# git rev-parse -q --verify 53c656c4138511c2ba54df413dc29976cfa9f084^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/mpe/kisskb master
# git rev-parse -q --verify 53c656c4138511c2ba54df413dc29976cfa9f084^{commit}
53c656c4138511c2ba54df413dc29976cfa9f084
# git checkout -q -f -B kisskb 53c656c4138511c2ba54df413dc29976cfa9f084
# git clean -qxdf
# git log -1
commit 53c656c4138511c2ba54df413dc29976cfa9f084
Author: Paul Mackerras <paulus@samba.org>
Date:   Wed Oct 21 16:06:24 2015 +1100

    powerpc/powernv: Handle irq_happened flag correctly in off-line loop
    
    This fixes a bug where it is possible for an off-line CPU to fail to go
    into a low-power state (nap/sleep/winkle), and to become unresponsive to
    requests from the KVM subsystem to wake up and run a VCPU. What can
    happen is that a maskable interrupt of some kind (external, decrementer,
    hypervisor doorbell, or HMI) after we have called local_irq_disable() at
    the beginning of pnv_smp_cpu_kill_self() and before interrupts are
    hard-disabled inside power7_nap/sleep/winkle(). In this situation, the
    pending event is marked in the irq_happened flag in the PACA. This
    pending event prevents power7_nap/sleep/winkle from going to the
    requested low-power state; instead they return immediately. We don't
    deal with any of these pending event flags in the off-line loop in
    pnv_smp_cpu_kill_self() because power7_nap et al. return 0 in this case,
    so we will have srr1 == 0, and none of the processing to clear
    interrupts or doorbells will be done.
    
    Usually, the most obvious symptom of this is that a KVM guest will fail
    with a console message saying "KVM: couldn't grab cpu N".
    
    This fixes the problem by making sure we handle the irq_happened flags
    properly. First, we hard-disable before the off-line loop. Once we have
    hard-disabled, the irq_happened flags can't change underneath us. We
    unconditionally clear the DEC and HMI flags: there is no processing of
    timer interrupts while off-line, and the necessary HMI processing is all
    done in lower-level code. We leave the EE and DBELL flags alone for the
    first iteration of the loop, so that we won't fail to respond to a
    split-core request that came in just before hard-disabling. Within the
    loop, we handle external interrupts if the EE bit is set in irq_happened
    as well as if the low-power state was interrupted by an external
    interrupt. (We don't need to do the msgclr for a pending doorbell in
    irq_happened, because doorbells are edge-triggered and don't remain
    pending in hardware.) Then we clear both the EE and DBELL flags, and
    once clear, they cannot be set again (until this CPU comes online again,
    that is).
    
    This also fixes the debug check to not be done when we just ran a KVM
    guest or when the sleep didn't happen because of a pending event in
    irq_happened.
    
    Signed-off-by: Paul Mackerras <paulus@samba.org>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 53c656c4138511c2ba54df413dc29976cfa9f084
# < make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/mpe_44x_ebony_defconfig_powerpc CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  44x/ebony_defconfig
# make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/mpe_44x_ebony_defconfig_powerpc CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
make[1]: Entering directory '/home/kisskb/slave/build/mpe_44x_ebony_defconfig_powerpc'
  GEN     ./Makefile
scripts/kconfig/conf  --silentoldconfig Kconfig
  CHK     include/config/kernel.release
  GEN     ./Makefile
  WRAP    arch/powerpc/include/generated/asm/clkdev.h
  WRAP    arch/powerpc/include/generated/asm/div64.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
  CHK     include/generated/uapi/linux/version.h
  UPD     include/generated/uapi/linux/version.h
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  CC      scripts/mod/empty.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/mod/mk_elfconfig
  HOSTCC  scripts/dtc/livetree.o
  CC      scripts/mod/devicetable-offsets.s
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  SHIPPED scripts/dtc/dtc-lexer.lex.c
  SHIPPED scripts/dtc/dtc-parser.tab.h
  HOSTCC  scripts/dtc/util.o
  SHIPPED scripts/dtc/dtc-parser.tab.c
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  GEN     scripts/mod/devicetable-offsets.h
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTLD  scripts/dtc/dtc
  UPD     include/config/kernel.release
  Using /home/kisskb/slave/src as source for kernel
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h
  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
  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/do_mounts_rd.o
  CC      init/do_mounts_initrd.o
  CC      init/initramfs.o
  CC      init/init_task.o
  UPD     include/generated/compile.h
  CC      arch/powerpc/mm/fault.o
  CC      arch/powerpc/mm/mem.o
  CC      arch/powerpc/mm/pgtable.o
  CC      init/version.o
  AS      arch/powerpc/lib/string.o
  CC      arch/powerpc/lib/alloc.o
  CC      arch/powerpc/mm/init_32.o
  CC      arch/powerpc/lib/ppc_ksyms.o
  CC      arch/powerpc/mm/pgtable_32.o
  CC      arch/powerpc/mm/mmap.o
  CC      arch/powerpc/mm/tlb_nohash.o
  AS      arch/powerpc/mm/tlb_nohash_low.o
  CC      arch/powerpc/mm/44x_mmu.o
  CC      arch/powerpc/sysdev/indirect_pci.o
  AS      arch/powerpc/lib/checksum_32.o
  CC      arch/powerpc/mm/hugetlbpage.o
  AS      arch/powerpc/lib/crtsavres.o
  CC      arch/powerpc/mm/mmu_context_nohash.o
  CC      arch/powerpc/lib/code-patching.o
  CC      arch/powerpc/lib/feature-fixups.o
  AS      arch/powerpc/lib/copy_32.o
  AS      arch/powerpc/lib/div64.o
  CC      arch/powerpc/sysdev/uic.o
  CC      arch/powerpc/mm/dma-noncoherent.o
  CC      arch/powerpc/sysdev/ppc4xx_pci.o
  AS      arch/powerpc/sysdev/dcr-low.o
  CC      arch/powerpc/sysdev/of_rtc.o
  CC      arch/powerpc/sysdev/ppc4xx_soc.o
  CC      arch/powerpc/sysdev/ppc4xx_cpm.o
  CC      arch/powerpc/sysdev/dcr.o
  AS      arch/powerpc/platforms/44x/misc_44x.o
  CC      arch/powerpc/platforms/44x/ebony.o
  CC      arch/powerpc/kernel/cputable.o
  LD      arch/powerpc/crypto/built-in.o
  CC      arch/powerpc/kernel/ptrace.o
  CC      arch/powerpc/kernel/syscalls.o
  CC      arch/powerpc/kernel/align.o
  CC      arch/powerpc/kernel/irq.o
  CC      arch/powerpc/kernel/process.o
  CC      arch/powerpc/kernel/pmc.o
  CC      arch/powerpc/kernel/vdso.o
  CPP     arch/powerpc/kernel/systbl_chk.i
  CC      arch/powerpc/kernel/idle.o
  CC      arch/powerpc/kernel/signal_32.o
  CC      arch/powerpc/kernel/signal.o
  CC      arch/powerpc/kernel/sysfs.o
  CC      arch/powerpc/kernel/time.o
  CC      arch/powerpc/kernel/cacheinfo.o
  CC      arch/powerpc/kernel/prom.o
  LD      arch/powerpc/net/built-in.o
  CC      arch/powerpc/kernel/traps.o
  CC      arch/powerpc/kernel/setup-common.o
  AS      arch/powerpc/kernel/misc.o
  CC      arch/powerpc/kernel/io.o
  CC      arch/powerpc/kernel/udbg.o
  AS      arch/powerpc/kernel/misc_32.o
  CC      arch/powerpc/kernel/dma.o
  LD      arch/powerpc/lib/built-in.o
  CC      arch/powerpc/kernel/prom_parse.o
  CC      arch/powerpc/kernel/of_platform.o
  CC      arch/powerpc/kernel/proc_powerpc.o
  CC      arch/powerpc/kernel/module.o
  CC      arch/powerpc/kernel/module_32.o
  AS      arch/powerpc/kernel/cpu_setup_44x.o
  CC      arch/powerpc/kernel/setup_32.o
  LD      arch/powerpc/platforms/44x/built-in.o
  AS      arch/powerpc/kernel/entry_32.o
  CC      arch/powerpc/kernel/ppc_ksyms.o
  CC      arch/powerpc/kernel/ppc_ksyms_32.o
  LD      certs/built-in.o
  GEN     usr/initramfs_data.cpio.gz
  CC      arch/powerpc/kernel/udbg_16550.o
  CC      arch/powerpc/kernel/pci_32.o
  CC      arch/powerpc/kernel/legacy_serial.o
  LD      arch/powerpc/platforms/built-in.o
  CC      arch/powerpc/kernel/pci-common.o
  CC      arch/powerpc/kernel/iomap.o
  LDS     arch/powerpc/kernel/vdso32/vdso32.lds
  CC      arch/powerpc/kernel/pci_of_scan.o
  AS      arch/powerpc/kernel/head_44x.o
  LDS     arch/powerpc/kernel/vmlinux.lds
  VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o
  VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o
  LD      arch/powerpc/mm/built-in.o
  CALL    /home/kisskb/slave/src/arch/powerpc/kernel/systbl_chk.sh
  VDSO32A arch/powerpc/kernel/vdso32/datapage.o
  VDSO32A arch/powerpc/kernel/vdso32/note.o
  VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o
  AS      arch/powerpc/kernel/systbl.o
  VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg
  CC      arch/powerpc/math-emu/frsqrtes.o
  CC      arch/powerpc/math-emu/fsqrt.o
  CC      arch/powerpc/math-emu/math.o
  AS      usr/initramfs_data.o
  CC      arch/powerpc/math-emu/fre.o
  OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so
  CC      arch/powerpc/math-emu/mtfsf.o
  CC      arch/powerpc/math-emu/fsqrts.o
  CC      arch/powerpc/math-emu/fabs.o
  CC      arch/powerpc/math-emu/mtfsfi.o
  AS      arch/powerpc/kernel/vdso32/vdso32_wrapper.o
  CC      arch/powerpc/math-emu/fadd.o
  CC      arch/powerpc/math-emu/fcmpo.o
  CC      arch/powerpc/math-emu/fctiw.o
  CC      arch/powerpc/math-emu/fcmpu.o
  CC      arch/powerpc/math-emu/fadds.o
  CC      arch/powerpc/math-emu/fctiwz.o
  CC      arch/powerpc/math-emu/fdiv.o
  CC      arch/powerpc/math-emu/fmadds.o
  CC      arch/powerpc/math-emu/fdivs.o
  CC      arch/powerpc/math-emu/fmul.o
  CC      arch/powerpc/math-emu/fmadd.o
  CC      arch/powerpc/math-emu/fmsubs.o
  CC      arch/powerpc/math-emu/fmsub.o
  CC      security/commoncap.o
  LD      usr/built-in.o
  CC      security/min_addr.o
  LD      init/mounts.o
  CC      arch/powerpc/math-emu/fmuls.o
  CC      ipc/util.o
  LD      arch/powerpc/sysdev/built-in.o
  LD      arch/powerpc/kernel/vdso32/built-in.o
  CC      arch/powerpc/math-emu/fnabs.o
  CC      ipc/msgutil.o
  LD      init/built-in.o
  CC      ipc/msg.o
  CC      ipc/sem.o
  CC      arch/powerpc/math-emu/fnmadd.o
  CC      arch/powerpc/math-emu/fnmsubs.o
  CC      ipc/shm.o
  CC      arch/powerpc/math-emu/fneg.o
  CC      arch/powerpc/math-emu/fnmadds.o
  CC      arch/powerpc/math-emu/frsp.o
  CC      arch/powerpc/math-emu/fnmsub.o
  CC      arch/powerpc/math-emu/fres.o
  CC      arch/powerpc/math-emu/frsqrte.o
  CC      arch/powerpc/math-emu/lfs.o
  CC      arch/powerpc/math-emu/fsel.o
  CC      ipc/syscall.o
  CC      arch/powerpc/math-emu/fsub.o
  CC      arch/powerpc/math-emu/fsubs.o
  CC      ipc/ipc_sysctl.o
  CC      arch/powerpc/math-emu/mcrfs.o
  CC      arch/powerpc/math-emu/mffs.o
  CC      arch/powerpc/math-emu/mtfsb0.o
  CC      arch/powerpc/math-emu/mtfsb1.o
  CC      arch/powerpc/math-emu/stfiwx.o
  CC      ipc/mqueue.o
  LD      sound/built-in.o
  CC      ipc/mq_sysctl.o
  CC      arch/powerpc/math-emu/stfs.o
  CC      kernel/fork.o
  CC      arch/powerpc/math-emu/fmr.o
  CC      arch/powerpc/math-emu/lfd.o
  CC      arch/powerpc/math-emu/stfd.o
  CC      kernel/exec_domain.o
  CC      kernel/panic.o
  CC      kernel/exit.o
  CC      kernel/cpu.o
  LD      firmware/built-in.o
  CC      kernel/softirq.o
  CC      kernel/sysctl.o
  CC      kernel/resource.o
  CC      kernel/capability.o
  CC      kernel/ptrace.o
  CC      kernel/sysctl_binary.o
  CC      kernel/signal.o
  CC      kernel/user.o
  CC      kernel/kmod.o
  CC      kernel/pid.o
  CC      kernel/task_work.o
  CC      kernel/sys.o
  CC      kernel/workqueue.o
  CC      kernel/extable.o
  CC      crypto/api.o
  CC      mm/filemap.o
  CC      crypto/cipher.o
  CC      kernel/params.o
  CC      crypto/compress.o
  CC      kernel/kthread.o
  CC      kernel/sys_ni.o
  CC      kernel/nsproxy.o
  CC      crypto/memneq.o
  LD      arch/powerpc/kernel/built-in.o
  CC      mm/mempool.o
  CC      mm/oom_kill.o
  CC      mm/maccess.o
  CC      crypto/crypto_wq.o
  CC      kernel/notifier.o
  CC      block/bio.o
  CC      block/elevator.o
  CC      net/socket.o
  CC      mm/page_alloc.o
  CC      crypto/algapi.o
  LD      arch/powerpc/math-emu/built-in.o
  LD      net/802/built-in.o
  CC      kernel/ksysfs.o
  CC      kernel/cred.o
  CC      kernel/reboot.o
  CC      fs/open.o
  CC      kernel/async.o
  CC      crypto/scatterwalk.o
  LD      drivers/amba/built-in.o
  CC      kernel/range.o
  LD      security/built-in.o
  CC      kernel/smpboot.o
  LD      drivers/auxdisplay/built-in.o
  CC      kernel/groups.o
  CC      drivers/block/brd.o
  LD      drivers/bus/built-in.o
  CC      kernel/bpf/core.o
  CC      crypto/proc.o
  LD      drivers/cdrom/built-in.o
  LD      kernel/livepatch/built-in.o
  CC      net/core/sock.o
  CC      crypto/aead.o
  CC      crypto/ablkcipher.o
  CC      mm/page-writeback.o
  CC      kernel/printk/printk.o
  CC      crypto/blkcipher.o
  CC      crypto/skcipher.o
  CC      mm/readahead.o
  CC      kernel/freezer.o
  CC      kernel/rcu/update.o
  CC      kernel/locking/mutex.o
  CC      kernel/locking/semaphore.o
  CC      kernel/futex.o
  CC      kernel/dma.o
  CC      kernel/power/qos.o
  CC      kernel/up.o
  CC      kernel/irq/irqdesc.o
  CC      drivers/base/component.o
  CC      drivers/char/mem.o
  CC      kernel/module.o
  CC      lib/lockref.o
  CC      kernel/kallsyms.o
  CC      kernel/hung_task.o
  CC      kernel/seccomp.o
  CC      kernel/sched/core.o
  CC      kernel/utsname_sysctl.o
  CC      mm/swap.o
  CC      kernel/elfcore.o
  CC      crypto/chainiv.o
  CC      lib/bcd.o
  CC      kernel/time/time.o
  CC      crypto/eseqiv.o
  CC      kernel/irq_work.o
  CC      kernel/locking/rwsem.o
  CC      kernel/membarrier.o
  CC      kernel/memremap.o
  LD      drivers/block/built-in.o
  CC      lib/div64.o
  CC      kernel/rcu/srcu.o
  CC      lib/sort.o
  CC      kernel/rcu/tiny.o
  LD      ipc/built-in.o
  CC      block/blk-core.o
  LD      drivers/clk/built-in.o
  CC      kernel/locking/percpu-rwsem.o
  LD      drivers/clocksource/built-in.o
  CC      crypto/ahash.o
  CC      net/ethernet/eth.o
  CC      crypto/shash.o
  CC      crypto/pcompress.o
  CC      kernel/irq/handle.o
  LD      drivers/firewire/built-in.o
  LD      drivers/crypto/built-in.o
  CC      block/blk-tag.o
  CC      block/blk-sysfs.o
  CC      lib/parser.o
  CC      drivers/connector/cn_queue.o
  CC      lib/halfmd4.o
  LD      drivers/gpio/built-in.o
  CC      crypto/akcipher.o
  CC      mm/truncate.o
  LD      drivers/firmware/broadcom/built-in.o
  CC      kernel/locking/rtmutex.o
  CC      drivers/base/core.o
  CC      lib/random32.o
  CC      lib/debug_locks.o
  CC      crypto/algboss.o
  CC      lib/bust_spinlocks.o
  LD      drivers/firmware/built-in.o
  CC      kernel/power/main.o
  CC      crypto/testmgr.o
  LD      drivers/hsi/controllers/built-in.o
  LD      drivers/hsi/clients/built-in.o
  LD      drivers/gpu/drm/bridge/built-in.o
  CC      kernel/locking/rwsem-xadd.o
  CC      crypto/crypto_null.o
  CC      lib/kasprintf.o
  CC      crypto/md5.o
  CC      crypto/ecb.o
  LD      drivers/hsi/built-in.o
  CC      fs/read_write.o
  CC      lib/bitmap.o
  CC      crypto/cbc.o
  LD      drivers/gpu/drm/panel/built-in.o
  LD      drivers/gpu/drm/i2c/built-in.o
  CC      crypto/pcbc.o
  LD      kernel/rcu/built-in.o
  CC      drivers/char/random.o
  LD      drivers/i2c/algos/built-in.o
  CC      block/blk-flush.o
  CC      drivers/char/misc.o
  CC      crypto/des_generic.o
  LD      drivers/char/agp/built-in.o
  LD      drivers/gpu/drm/tilcdc/built-in.o
  LD      drivers/idle/built-in.o
  CC      kernel/irq/manage.o
  LD      kernel/bpf/built-in.o
  LD      drivers/i2c/busses/built-in.o
  CC      drivers/base/bus.o
  CC      mm/vmscan.o
  LD      drivers/gpu/drm/built-in.o
  CC      kernel/time/timer.o
  LD      kernel/printk/built-in.o
  CC      lib/scatterlist.o
  CC      kernel/sched/loadavg.o
  LD      drivers/iommu/built-in.o
  CC      lib/gcd.o
  CC      kernel/time/hrtimer.o
  LD      net/ethernet/built-in.o
  LD      drivers/i2c/muxes/built-in.o
  CC      lib/lcm.o
  CC      kernel/time/itimer.o
  CC      crypto/aes_generic.o
  LD      drivers/i2c/built-in.o
  CC      block/blk-settings.o
  CC      drivers/connector/connector.o
  CC      net/core/request_sock.o
  LD      drivers/leds/built-in.o
  LD      kernel/locking/built-in.o
  CC      drivers/irqchip/irqchip.o
  CC      lib/list_sort.o
  CC      drivers/gpu/vga/vgaarb.o
  CC      mm/shmem.o
  CC      crypto/rng.o
  CC      lib/uuid.o
  CC      mm/util.o
  LD      drivers/lguest/built-in.o
  CC      block/blk-ioc.o
  LD      drivers/macintosh/built-in.o
  CC [M]  crypto/echainiv.o
  CC      kernel/power/process.o
  CC [M]  crypto/hmac.o
  CC [M]  crypto/sha256_generic.o
  CC [M]  crypto/drbg.o
  CC [M]  crypto/jitterentropy.o
  CC [M]  crypto/jitterentropy-kcapi.o
  CC      lib/flex_array.o
  CC      lib/iov_iter.o
  LD      drivers/mfd/built-in.o
  CC      lib/clz_ctz.o
  CC      mm/mmzone.o
  CC      net/ipv6/addrconf_core.o
  CC      kernel/sched/clock.o
  CC      net/ipv6/exthdrs_core.o
  CC      block/blk-map.o
  CC      net/core/skbuff.o
  CC      mm/vmstat.o
  LD      crypto/crypto.o
  LD      drivers/irqchip/built-in.o
  LD      crypto/crypto_algapi.o
  LD      crypto/crypto_blkcipher.o
  CC      net/core/datagram.o
  CC      kernel/time/posix-timers.o
  LD      crypto/crypto_hash.o
  LD      drivers/media/firewire/built-in.o
  LD      crypto/cryptomgr.o
  LD      drivers/mmc/built-in.o
  LD      drivers/media/common/b2c2/built-in.o
  CC      lib/bsearch.o
  CC      lib/find_bit.o
  CC      fs/file_table.o
  LD      drivers/misc/eeprom/built-in.o
  LD      drivers/misc/cb710/built-in.o
  CC      fs/super.o
  LD      drivers/media/common/saa7146/built-in.o
  CC      lib/llist.o
  LD      drivers/misc/lis3lv02d/built-in.o
  LD      drivers/media/i2c/soc_camera/built-in.o
  CC      block/blk-exec.o
  CC      drivers/base/dd.o
  CC      mm/backing-dev.o
  CC      kernel/irq/spurious.o
  LD      drivers/media/i2c/built-in.o
  CC      lib/memweight.o
  LD      drivers/char/built-in.o
  LD      drivers/misc/mic/bus/built-in.o
  LD      drivers/media/common/siano/built-in.o
  LD      drivers/misc/mic/built-in.o
  CC      mm/mm_init.o
  CC      mm/mmu_context.o
  CC      lib/kfifo.o
  CC      net/core/stream.o
  CC      drivers/connector/cn_proc.o
  CC      kernel/power/suspend.o
  CC      mm/percpu.o
  CC      mm/slab_common.o
  CC      net/ipv4/route.o
  CC      kernel/sched/cputime.o
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  CC      lib/percpu-refcount.o
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  CC      drivers/net/loopback.o
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  CC      drivers/pci/access.o
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  LD      drivers/net/ethernet/alteon/built-in.o
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  LD      drivers/net/ethernet/emulex/built-in.o
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  LD      fs/exofs/built-in.o
  CC      net/ipv4/ping.o
  CC      net/sunrpc/auth_generic.o
  CC      net/sunrpc/auth_unix.o
  CC      net/ipv4/ip_tunnel_core.o
  LD      drivers/net/ethernet/ibm/emac/ibm_emac.o
  CC      net/ipv4/gre_offload.o
  CC      net/ipv4/sysctl_net_ipv4.o
  LD      drivers/net/ethernet/ibm/emac/built-in.o
  CC      net/ipv4/ipconfig.o
  LD      drivers/net/ethernet/ibm/built-in.o
  CC      net/ipv4/proc.o
  CC      net/ipv4/inet_diag.o
  CC      fs/kernfs/mount.o
  LD      drivers/net/ethernet/built-in.o
  CC      fs/ext2/balloc.o
  CC      net/sunrpc/svc.o
  CC      net/sunrpc/svcsock.o
  CC      net/ipv4/tcp_diag.o
  LD      net/unix/unix.o
  LD      net/unix/built-in.o
  CC      fs/jffs2/compr.o
  CC      fs/nfs_common/grace.o
  LD      fs/cramfs/cramfs.o
  CC      drivers/tty/serial/of_serial.o
  CC      fs/lockd/clntlock.o
  LD      fs/cramfs/built-in.o
  CC      net/sunrpc/svcauth.o
  CC      drivers/tty/serial/8250/8250_core.o
  AR      lib/lib.a
  LD      fs/devpts/devpts.o
  CC      net/ipv4/tcp_cubic.o
  CC      fs/kernfs/inode.o
  LD      fs/devpts/built-in.o
  CC      drivers/tty/serial/8250/8250_port.o
  CC      net/sunrpc/svcauth_unix.o
  CC      net/sunrpc/addr.o
  CC      fs/kernfs/dir.o
  CC      net/sunrpc/rpcb_clnt.o
  LD      fs/quota/built-in.o
  CC      fs/notify/fsnotify.o
  CC      net/sunrpc/timer.o
  CC      fs/nfs/client.o
  LD      fs/debugfs/debugfs.o
  CC      fs/nfs/dir.o
  CC      net/sunrpc/xdr.o
  CC      fs/nfs/file.o
  LD      fs/debugfs/built-in.o
  CC      net/sunrpc/sunrpc_syms.o
  CC      fs/ramfs/inode.o
  CC      fs/eventpoll.o
  CC      fs/nfs/getroot.o
  CC      fs/sysfs/file.o
/home/kisskb/slave/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/home/kisskb/slave/src/drivers/tty/serial/8250/8250_core.c:255:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/home/kisskb/slave/src/drivers/tty/serial/8250/8250_core.c:235:19: note: 'i' was declared here
  CC      fs/ramfs/file-mmu.o
  CC      fs/sysfs/dir.o
  CC      fs/jffs2/dir.o
  CC      fs/sysfs/symlink.o
  CC      fs/proc/task_mmu.o
  LD      drivers/net/built-in.o
  LD      fs/nfs_common/built-in.o
  CC      fs/proc/inode.o
  CC      fs/anon_inodes.o
  CC      net/sunrpc/cache.o
  CC      fs/ext2/dir.o
  CC      fs/ext2/file.o
  CC      fs/ext2/ialloc.o
  CC      fs/signalfd.o
  CC      fs/timerfd.o
  CC      fs/ext2/inode.o
  CC      fs/kernfs/file.o
  CC      drivers/tty/serial/8250/8250_early.o
  CC      fs/eventfd.o
  CC      fs/kernfs/symlink.o
  CC      fs/sysfs/mount.o
  CC      fs/ext2/ioctl.o
  CC      drivers/tty/serial/8250/8250_fsl.o
  CC      fs/ext2/namei.o
  CC      fs/notify/notification.o
  CC      net/sunrpc/rpc_pipe.o
  CC      fs/sysfs/group.o
  CC      net/sunrpc/svc_xprt.o
  CC      fs/lockd/clntproc.o
  CC      fs/nfs/inode.o
  LD      fs/ramfs/ramfs.o
  CC      net/sunrpc/stats.o
  LD      fs/ramfs/built-in.o
  LD      drivers/tty/serial/8250/8250.o
  CC      fs/aio.o
  CC      fs/ext2/symlink.o
  CC      fs/ext2/super.o
  CC      fs/lockd/clntxdr.o
  CC      net/sunrpc/sysctl.o
  CC      fs/jffs2/file.o
  CC      fs/locks.o
  CC      fs/binfmt_script.o
  CC      fs/jffs2/ioctl.o
  CC      fs/jffs2/nodelist.o
  CC      fs/binfmt_elf.o
  CC      fs/jffs2/malloc.o
  CC      fs/jffs2/read.o
  CC      fs/proc/root.o
  CC      fs/proc/base.o
  CC      fs/lockd/host.o
  CC      fs/proc/generic.o
  CC      fs/lockd/svc.o
  CC      fs/coredump.o
  CC      fs/lockd/svclock.o
  CC      fs/lockd/svcshare.o
  CC      fs/drop_caches.o
  CC      fs/lockd/svcproc.o
  CC      fs/nfs/super.o
  LD      fs/sysfs/built-in.o
  CC      fs/lockd/svcsubs.o
  CC      fs/notify/group.o
  CC      fs/nfs/direct.o
  CC      fs/notify/inode_mark.o
  CC      fs/nfs/pagelist.o
  CC      fs/notify/mark.o
  CC      fs/nfs/read.o
  LD      fs/kernfs/built-in.o
  LD      net/ipv4/built-in.o
  CC      fs/proc/array.o
  CC      fs/jffs2/nodemgmt.o
  CC      fs/notify/vfsmount_mark.o
  CC      fs/lockd/mon.o
  CC      fs/jffs2/readinode.o
  LD      drivers/tty/serial/8250/8250_base.o
  CC      fs/lockd/xdr.o
  CC      fs/jffs2/write.o
  CC      fs/lockd/clnt4xdr.o
  CC      fs/jffs2/scan.o
  LD      drivers/tty/serial/8250/built-in.o
  CC      fs/jffs2/gc.o
  CC      fs/notify/fdinfo.o
  LD      drivers/tty/serial/built-in.o
  CC      fs/jffs2/symlink.o
  CC      fs/jffs2/build.o
  LD      drivers/tty/built-in.o
  CC      fs/proc/fd.o
  CC      fs/proc/proc_tty.o
  CC      fs/lockd/xdr4.o
  CC      fs/notify/dnotify/dnotify.o
  LD      fs/notify/fanotify/built-in.o
  LD      drivers/built-in.o
  CC      fs/lockd/svc4proc.o
  CC      fs/lockd/procfs.o
  CC      fs/nfs/symlink.o
  CC      fs/proc/cmdline.o
  CC      fs/notify/inotify/inotify_fsnotify.o
  CC      fs/jffs2/erase.o
  CC      fs/jffs2/background.o
  CC      fs/jffs2/fs.o
  CC      fs/jffs2/writev.o
  CC      fs/proc/consoles.o
  CC      fs/jffs2/super.o
  CC      fs/notify/inotify/inotify_user.o
  CC      fs/nfs/unlink.o
  CC      fs/jffs2/debug.o
  CC      fs/jffs2/wbuf.o
  CC      fs/proc/cpuinfo.o
  CC      fs/proc/devices.o
  CC      fs/jffs2/compr_rtime.o
  CC      fs/proc/interrupts.o
  CC      fs/jffs2/compr_zlib.o
  CC      fs/proc/meminfo.o
  CC      fs/proc/loadavg.o
  CC      fs/proc/stat.o
  CC      fs/nfs/write.o
  CC      fs/nfs/namespace.o
  CC      fs/proc/uptime.o
  LD      fs/notify/dnotify/built-in.o
  CC      fs/proc/version.o
  CC      fs/nfs/nfstrace.o
  CC      fs/nfs/mount_clnt.o
  CC      fs/proc/softirqs.o
  CC      fs/proc/namespaces.o
  CC      fs/proc/self.o
  CC      fs/nfs/nfsroot.o
  CC      fs/proc/thread_self.o
  CC      fs/proc/proc_sysctl.o
  CC      fs/nfs/sysctl.o
  CC      fs/nfs/nfs2super.o
  LD      net/sunrpc/sunrpc.o
  LD      net/sunrpc/built-in.o
  LD      fs/ext2/ext2.o
  LD      fs/ext2/built-in.o
  LD      net/built-in.o
  CC      fs/proc/proc_net.o
  CC      fs/proc/kcore.o
  CC      fs/nfs/proc.o
  CC      fs/proc/kmsg.o
  CC      fs/nfs/nfs2xdr.o
  CC      fs/proc/page.o
  CC      fs/nfs/nfs3super.o
  CC      fs/nfs/nfs3client.o
  CC      fs/nfs/nfs3proc.o
  CC      fs/nfs/nfs3xdr.o
  LD      fs/lockd/lockd.o
  LD      fs/lockd/built-in.o
  LD      fs/notify/inotify/built-in.o
  LD      fs/notify/built-in.o
  LD      fs/jffs2/jffs2.o
  LD      fs/jffs2/built-in.o
  LD      fs/nfs/nfsv2.o
  LD      fs/proc/proc.o
  LD      fs/proc/built-in.o
  LD      fs/nfs/nfsv3.o
  LD      fs/nfs/nfs.o
  LD      fs/nfs/built-in.o
  LD      fs/built-in.o
  LINK    vmlinux
  LD      vmlinux.o
  MODPOST vmlinux.o
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
  KSYM    .tmp_kallsyms1.o
  KSYM    .tmp_kallsyms2.o
  LD      vmlinux
  SYSMAP  System.map
  Building modules, stage 2.
  MODPOST 5 modules
  BOOTCC  arch/powerpc/boot/4xx.o
  BOOTCC  arch/powerpc/boot/bamboo.o
  BOOTCC  arch/powerpc/boot/cpm-serial.o
  BOOTCC  arch/powerpc/boot/cuboot.o
  COPY    arch/powerpc/boot/inflate.h
  COPY    arch/powerpc/boot/inftrees.h
  COPY    arch/powerpc/boot/infutil.h
  COPY    arch/powerpc/boot/libfdt.h
  COPY    arch/powerpc/boot/zutil.h
  COPY    arch/powerpc/boot/libfdt_internal.h
  COPY    arch/powerpc/boot/fdt.h
  COPY    arch/powerpc/boot/zlib.h
  COPY    arch/powerpc/boot/zconf.h
  BOOTAS  arch/powerpc/boot/crt0.o
  COPY    arch/powerpc/boot/inffixed.h
  BOOTCC  arch/powerpc/boot/mpc52xx-psc.o
  BOOTCC  arch/powerpc/boot/elf_util.o
  BOOTCC  arch/powerpc/boot/devtree.o
  BOOTCC  arch/powerpc/boot/ebony.o
  COPY    arch/powerpc/boot/inffast.h
  CC      crypto/drbg.mod.o
  BOOTAS  arch/powerpc/boot/crtsavres.o
  BOOTAS  arch/powerpc/boot/div64.o
  BOOTCC  arch/powerpc/boot/mpsc.o
  BOOTCC  arch/powerpc/boot/ns16550.o
  BOOTCC  arch/powerpc/boot/ofconsole.o
  CC      crypto/echainiv.mod.o
  CC      crypto/sha256_generic.mod.o
  BOOTCC  arch/powerpc/boot/stdlib.o
  CC      crypto/jitterentropy_rng.mod.o
  BOOTAS  arch/powerpc/boot/string.o
  BOOTCC  arch/powerpc/boot/stdio.o
  BOOTCC  arch/powerpc/boot/uartlite.o
  BOOTCC  arch/powerpc/boot/cuboot-rainier.o
  BOOTCC  arch/powerpc/boot/cuboot-sam440ep.o
  BOOTCC  arch/powerpc/boot/cuboot-warp.o
  BOOTCC  arch/powerpc/boot/cuboot-yosemite.o
  BOOTAS  arch/powerpc/boot/fixed-head.o
  BOOTCC  arch/powerpc/boot/of.o
  CC      crypto/hmac.mod.o
  BOOTCC  arch/powerpc/boot/cuboot-bamboo.o
  BOOTCC  arch/powerpc/boot/treeboot-akebono.o
  BOOTCC  arch/powerpc/boot/oflib.o
  BOOTCC  arch/powerpc/boot/simpleboot.o
  BOOTCC  arch/powerpc/boot/cuboot-ebony.o
  BOOTCC  arch/powerpc/boot/cuboot-katmai.o
  BOOTAS  arch/powerpc/boot/util.o
  BOOTCC  arch/powerpc/boot/serial.o
/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc -m32 -Wp,-MD,arch/powerpc/boot/.zImage.lds.d  -nostdinc -isystem /opt/cross/gcc-4.6.3-nolibc/powerpc-linux/lib/gcc/powerpc-linux/4.6.3/include -I/home/kisskb/slave/src/arch/powerpc/include -Iarch/powerpc/include/generated/uapi -Iarch/powerpc/include/generated  -I/home/kisskb/slave/src/include -Iinclude -I/home/kisskb/slave/src/arch/powerpc/include/uapi -Iarch/powerpc/include/generated/uapi -I/home/kisskb/slave/src/include/uapi -Iinclude/generated/uapi -include /home/kisskb/slave/src/include/linux/kconfig.h -D__KERNEL__  -I/home/kisskb/slave/src/arch/powerpc -Iarch/powerpc -E -Wp,-MD,arch/powerpc/boot/.zImage.lds.d -P -Upowerpc \
	-D__ASSEMBLY__ -DLINKER_SCRIPT -o arch/powerpc/boot/zImage.lds /home/kisskb/slave/src/arch/powerpc/boot/zImage.lds.S
  BOOTCC  arch/powerpc/boot/simple_alloc.o
  BOOTCC  arch/powerpc/boot/virtex.o
  BOOTCC  arch/powerpc/boot/cuboot-taishan.o
  BOOTCC  arch/powerpc/boot/epapr.o
  BOOTCC  arch/powerpc/boot/treeboot-currituck.o
  BOOTCC  arch/powerpc/boot/treeboot-bamboo.o
  BOOTCC  arch/powerpc/boot/cuboot-sequoia.o
  HOSTCC  arch/powerpc/boot/addnote
  BOOTCC  arch/powerpc/boot/treeboot-ebony.o
  BOOTCC  arch/powerpc/boot/treeboot-iss4xx.o
  HOSTCC  arch/powerpc/boot/hack-coff
  DTC     arch/powerpc/boot/ebony.dtb
  COPY    arch/powerpc/boot/fdt.c
  HOSTCC  arch/powerpc/boot/mktree
  COPY    arch/powerpc/boot/fdt_rw.c
  COPY    arch/powerpc/boot/fdt_strerror.c
  COPY    arch/powerpc/boot/fdt_ro.c
  COPY    arch/powerpc/boot/inffast.c
  BOOTCC  arch/powerpc/boot/libfdt-wrapper.o
  COPY    arch/powerpc/boot/fdt_sw.c
  COPY    arch/powerpc/boot/inflate.c
  COPY    arch/powerpc/boot/fdt_wip.c
  COPY    arch/powerpc/boot/inftrees.c
  BOOTCC  arch/powerpc/boot/fdt_ro.o
  BOOTCC  arch/powerpc/boot/main.o
  BOOTCC  arch/powerpc/boot/fdt.o
  BOOTCC  arch/powerpc/boot/fdt_strerror.o
  BOOTCC  arch/powerpc/boot/empty.o
  BOOTCC  arch/powerpc/boot/gunzip_util.o
  BOOTCC  arch/powerpc/boot/fdt_rw.o
  BOOTCC  arch/powerpc/boot/inffast.o
  BOOTCC  arch/powerpc/boot/fdt_sw.o
  BOOTCC  arch/powerpc/boot/inflate.o
  BOOTCC  arch/powerpc/boot/inftrees.o
  BOOTCC  arch/powerpc/boot/fdt_wip.o
  LD [M]  crypto/echainiv.ko
  LD [M]  crypto/sha256_generic.ko
  LD [M]  crypto/jitterentropy_rng.ko
  LD [M]  crypto/drbg.ko
  LD [M]  crypto/hmac.ko
  BOOTAR  arch/powerpc/boot/wrapper.a
  WRAP    arch/powerpc/boot/treeImage.ebony
  WRAP    arch/powerpc/boot/cuImage.ebony
INFO: Uncompressed kernel (size 0x416e9c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
INFO: Uncompressed kernel (size 0x416e9c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-4.3.0-rc3-g53c656c
Created:      Wed Oct 21 21:18:21 2015
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2088751 Bytes = 2039.80 kB = 1.99 MB
Load Address: 00500000
Entry Point:  005000a4
rm arch/powerpc/boot/ebony.dtb
make[1]: Leaving directory '/home/kisskb/slave/build/mpe_44x_ebony_defconfig_powerpc'
Completed OK
# rm -rf /home/kisskb/slave/build/mpe_44x_ebony_defconfig_powerpc
# Build took: 0:00:31.728950