in.o
  CC [M]  arch/powerpc/platforms/cell/spufs/inode.o
  AS      arch/powerpc/platforms/powernv/opal-wrappers.o
  CC      arch/powerpc/sysdev/xive/native.o
  CC      arch/powerpc/platforms/powernv/opal.o
  CC      arch/powerpc/sysdev/xics/icp-hv.o
  CC      arch/powerpc/kernel/prom.o
  CC      arch/powerpc/sysdev/xics/ics-rtas.o
  AR      arch/powerpc/platforms/pasemi/built-in.o
  CC      arch/powerpc/sysdev/xics/ics-opal.o
  CC      arch/powerpc/mm/pgtable-book3s64.o
  CC      arch/powerpc/platforms/powernv/opal-async.o
  CC      arch/powerpc/platforms/powernv/idle.o
  CC      arch/powerpc/platforms/powermac/pfunc_core.o
  CC      arch/powerpc/platforms/powernv/opal-rtc.o
  CC      arch/powerpc/sysdev/xics/icp-opal.o
  CC      arch/powerpc/mm/pgtable-radix.o
  CC      arch/powerpc/sysdev/xive/spapr.o
  CC [M]  arch/powerpc/platforms/cell/spufs/file.o
  CC      arch/powerpc/platforms/powermac/pfunc_base.o
  CC [M]  arch/powerpc/sysdev/pmi.o
  CC      arch/powerpc/kernel/traps.o
  CC [M]  arch/powerpc/sysdev/axonram.o
  AR      arch/powerpc/sysdev/xics/built-in.o
  AS      arch/powerpc/net/bpf_jit_asm64.o
  CC      arch/powerpc/net/bpf_jit_comp64.o
  CC      arch/powerpc/platforms/powernv/opal-nvram.o
  AR      arch/powerpc/sysdev/xive/built-in.o
  CC      arch/powerpc/platforms/powernv/opal-lpc.o
  CC      arch/powerpc/mm/tlb-radix.o
  CC      arch/powerpc/platforms/ps3/setup.o
  CC      arch/powerpc/platforms/powermac/udbg_scc.o
  CC      arch/powerpc/platforms/pseries/lpar.o
  CC [M]  arch/powerpc/platforms/cell/spufs/context.o
  AR      arch/powerpc/sysdev/built-in.o
  AS      arch/powerpc/platforms/pseries/hvCall.o
  CC      arch/powerpc/platforms/powermac/udbg_adb.o
  CC      arch/powerpc/mm/tlb_hash64.o
  CC      arch/powerpc/platforms/powernv/opal-flash.o
  CC      arch/powerpc/platforms/ps3/mm.o
  CC      arch/powerpc/platforms/powernv/rng.o
  CC [M]  arch/powerpc/platforms/cell/spufs/syscalls.o
  CC      arch/powerpc/kernel/setup-common.o
  CC      arch/powerpc/platforms/powermac/nvram.o
  CC      arch/powerpc/platforms/powermac/smp.o
  CC      arch/powerpc/mm/hash64_64k.o
  CC      arch/powerpc/kernel/udbg.o
  CC [M]  arch/powerpc/platforms/cell/spufs/sched.o
  CC      arch/powerpc/platforms/pseries/nvram.o
  CC [M]  arch/powerpc/platforms/cell/spufs/backing_ops.o
  AR      arch/powerpc/net/built-in.o
  CC [M]  arch/powerpc/platforms/cell/spufs/hw_ops.o
  CC      arch/powerpc/platforms/powernv/opal-elog.o
  CC      arch/powerpc/mm/numa.o
  CC [M]  arch/powerpc/platforms/cell/spufs/run.o
  AR      arch/powerpc/platforms/powermac/built-in.o
  CC      arch/powerpc/platforms/pseries/reconfig.o
  CC      arch/powerpc/platforms/ps3/time.o
  CC      arch/powerpc/xmon/xmon.o
  CC      arch/powerpc/xmon/nonstdio.o
  CC      arch/powerpc/platforms/powernv/opal-dump.o
  AS      arch/powerpc/kernel/misc.o
  CC      arch/powerpc/kernel/io.o
  CC      arch/powerpc/mm/vphn.o
  CC      arch/powerpc/mm/slice.o
  AS      arch/powerpc/xmon/spr_access.o
  AS      arch/powerpc/platforms/ps3/hvcall.o
  CC      arch/powerpc/platforms/ps3/htab.o
  CC      arch/powerpc/kvm/book3s_exports.o
  CC      arch/powerpc/kvm/book3s_64_vio_hv.o
  CC      arch/powerpc/platforms/pseries/of_helpers.o
  CC [M]  arch/powerpc/platforms/cell/spufs/gang.o
  CC      arch/powerpc/kernel/dma.o
  CC      arch/powerpc/platforms/powernv/opal-sysparam.o
  CC      arch/powerpc/platforms/pseries/setup.o
  SHIPPED arch/powerpc/platforms/cell/spufs/spu_save_dump.h
  SHIPPED arch/powerpc/platforms/cell/spufs/spu_restore_dump.h
  CC [M]  arch/powerpc/platforms/cell/spufs/fault.o
  CC [M]  arch/powerpc/platforms/cell/spufs/lscsa_alloc.o
  CC      arch/powerpc/platforms/ps3/repository.o
  CC      arch/powerpc/platforms/ps3/interrupt.o
  CC      arch/powerpc/platforms/powernv/opal-sensor.o
  CC      arch/powerpc/mm/hugetlbpage.o
  CC      arch/powerpc/mm/hugetlbpage-hash64.o
  CC [M]  arch/powerpc/platforms/cell/spufs/coredump.o
  CC      arch/powerpc/kvm/book3s_hv_hmi.o
  AS      arch/powerpc/kernel/misc_64.o
  AS      arch/powerpc/kvm/book3s_hv_rmhandlers.o
  CC      arch/powerpc/platforms/pseries/iommu.o
  CC      arch/powerpc/kvm/book3s_hv_rm_mmu.o
  CC      arch/powerpc/kernel/of_platform.o
  CC      arch/powerpc/platforms/powernv/opal-msglog.o
  CC      arch/powerpc/kvm/book3s_hv_ras.o
  CC      arch/powerpc/platforms/ps3/exports.o
  CC      arch/powerpc/platforms/ps3/os-area.o
  CC      arch/powerpc/platforms/cell/axon_msi.o
  CC [M]  arch/powerpc/platforms/cell/spufs/switch.o
  CC      arch/powerpc/platforms/powernv/opal-hmi.o
  CC      arch/powerpc/kernel/prom_parse.o
  CC      arch/powerpc/platforms/powernv/opal-power.o
  CC      arch/powerpc/xmon/ppc-dis.o
  CC      arch/powerpc/mm/hugetlbpage-radix.o
  CC      arch/powerpc/xmon/ppc-opc.o
  CC      arch/powerpc/xmon/spu-dis.o
  CC [M]  arch/powerpc/platforms/cell/cbe_thermal.o
  CC      arch/powerpc/platforms/pseries/event_sources.o
  CC [M]  arch/powerpc/platforms/cell/cpufreq_spudemand.o
  CC      arch/powerpc/platforms/ps3/system-bus.o
  CC      arch/powerpc/kernel/setup_64.o
  CC      arch/powerpc/platforms/powernv/opal-irqchip.o
  CC      arch/powerpc/mm/hugepage-hash64.o
  CC      arch/powerpc/platforms/ps3/smp.o
  CC      arch/powerpc/platforms/pseries/ras.o
  CC      arch/powerpc/kvm/book3s_hv_builtin.o
  CC      arch/powerpc/kvm/book3s_hv_rm_xics.o
  LD [M]  arch/powerpc/platforms/cell/spufs/spufs.o
  CC [M]  arch/powerpc/platforms/cell/cbe_powerbutton.o
  CC      arch/powerpc/mm/copro_fault.o
  CC      arch/powerpc/mm/mmu_context_iommu.o
  CC      arch/powerpc/platforms/pseries/firmware.o
  CC      arch/powerpc/platforms/ps3/spu.o
  CC      arch/powerpc/kernel/sys_ppc32.o
  CC      arch/powerpc/platforms/powernv/opal-kmsg.o
  AR      arch/powerpc/platforms/cell/built-in.o
  CC      arch/powerpc/kernel/signal_64.o
  CC      arch/powerpc/xmon/spu-opc.o
  CC      arch/powerpc/platforms/powernv/opal-powercap.o
  AR      arch/powerpc/xmon/built-in.o
  CC      arch/powerpc/platforms/powernv/opal-psr.o
  CC      arch/powerpc/platforms/pseries/power.o
  CC      arch/powerpc/platforms/ps3/device-init.o
  CC      arch/powerpc/kernel/ptrace32.o
  CC      arch/powerpc/kvm/book3s_hv_rm_xive.o
  CC [M]  arch/powerpc/kvm/../../../virt/kvm/kvm_main.o
  CC [M]  arch/powerpc/kvm/../../../virt/kvm/eventfd.o
  CC      arch/powerpc/platforms/powernv/opal-sensor-groups.o
  AR      arch/powerpc/mm/built-in.o
  CC      arch/powerpc/platforms/powernv/smp.o
  CC      arch/powerpc/platforms/pseries/dlpar.o
  CC      arch/powerpc/platforms/pseries/mobility.o
  CC      arch/powerpc/platforms/pseries/rng.o
  CC      arch/powerpc/kernel/paca.o
  AR      arch/powerpc/platforms/ps3/built-in.o
  CC      arch/powerpc/kernel/nvram_64.o
  CC      arch/powerpc/perf/callchain.o
  CC      arch/powerpc/platforms/powernv/subcore.o
  CC [M]  arch/powerpc/kvm/../../../virt/kvm/vfio.o
  CC [M]  arch/powerpc/kvm/powerpc.o
  CC      arch/powerpc/platforms/pseries/pci.o
  AS      arch/powerpc/purgatory/trampoline.o
  LD      arch/powerpc/purgatory/purgatory.ro
  BIN2C   arch/powerpc/purgatory/kexec-purgatory.c
  CC      arch/powerpc/purgatory/kexec-purgatory.o
  AR      arch/powerpc/purgatory/built-in.o
  CC      arch/powerpc/platforms/pseries/pci_dlpar.o
  CC [M]  arch/powerpc/kvm/emulate_loadstore.o
  CC      arch/powerpc/perf/perf_regs.o
  CC      arch/powerpc/perf/core-book3s.o
  CC      arch/powerpc/kernel/firmware.o
  AS      arch/powerpc/platforms/powernv/subcore-asm.o
  CC      arch/powerpc/platforms/pseries/eeh_pseries.o
  CC      arch/powerpc/platforms/powernv/pci.o
  CC      arch/powerpc/kernel/trace/ftrace.o
  CC      kernel/fork.o
  CC      arch/powerpc/platforms/powernv/pci-ioda.o
  CC      arch/powerpc/platforms/powernv/npu-dma.o
  CC      arch/powerpc/platforms/powernv/pci-cxl.o
  CC      arch/powerpc/kernel/trace/trace_clock.o
  CC      arch/powerpc/platforms/pseries/msi.o
  AS      arch/powerpc/kernel/trace/ftrace_64.o
  AS      arch/powerpc/kernel/trace/ftrace_64_pg.o
  AR      arch/powerpc/kernel/trace/built-in.o
  LDS     arch/powerpc/kernel/vdso32/vdso32.lds
  VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o
  VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o
  VDSO32A arch/powerpc/kernel/vdso32/datapage.o
  VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o
  VDSO32A arch/powerpc/kernel/vdso32/note.o
  AS      arch/powerpc/perf/bhrb.o
  CC      arch/powerpc/perf/imc-pmu.o
  CC      arch/powerpc/perf/hv-24x7.o
  VDSO32A arch/powerpc/kernel/vdso32/getcpu.o
  VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg
  OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so
  AS      arch/powerpc/kernel/vdso32/vdso32_wrapper.o
  LDS     arch/powerpc/kernel/vdso64/vdso64.lds
  AS      arch/powerpc/kernel/vdso64/sigtramp.o
  AR      arch/powerpc/kernel/vdso32/built-in.o
  CC      arch/powerpc/perf/hv-gpci.o
  AS      arch/powerpc/kernel/vdso64/gettimeofday.o
  AS      arch/powerpc/kernel/vdso64/datapage.o
  AS      arch/powerpc/kernel/vdso64/cacheflush.o
  AS      arch/powerpc/kernel/vdso64/note.o
  CC      arch/powerpc/platforms/pseries/smp.o
  AS      arch/powerpc/kernel/vdso64/getcpu.o
  AR      certs/built-in.o
  CC      arch/powerpc/platforms/pseries/kexec.o
  VDSO64L arch/powerpc/kernel/vdso64/vdso64.so.dbg
  OBJCOPY arch/powerpc/kernel/vdso64/vdso64.so
  AS      arch/powerpc/kernel/vdso64/vdso64_wrapper.o
  AR      arch/powerpc/kernel/vdso64/built-in.o
  CC      arch/powerpc/kernel/watchdog.o
  CC      arch/powerpc/kernel/hw_breakpoint.o
  CC [M]  arch/powerpc/kvm/book3s.o
/home/kisskb/slave/src/arch/powerpc/kernel/watchdog.c: In function 'start_watchdog_timer_on':
/home/kisskb/slave/src/arch/powerpc/kernel/watchdog.c:294:2: error: implicit declaration of function 'timer_setup' [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors
/home/kisskb/slave/src/scripts/Makefile.build:311: recipe for target 'arch/powerpc/kernel/watchdog.o' failed
make[2]: *** [arch/powerpc/kernel/watchdog.o] Error 1
make[2]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/platforms/powernv/eeh-powernv.o
  CC      kernel/exec_domain.o
  CC      kernel/panic.o
  CC      arch/powerpc/platforms/pseries/pseries_energy.o
/home/kisskb/slave/src/Makefile:1019: recipe for target 'arch/powerpc/kernel' failed
make[1]: *** [arch/powerpc/kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/platforms/powernv/opal-xscom.o
  CC [M]  arch/powerpc/kvm/book3s_rtas.o
  CC [M]  arch/powerpc/kvm/book3s_xics.o
  CC      arch/powerpc/perf/hv-common.o
  CC      arch/powerpc/platforms/pseries/hotplug-cpu.o
  CC      arch/powerpc/perf/power4-pmu.o
  CC      arch/powerpc/perf/ppc970-pmu.o
  CC [M]  arch/powerpc/kvm/book3s_xive.o
  CC      kernel/cpu.o
  CC      kernel/exit.o
  CC      kernel/softirq.o
  CC      kernel/resource.o
  CC [M]  arch/powerpc/kvm/book3s_64_vio.o
  CC      arch/powerpc/platforms/powernv/opal-tracepoints.o
  CC      arch/powerpc/perf/power5-pmu.o
  CC      arch/powerpc/platforms/pseries/hvconsole.o
  CC      arch/powerpc/platforms/powernv/opal-imc.o
  CC      arch/powerpc/platforms/pseries/cmm.o
  CC      arch/powerpc/perf/power5+-pmu.o
  CC      arch/powerpc/platforms/pseries/dtl.o
  CC      kernel/sysctl.o
  CC      arch/powerpc/platforms/powernv/vas.o
  CC      arch/powerpc/perf/power6-pmu.o
  CC [M]  arch/powerpc/kvm/book3s_hv.o
  CC      kernel/sysctl_binary.o
  CC      arch/powerpc/platforms/powernv/vas-window.o
  CC      arch/powerpc/perf/power7-pmu.o
  CC      arch/powerpc/platforms/pseries/io_event_irq.o
  CC      arch/powerpc/perf/isa207-common.o
  CC      arch/powerpc/perf/power8-pmu.o
  CC      arch/powerpc/perf/power9-pmu.o
  AS [M]  arch/powerpc/kvm/book3s_hv_interrupts.o
  CC      kernel/capability.o
  CC [M]  arch/powerpc/kvm/book3s_64_mmu_hv.o
  CC      kernel/ptrace.o
  AR      arch/powerpc/platforms/powernv/built-in.o
  CC      kernel/user.o
  CC      kernel/signal.o
  CC      arch/powerpc/platforms/pseries/lparcfg.o
  CC      kernel/sys.o
  AR      arch/powerpc/perf/built-in.o
  CC      kernel/umh.o
  CC      arch/powerpc/platforms/pseries/vio.o
  CC      arch/powerpc/platforms/pseries/ibmebus.o
  CC [M]  arch/powerpc/kvm/book3s_64_mmu_radix.o
  CC      kernel/workqueue.o
  CC      kernel/pid.o
  CC      kernel/task_work.o
  CC      kernel/extable.o
  CC      arch/powerpc/platforms/pseries/suspend.o
  CC [M]  arch/powerpc/platforms/pseries/scanlog.o
  CC [M]  arch/powerpc/platforms/pseries/hvcserver.o
  CC      kernel/params.o
  AR      arch/powerpc/kvm/built-in.o
  CC      kernel/kthread.o
  LD [M]  arch/powerpc/kvm/kvm.o
  AR      arch/powerpc/platforms/pseries/built-in.o
  CC      kernel/sys_ni.o
  CC      kernel/nsproxy.o
  CC      kernel/notifier.o
  CC      kernel/ksysfs.o
  AR      arch/powerpc/platforms/built-in.o
  CC      kernel/cred.o
  CC      kernel/reboot.o
  LD [M]  arch/powerpc/kvm/kvm-hv.o
  CC      kernel/async.o
  CC      kernel/range.o
  CC      kernel/smpboot.o
  CC      kernel/ucount.o
  CC      kernel/kmod.o
  CC      kernel/groups.o
  CC      kernel/cgroup/cgroup.o
  CC      kernel/bpf/core.o
  CC      kernel/bpf/syscall.o
  CC      kernel/bpf/verifier.o
  CC      kernel/bpf/inode.o
  CC      kernel/bpf/helpers.o
  CC      kernel/bpf/tnum.o
  CC      kernel/bpf/hashtab.o
  CC      kernel/bpf/arraymap.o
  CC      kernel/events/core.o
  CC      kernel/irq/irqdesc.o
  CC      kernel/irq/handle.o
  CC      kernel/irq/manage.o
  CC      kernel/cgroup/namespace.o
  CC      kernel/cgroup/cgroup-v1.o
  CC      kernel/events/ring_buffer.o
  CC      kernel/events/callchain.o
  CC      kernel/events/hw_breakpoint.o
  CC      kernel/bpf/percpu_freelist.o
  CC      kernel/cgroup/cpuset.o
  CC      kernel/irq/spurious.o
  AR      kernel/livepatch/built-in.o
  CC      kernel/bpf/bpf_lru_list.o
  CC      kernel/bpf/lpm_trie.o
/home/kisskb/slave/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/home/kisskb/slave/src/kernel/cgroup/cgroup-v1.c:1264:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
  CC      kernel/locking/mutex.o
  CC      kernel/irq/resend.o
  CC      kernel/power/qos.o
  CC      kernel/irq/chip.o
  CC      kernel/locking/semaphore.o
  CC      kernel/irq/dummychip.o
  CC      kernel/bpf/map_in_map.o
  CC      kernel/bpf/devmap.o
  CC      kernel/events/uprobes.o
  CC      kernel/irq/devres.o
  CC      kernel/bpf/stackmap.o
  CC      kernel/irq/irqdomain.o
  CC      kernel/locking/rwsem.o
  CC      kernel/power/main.o
  CC      kernel/irq/proc.o
  CC      kernel/printk/printk.o
  CC      kernel/irq/cpuhotplug.o
  AR      kernel/cgroup/built-in.o
  CC      kernel/irq/pm.o
  CC      kernel/locking/percpu-rwsem.o
  CC      kernel/bpf/cgroup.o
  CC      kernel/printk/printk_safe.o
  CC      kernel/rcu/update.o
  CC      kernel/locking/mutex-debug.o
  CC      kernel/power/console.o
  CC      kernel/irq/msi.o
  CC      kernel/power/process.o
  CC      kernel/power/suspend.o
  CC      kernel/sched/core.o
  CC      kernel/locking/spinlock.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/irq/affinity.o
  AR      kernel/bpf/built-in.o
  CC      kernel/time/time.o
  CC      kernel/sched/loadavg.o
  AR      kernel/events/built-in.o
  CC      kernel/sched/clock.o
  CC      kernel/sched/cputime.o
  AR      kernel/irq/built-in.o
  CC      kernel/locking/osq_lock.o
  CC      kernel/sched/idle_task.o
  CC      kernel/trace/trace_clock.o
  AR      kernel/printk/built-in.o
  CC      kernel/freezer.o
  CC      kernel/rcu/sync.o
  CC      kernel/locking/rtmutex.o
  CC      kernel/power/poweroff.o
  CC      kernel/time/timer.o
  CC      kernel/time/hrtimer.o
  CC      kernel/time/timekeeping.o
  CC      kernel/rcu/srcutree.o
  AR      kernel/power/built-in.o
  CC      kernel/sched/fair.o
  CC      kernel/locking/rwsem-xadd.o
  CC      kernel/trace/ftrace.o
  CC      kernel/rcu/tree.o
  CC      kernel/sched/rt.o
  AR      kernel/locking/built-in.o
  CC      kernel/time/ntp.o
  CC      kernel/time/clocksource.o
  CC      kernel/rcu/rcu_segcblist.o
  CC      kernel/time/jiffies.o
  CC      kernel/time/timer_list.o
  CC      kernel/trace/ring_buffer.o
  CC      kernel/time/timeconv.o
  CC      kernel/trace/trace.o
  CC      kernel/time/timecounter.o
  CC      kernel/time/alarmtimer.o
  CC      kernel/time/posix-timers.o
  CC      kernel/time/posix-cpu-timers.o
  CC      kernel/trace/trace_output.o
  CC      kernel/trace/trace_seq.o
  CC      kernel/trace/trace_stat.o
  CC      kernel/sched/deadline.o
  CC      kernel/trace/trace_printk.o
  CC      kernel/time/posix-clock.o
  CC      kernel/sched/wait.o
  CC      kernel/sched/wait_bit.o
  CC      kernel/profile.o
  CC      kernel/time/itimer.o
  CC      kernel/time/clockevents.o
  CC      kernel/trace/trace_sched_switch.o
  CC      kernel/trace/trace_functions.o
  AR      kernel/rcu/built-in.o
  CC      kernel/trace/trace_sched_wakeup.o
  CC      kernel/time/tick-common.o
  CC      kernel/time/tick-broadcast.o
  CC      kernel/trace/trace_nop.o
  CC      kernel/stacktrace.o
  CC      kernel/trace/trace_functions_graph.o
  CC      kernel/time/tick-broadcast-hrtimer.o
  CC      kernel/sched/swait.o
  CC      kernel/futex.o
  CC      kernel/sched/completion.o
  CC      kernel/futex_compat.o
  CC      kernel/trace/blktrace.o
  CC      kernel/time/tick-oneshot.o
  CC      kernel/trace/trace_events.o
  CC      kernel/sched/idle.o
  CC      kernel/time/tick-sched.o
  CC      kernel/time/timekeeping_debug.o
  CC      kernel/trace/trace_export.o
  CC      kernel/dma.o
  CC      kernel/sched/cpupri.o
  CC      kernel/sched/cpudeadline.o
  CC      kernel/sched/topology.o
  CC      kernel/trace/trace_event_perf.o
  CC      kernel/sched/stop_task.o
  CC      kernel/trace/trace_events_filter.o
  CC      kernel/smp.o
  AR      kernel/time/built-in.o
  CC      kernel/sched/stats.o
  CC      kernel/sched/debug.o
  CC      kernel/module.o
  CC      kernel/trace/trace_events_trigger.o
  CC      kernel/trace/bpf_trace.o
  CC      kernel/trace/trace_kprobe.o
  CC      kernel/sched/cpufreq.o
  CC      kernel/sched/membarrier.o
  CC      kernel/kallsyms.o
  CC      kernel/crash_core.o
  CC      kernel/kexec_core.o
  CC      kernel/trace/power-traces.o
  AR      kernel/sched/built-in.o
  CC      kernel/kexec.o
  CC      kernel/trace/rpm-traces.o
  CC      kernel/kexec_file.o
  CC      kernel/compat.o
  CC      kernel/trace/trace_probe.o
  CC      kernel/trace/trace_uprobe.o
  CC      kernel/utsname.o
  CC      kernel/pid_namespace.o
  GZIP    kernel/config_data.gz
  AR      kernel/trace/libftrace.o
  CC      kernel/stop_machine.o
  CC      kernel/kprobes.o
  CC      kernel/hung_task.o
  CC      kernel/watchdog.o
  CC      kernel/seccomp.o
  CC      kernel/relay.o
  CC      kernel/utsname_sysctl.o
  AR      kernel/trace/built-in.o
  CC      kernel/delayacct.o
  CC      kernel/taskstats.o
  CC      kernel/tsacct.o
  CC      kernel/tracepoint.o
  CC      kernel/latencytop.o
  CC      kernel/elfcore.o
  CC      kernel/irq_work.o
  CC      kernel/crash_dump.o
  CC      kernel/jump_label.o
  CC      kernel/memremap.o
  CHK     kernel/config_data.h
  UPD     kernel/config_data.h
  CC      kernel/configs.o
  AR      kernel/built-in.o
make[1]: Leaving directory '/home/kisskb/slave/build/powerpc-next_ppc64_defconfig_powerpc'
Makefile:145: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -j 10 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64_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/powerpc-next_ppc64_defconfig_powerpc
# Build took: 0:00:39.133925