# git rev-parse -q --verify f098062ea2e4884a5cd42dee46d5b7cba8c99e22^{commit}
f098062ea2e4884a5cd42dee46d5b7cba8c99e22
already have revision, skipping fetch
# git checkout -q -f -B kisskb f098062ea2e4884a5cd42dee46d5b7cba8c99e22
# git clean -qxdf
# git log -1
commit f098062ea2e4884a5cd42dee46d5b7cba8c99e22
Author: Nicholas Piggin <npiggin@gmail.com>
Date:   Wed Jan 17 23:58:18 2018 +1000

    powerpc/64s: Improve RFI L1-D cache flush fallback
    
    The fallback RFI flush is used when firmware does not provide a way
    to flush the cache. It's a "displacement flush" that evicts useful
    data by displacing it with an uninteresting buffer.
    
    The flush has to take care to work with implementation specific cache
    replacment policies, so the recipe has been in flux. The initial
    slow but conservative approach is to touch all lines of a congruence
    class, with dependencies between each load. It has since been
    determined that a linear pattern of loads without dependencies is
    sufficient, and is significantly faster.
    
    Measuring the speed of a null syscall with RFI fallback flush enabled
    gives the relative improvement:
    
    P8 - 1.83x
    P9 - 1.75x
    
    The flush also becomes simpler and more adaptable to different cache
    geometries.
    
    Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-gcc --version
# < git log --format=%s --max-count=1 f098062ea2e4884a5cd42dee46d5b7cba8c99e22
# < make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64le_defconfig_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  ppc64le_defconfig
# make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64le_defconfig_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  
make[1]: Entering directory '/home/kisskb/slave/build/powerpc-next_ppc64le_defconfig_ppc64le'
  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/kallsyms
  HOSTCC  scripts/pnmtologo
  HOSTCC  scripts/conmakehash
  HOSTCC  scripts/sortextable
  HOSTCC  scripts/asn1_compiler
  HOSTCC  scripts/extract-cert
  HOSTCC  scripts/genksyms/genksyms.o
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  SHIPPED scripts/genksyms/parse.tab.c
  SHIPPED scripts/genksyms/lex.lex.c
  SHIPPED scripts/genksyms/parse.tab.h
  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/genksyms/parse.tab.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/genksyms/lex.lex.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  SHIPPED scripts/dtc/dtc-parser.tab.c
  HOSTCC  scripts/dtc/util.o
  SHIPPED scripts/dtc/dtc-lexer.lex.c
  SHIPPED scripts/dtc/dtc-parser.tab.h
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  CC      kernel/bounds.s
  CHK     include/generated/timeconst.h
  UPD     include/generated/timeconst.h
  CHK     scripts/mod/devicetable-offsets.h
  UPD     scripts/mod/devicetable-offsets.h
  MKELF   scripts/mod/elfconfig.h
  CHK     include/generated/bounds.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  UPD     include/generated/bounds.h
  CC      arch/powerpc/kernel/asm-offsets.s
  HOSTLD  scripts/dtc/dtc
  HOSTLD  scripts/genksyms/genksyms
  CHK     include/generated/asm-offsets.h
  UPD     include/generated/asm-offsets.h
  CALL    /home/kisskb/slave/src/scripts/checksyscalls.sh
  HOSTLD  scripts/mod/modpost
  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/do_mounts_md.o
  HOSTCC  usr/gen_init_cpio
  CC      init/initramfs.o
  CC      init/init_task.o
  CC      arch/powerpc/kernel/cputable.o
  CC      arch/powerpc/kernel/syscalls.o
  CC      arch/powerpc/kernel/ptrace.o
  CC      arch/powerpc/kernel/align.o
  CC      arch/powerpc/kernel/pmc.o
  CC      arch/powerpc/kernel/irq.o
  CC      arch/powerpc/kernel/vdso.o
  CC      arch/powerpc/kernel/signal_32.o
  UPD     include/generated/compile.h
  CPP     arch/powerpc/kernel/systbl_chk.i
  CC      arch/powerpc/kernel/process.o
  CC      arch/powerpc/mm/mem.o
  CC      arch/powerpc/kernel/idle.o
  CC      arch/powerpc/kernel/signal.o
  CC      arch/powerpc/kernel/sysfs.o
  CC      arch/powerpc/kernel/cacheinfo.o
  CC      arch/powerpc/mm/pgtable.o
  CC      arch/powerpc/mm/fault.o
  CC      arch/powerpc/kernel/time.o
  CC      arch/powerpc/mm/mmap.o
  AS      arch/powerpc/lib/string.o
  CC      arch/powerpc/lib/alloc.o
  CC      arch/powerpc/kernel/traps.o
  CC      arch/powerpc/mm/pgtable_64.o
  CC      arch/powerpc/kernel/setup-common.o
  CC      init/version.o
  AS      arch/powerpc/mm/slb_low.o
  CC      arch/powerpc/kernel/prom.o
  CC      arch/powerpc/mm/mmu_context.o
  CC      arch/powerpc/lib/code-patching.o
  CC      arch/powerpc/mm/init_64.o
  CC      arch/powerpc/lib/feature-fixups.o
  AS      arch/powerpc/lib/checksum_64.o
  CC      arch/powerpc/mm/drmem.o
  AS      arch/powerpc/kernel/misc.o
  CC      arch/powerpc/mm/pgtable-hash64.o
  CC      arch/powerpc/mm/hash_utils_64.o
  CC      arch/powerpc/kernel/io.o
  CC      arch/powerpc/mm/init-common.o
  CC      arch/powerpc/kernel/udbg.o
  CC      arch/powerpc/kernel/dma.o
  CC      arch/powerpc/sysdev/mpic.o
  CC      arch/powerpc/mm/slb.o
  GEN     usr/initramfs_data.cpio
  AS      arch/powerpc/kernel/misc_64.o
  CC      arch/powerpc/lib/checksum_wrappers.o
  CC      arch/powerpc/kernel/of_platform.o
  CC      arch/powerpc/lib/sstep.o
  CC      arch/powerpc/kernel/prom_parse.o
  AS      usr/initramfs_data.o
  AS      arch/powerpc/lib/ldstfp.o
  CC      arch/powerpc/kernel/setup_64.o
  AS      arch/powerpc/lib/quad.o
  CC      arch/powerpc/kernel/sys_ppc32.o
  AS      arch/powerpc/lib/feature-fixups-test.o
  CC      arch/powerpc/kernel/signal_64.o
  AR      usr/built-in.o
  CC      arch/powerpc/mm/hash_native_64.o
  CC      arch/powerpc/lib/xor_vmx.o
  CC      arch/powerpc/lib/xor_vmx_glue.o
  CC      arch/powerpc/kernel/ptrace32.o
  CC      arch/powerpc/platforms/powernv/setup.o
  AS      arch/powerpc/lib/copypage_64.o
  CC      arch/powerpc/platforms/pseries/lpar.o
  CC      arch/powerpc/kernel/nvram_64.o
  CC      arch/powerpc/kernel/paca.o
  CC      arch/powerpc/mm/mmu_context_book3s64.o
  CC      arch/powerpc/kernel/firmware.o
  CC      arch/powerpc/kernel/watchdog.o
  CC      arch/powerpc/kernel/hw_breakpoint.o
  AS      arch/powerpc/lib/copyuser_64.o
  CC      arch/powerpc/mm/pgtable-book3s64.o
  CC      arch/powerpc/mm/pgtable-radix.o
  AS      arch/powerpc/kernel/cpu_setup_ppc970.o
  AS      arch/powerpc/kernel/cpu_setup_pa6t.o
  CC      arch/powerpc/mm/tlb-radix.o
  CC      arch/powerpc/mm/tlb_hash64.o
  AS      arch/powerpc/kernel/cpu_setup_power.o
  CC      arch/powerpc/mm/hash64_64k.o
  CC      arch/powerpc/mm/numa.o
  CC      arch/powerpc/mm/vphn.o
  CC      arch/powerpc/kernel/mce.o
  AS      arch/powerpc/lib/mem_64.o
  CC      arch/powerpc/kernel/mce_power.o
  AS      arch/powerpc/lib/hweight_64.o
  AS      arch/powerpc/lib/copyuser_power7.o
  CC      arch/powerpc/mm/slice.o
  AS      arch/powerpc/platforms/powernv/opal-wrappers.o
  CC      arch/powerpc/kernel/trace/ftrace.o
  CC      arch/powerpc/mm/hugetlbpage.o
  LDS     arch/powerpc/kernel/vdso64/vdso64.lds
  CC      arch/powerpc/kernel/vecemu.o
  CC      arch/powerpc/platforms/powernv/opal.o
  AS      arch/powerpc/kernel/vdso64/sigtramp.o
  AS      arch/powerpc/lib/string_64.o
  AS      arch/powerpc/kernel/idle_book3s.o
  CC      arch/powerpc/mm/hugetlbpage-hash64.o
  AS      arch/powerpc/lib/copypage_power7.o
  CC      arch/powerpc/kernel/proc_powerpc.o
  AS      arch/powerpc/kernel/vdso64/gettimeofday.o
  CC      arch/powerpc/mm/hugetlbpage-radix.o
  CC      arch/powerpc/kernel/rtas.o
  AS      arch/powerpc/kernel/vdso64/datapage.o
  AS      arch/powerpc/lib/memcpy_power7.o
  AR      init/mounts.o
  AS      arch/powerpc/lib/memcpy_64.o
  CC      arch/powerpc/kernel/rtas-rtc.o
  CC      arch/powerpc/kernel/rtas_pci.o
  AS      arch/powerpc/lib/memcmp_64.o
  AS      arch/powerpc/kernel/vdso64/cacheflush.o
  CC      arch/powerpc/lib/pmem.o
  CC      arch/powerpc/lib/locks.o
  CC      arch/powerpc/kernel/rtasd.o
  AS      arch/powerpc/kernel/vdso64/note.o
  CC      arch/powerpc/lib/vmx-helper.o
  CC      arch/powerpc/kernel/rtas-proc.o
  CC      arch/powerpc/kernel/dt_cpu_ftrs.o
  CC      arch/powerpc/kernel/eeh.o
  CC      arch/powerpc/kernel/eeh_pe.o
  CC      arch/powerpc/mm/hugepage-hash64.o
  CC      arch/powerpc/kernel/eeh_dev.o
  AS      arch/powerpc/kernel/vdso64/getcpu.o
  CC      arch/powerpc/kernel/eeh_cache.o
  AR      init/built-in.o
  CC      arch/powerpc/mm/copro_fault.o
  CC      arch/powerpc/kernel/eeh_driver.o
  CC      arch/powerpc/kernel/eeh_sysfs.o
  CC      arch/powerpc/kernel/eeh_event.o
  VDSO64L arch/powerpc/kernel/vdso64/vdso64.so.dbg
  AR      arch/powerpc/crypto/built-in.o
  OBJCOPY arch/powerpc/kernel/vdso64/vdso64.so
  CC      arch/powerpc/mm/pkeys.o
  CC      arch/powerpc/mm/mmu_context_iommu.o
  AS      arch/powerpc/kernel/vdso64/vdso64_wrapper.o
  AR      arch/powerpc/math-emu/built-in.o
  AS [M]  arch/powerpc/crypto/md5-asm.o
  CC      arch/powerpc/kernel/crash_dump.o
  CC      arch/powerpc/kernel/module.o
  AR      arch/powerpc/kernel/vdso64/built-in.o
  CC      arch/powerpc/kernel/module_64.o
  CC      arch/powerpc/kernel/dbell.o
  CC      arch/powerpc/kernel/jump_label.o
  CC [M]  arch/powerpc/crypto/md5-glue.o
  AS      arch/powerpc/kernel/reloc_64.o
  CC      arch/powerpc/platforms/powernv/opal-async.o
  CC      arch/powerpc/kernel/trace/trace_clock.o
  CC      arch/powerpc/kernel/dma-iommu.o
  CC      arch/powerpc/kernel/iommu.o
  AS      arch/powerpc/net/bpf_jit_asm64.o
  CC      arch/powerpc/kernel/btext.o
  CC      arch/powerpc/platforms/powernv/idle.o
  CC      arch/powerpc/kernel/smp.o
  CC      arch/powerpc/net/bpf_jit_comp64.o
  CC      arch/powerpc/platforms/powernv/opal-nvram.o
  CC      arch/powerpc/platforms/powernv/opal-rtc.o
  CC      arch/powerpc/kernel/kprobes.o
  CC      arch/powerpc/kernel/optprobes.o
  CC      arch/powerpc/sysdev/mpic_msi.o
  CC      arch/powerpc/sysdev/mpic_u3msi.o
  AS      arch/powerpc/kernel/optprobes_head.o
  AS      arch/powerpc/kernel/trace/ftrace_64.o
  AS      arch/powerpc/kernel/trace/ftrace_64_pg.o
  CC      arch/powerpc/xmon/xmon.o
  CC      arch/powerpc/xmon/nonstdio.o
  CC      arch/powerpc/kernel/uprobes.o
  AS      arch/powerpc/platforms/pseries/hvCall.o
  CC      arch/powerpc/platforms/powernv/opal-lpc.o
  AS [M]  arch/powerpc/crypto/sha1-powerpc-asm.o
  CC      arch/powerpc/kernel/legacy_serial.o
  CC [M]  arch/powerpc/crypto/sha1.o
  CC      arch/powerpc/platforms/pseries/nvram.o
  CC      arch/powerpc/kernel/udbg_16550.o
  CC      arch/powerpc/kernel/stacktrace.o
  AS [M]  arch/powerpc/crypto/crc32c-vpmsum_asm.o
  CC      arch/powerpc/platforms/powernv/opal-flash.o
  CC      arch/powerpc/kernel/pci_64.o
  CC      arch/powerpc/kernel/pci_dn.o
  CC      arch/powerpc/platforms/powernv/rng.o
  CC      arch/powerpc/kernel/pci-hotplug.o
  CC      arch/powerpc/kernel/isa-bridge.o
  CC [M]  arch/powerpc/crypto/crc32c-vpmsum_glue.o
  LD [M]  arch/powerpc/crypto/md5-ppc.o
  AR      arch/powerpc/kernel/trace/built-in.o
  CC      arch/powerpc/kernel/pci-common.o
  CC      arch/powerpc/kernel/msi.o
  CC      arch/powerpc/kernel/pci_of_scan.o
  CC      arch/powerpc/kernel/machine_kexec.o
  AS      arch/powerpc/xmon/spr_access.o
  CC      arch/powerpc/platforms/powernv/opal-elog.o
  CC      arch/powerpc/kernel/crash.o
  CC      arch/powerpc/kernel/machine_kexec_64.o
  CC      arch/powerpc/kernel/machine_kexec_file_64.o
  CC      arch/powerpc/kernel/kexec_elf_64.o
  AS      arch/powerpc/kernel/tm.o
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c: In function 'dump_one_paca':
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2339:63: error: 'struct paca_struct' has no member named 'l1d_flush_congruence'
  printf(" %-*s = %#-*"format"\t(0x%lx)\n", 20, #name, 18, paca->name, \
                                                               ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2380:2: note: in expansion of macro 'DUMP'
  DUMP(p, l1d_flush_congruence, "llx");
  ^
In file included from /home/kisskb/slave/src/include/linux/compiler_types.h:58:0,
                 from /home/kisskb/slave/src/include/linux/linkage.h:5,
                 from /home/kisskb/slave/src/include/linux/kernel.h:7,
                 from /home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:14:
/home/kisskb/slave/src/include/linux/compiler-gcc.h:166:2: error: 'struct paca_struct' has no member named 'l1d_flush_congruence'
  __builtin_offsetof(a, b)
  ^
/home/kisskb/slave/src/include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof'
 #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2340:3: note: in expansion of macro 'offsetof'
   offsetof(struct paca_struct, name));
   ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2380:2: note: in expansion of macro 'DUMP'
  DUMP(p, l1d_flush_congruence, "llx");
  ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2339:63: error: 'struct paca_struct' has no member named 'l1d_flush_sets'
  printf(" %-*s = %#-*"format"\t(0x%lx)\n", 20, #name, 18, paca->name, \
                                                               ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2381:2: note: in expansion of macro 'DUMP'
  DUMP(p, l1d_flush_sets, "llx");
  ^
In file included from /home/kisskb/slave/src/include/linux/compiler_types.h:58:0,
                 from /home/kisskb/slave/src/include/linux/linkage.h:5,
                 from /home/kisskb/slave/src/include/linux/kernel.h:7,
                 from /home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:14:
/home/kisskb/slave/src/include/linux/compiler-gcc.h:166:2: error: 'struct paca_struct' has no member named 'l1d_flush_sets'
  __builtin_offsetof(a, b)
  ^
/home/kisskb/slave/src/include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof'
 #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2340:3: note: in expansion of macro 'offsetof'
   offsetof(struct paca_struct, name));
   ^
/home/kisskb/slave/src/arch/powerpc/xmon/xmon.c:2381:2: note: in expansion of macro 'DUMP'
  DUMP(p, l1d_flush_sets, "llx");
  ^
  CC      arch/powerpc/xmon/ppc-dis.o
  CC      arch/powerpc/sysdev/msi_bitmap.o
  CC      arch/powerpc/platforms/powernv/opal-dump.o
  AS      arch/powerpc/kernel/ppc_save_regs.o
/home/kisskb/slave/src/scripts/Makefile.build:310: recipe for target 'arch/powerpc/xmon/xmon.o' failed
make[2]: *** [arch/powerpc/xmon/xmon.o] Error 1
make[2]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/sysdev/i8259.o
  CC      arch/powerpc/platforms/powernv/opal-sysparam.o
  CC      arch/powerpc/platforms/powernv/opal-sensor.o
  CC      arch/powerpc/sysdev/scom.o
  CC      arch/powerpc/platforms/powernv/opal-msglog.o
  CC      arch/powerpc/kernel/prom_init.o
  AS      arch/powerpc/kernel/head_64.o
  CC      arch/powerpc/sysdev/xics/xics-common.o
  CC      arch/powerpc/platforms/powernv/opal-hmi.o
  LDS     arch/powerpc/kernel/vmlinux.lds
  CC      arch/powerpc/platforms/powernv/opal-power.o
  AS      arch/powerpc/kernel/fpu.o
  CC      arch/powerpc/platforms/pseries/reconfig.o
  AS      arch/powerpc/kernel/vector.o
  AS      arch/powerpc/kernel/entry_64.o
  AR      arch/powerpc/lib/built-in.o
  CC [M]  arch/powerpc/kernel/rtas_flash.o
/home/kisskb/slave/src/Makefile:1012: recipe for target 'arch/powerpc/xmon' failed
make[1]: *** [arch/powerpc/xmon] Error 2
make[1]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/platforms/powernv/opal-irqchip.o
  CC      arch/powerpc/sysdev/xive/common.o
  CALL    /home/kisskb/slave/src/arch/powerpc/kernel/systbl_chk.sh
  CC      arch/powerpc/platforms/powernv/opal-kmsg.o
  AR      arch/powerpc/mm/built-in.o
  CC      arch/powerpc/sysdev/xive/native.o
  AS      arch/powerpc/kernel/systbl.o
  CC      arch/powerpc/platforms/powernv/opal-powercap.o
  CC      arch/powerpc/platforms/powernv/opal-psr.o
  CC      arch/powerpc/sysdev/xics/icp-native.o
  CC      arch/powerpc/platforms/pseries/of_helpers.o
  LD [M]  arch/powerpc/crypto/sha1-powerpc.o
  CC      arch/powerpc/platforms/powernv/opal-sensor-groups.o
  CC      arch/powerpc/sysdev/xics/icp-hv.o
  CC      arch/powerpc/sysdev/xics/ics-rtas.o
  CC      arch/powerpc/platforms/powernv/smp.o
  LD [M]  arch/powerpc/crypto/crc32c-vpmsum.o
  CC      arch/powerpc/platforms/powernv/subcore.o
  CC      arch/powerpc/sysdev/xive/spapr.o
  AS      arch/powerpc/platforms/powernv/subcore-asm.o
  CC      arch/powerpc/platforms/powernv/pci.o
  CC      arch/powerpc/platforms/powernv/pci-ioda.o
  CC      arch/powerpc/sysdev/xics/ics-opal.o
  CC      arch/powerpc/sysdev/xics/icp-opal.o
  CC      arch/powerpc/platforms/powernv/npu-dma.o
  CC      arch/powerpc/platforms/powernv/pci-cxl.o
  CC      arch/powerpc/platforms/powernv/eeh-powernv.o
  CC      arch/powerpc/platforms/powernv/opal-xscom.o
  CC      arch/powerpc/platforms/pseries/iommu.o
  CC      arch/powerpc/platforms/pseries/setup.o
  CC      arch/powerpc/platforms/powernv/opal-tracepoints.o
  CC      arch/powerpc/platforms/pseries/event_sources.o
  CC      arch/powerpc/platforms/powernv/opal-imc.o
  CC      arch/powerpc/platforms/powernv/vas.o
  CC      arch/powerpc/platforms/pseries/ras.o
  CC      arch/powerpc/platforms/powernv/vas-window.o
  CC      arch/powerpc/platforms/powernv/vas-debug.o
  CC      arch/powerpc/platforms/pseries/firmware.o
  CC      arch/powerpc/platforms/pseries/power.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/platforms/pseries/pci.o
  CC      arch/powerpc/platforms/pseries/pci_dlpar.o
  CC      arch/powerpc/platforms/pseries/smp.o
  CC      arch/powerpc/platforms/pseries/msi.o
  CC      arch/powerpc/platforms/pseries/eeh_pseries.o
  CC      arch/powerpc/platforms/pseries/kexec.o
  CC      arch/powerpc/platforms/pseries/pseries_energy.o
  CC      arch/powerpc/platforms/pseries/hotplug-cpu.o
  CC      arch/powerpc/platforms/pseries/hvconsole.o
  CC      arch/powerpc/platforms/pseries/cmm.o
  CC      arch/powerpc/platforms/pseries/io_event_irq.o
  CC      arch/powerpc/platforms/pseries/dtl.o
  CC      arch/powerpc/platforms/pseries/lparcfg.o
  AR      arch/powerpc/net/built-in.o
  CC      arch/powerpc/platforms/pseries/vio.o
  CC      arch/powerpc/platforms/pseries/suspend.o
  CC [M]  arch/powerpc/platforms/pseries/hvcserver.o
  CC [M]  arch/powerpc/platforms/pseries/scanlog.o
  AR      arch/powerpc/sysdev/xics/built-in.o
  CALL    /home/kisskb/slave/src/arch/powerpc/kernel/prom_init_check.sh
  AR      arch/powerpc/sysdev/xive/built-in.o
  AR      arch/powerpc/sysdev/built-in.o
  AR      arch/powerpc/kernel/built-in.o
  AR      arch/powerpc/platforms/pseries/built-in.o
  AR      arch/powerpc/platforms/powernv/built-in.o
  AR      arch/powerpc/platforms/built-in.o
make[1]: Leaving directory '/home/kisskb/slave/build/powerpc-next_ppc64le_defconfig_ppc64le'
Makefile:146: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_ppc64le_defconfig_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-  ' returned non-zero exit status 2
# rm -rf /home/kisskb/slave/build/powerpc-next_ppc64le_defconfig_ppc64le
# Build took: 0:00:12.948688