Buildresult: powerpc-fixes/powerpc-allnoconfig/powerpc-gcc4.6 built on Oct 21 2015, 22:55

kisskb

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Status:	OK
Date/Time:	Oct 21 2015, 22:55
Duration:	0:00:15.040370
Builder:	ka1
Revision:	powerpc: Revert "Use the POWER8 Micro Partition Prefetch Engine in KVM HV on POWER8" (`23316316c1af0677a041c81f3ad6efb9dc470b33)`
Target:	powerpc-fixes/powerpc-allnoconfig/powerpc-gcc4.6
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	allnoconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 23316316c1af0677a041c81f3ad6efb9dc470b33^{commit} 23316316c1af0677a041c81f3ad6efb9dc470b33 already have revision, skipping fetch # git checkout -q -f -B kisskb 23316316c1af0677a041c81f3ad6efb9dc470b33 # git clean -qxdf # git log -1 commit 23316316c1af0677a041c81f3ad6efb9dc470b33 Author: Paul Mackerras <paulus@samba.org> Date: Wed Oct 21 16:03:14 2015 +1100 powerpc: Revert "Use the POWER8 Micro Partition Prefetch Engine in KVM HV on POWER8" This reverts commit 9678cdaae939 ("Use the POWER8 Micro Partition Prefetch Engine in KVM HV on POWER8") because the original commit had multiple, partly self-cancelling bugs, that could cause occasional memory corruption. In fact the logmpp instruction was incorrectly using register r0 as the source of the buffer address and operation code, and depending on what was in r0, it would either do nothing or corrupt the 64k page pointed to by r0. The logmpp instruction encoding and the operation code definitions could be corrected, but then there is the problem that there is no clearly defined way to know when the hardware has finished writing to the buffer. The original commit attempted to work around this by aborting the write-out before starting the prefetch, but this is ineffective in the case where the virtual core is now executing on a different physical core from the one where the write-out was initiated. These problems plus advice from the hardware designers not to use the function (since the measured performance improvement from using the feature was actually mostly negative), mean that reverting the code is the best option. Fixes: 9678cdaae939 ("Use the POWER8 Micro Partition Prefetch Engine in KVM HV on POWER8") 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 23316316c1af0677a041c81f3ad6efb9dc470b33 # < make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc_powerpc-allnoconfig_powerpc CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- allnoconfig # make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc_powerpc-allnoconfig_powerpc CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- make[1]: Entering directory '/home/kisskb/slave/build/powerpc_powerpc-allnoconfig_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/irq_regs.h WRAP arch/powerpc/include/generated/asm/div64.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 UPD include/config/kernel.release CHK include/generated/uapi/linux/version.h UPD include/generated/uapi/linux/version.h Using /home/kisskb/slave/src as source for kernel CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h HOSTCC scripts/dtc/dtc.o HOSTCC scripts/dtc/flattree.o CC scripts/mod/empty.o HOSTCC scripts/dtc/fstree.o HOSTCC scripts/mod/mk_elfconfig HOSTCC scripts/dtc/data.o 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 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/dtc/dtc-lexer.lex.o HOSTCC scripts/dtc/dtc-parser.tab.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 HOSTLD scripts/mod/modpost 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 LD usr/built-in.o CC init/main.o CHK include/generated/compile.h CC init/do_mounts.o CC init/noinitramfs.o CC init/init_task.o UPD include/generated/compile.h LD arch/powerpc/sysdev/built-in.o CC arch/powerpc/mm/fault.o CC arch/powerpc/mm/mem.o CC init/version.o CC arch/powerpc/mm/pgtable.o CC arch/powerpc/mm/mmap.o AS arch/powerpc/lib/string.o LD arch/powerpc/platforms/built-in.o CC arch/powerpc/mm/init_32.o CC arch/powerpc/lib/alloc.o CC arch/powerpc/mm/pgtable_32.o AS arch/powerpc/lib/crtsavres.o CC arch/powerpc/mm/ppc_mmu_32.o CC arch/powerpc/lib/ppc_ksyms.o CC arch/powerpc/lib/code-patching.o CC arch/powerpc/mm/tlb_hash32.o AS arch/powerpc/mm/hash_low_32.o CC arch/powerpc/lib/feature-fixups.o AS arch/powerpc/lib/div64.o CC arch/powerpc/mm/mmu_context_hash32.o AS arch/powerpc/lib/copy_32.o CC arch/powerpc/kernel/cputable.o CC arch/powerpc/kernel/syscalls.o CC arch/powerpc/kernel/ptrace.o AS arch/powerpc/lib/checksum_32.o CC arch/powerpc/kernel/signal_32.o CC arch/powerpc/kernel/irq.o CC arch/powerpc/kernel/align.o CC arch/powerpc/mm/hugetlbpage.o CC arch/powerpc/kernel/pmc.o CC arch/powerpc/kernel/idle.o LD arch/powerpc/math-emu/built-in.o CPP arch/powerpc/kernel/systbl_chk.i CC arch/powerpc/kernel/vdso.o CC arch/powerpc/kernel/signal.o CC arch/powerpc/kernel/process.o CC arch/powerpc/kernel/time.o CC arch/powerpc/kernel/prom.o CC arch/powerpc/kernel/cacheinfo.o LD arch/powerpc/crypto/built-in.o CC arch/powerpc/kernel/udbg.o CC arch/powerpc/kernel/setup-common.o CC arch/powerpc/kernel/sysfs.o CC arch/powerpc/kernel/traps.o AS arch/powerpc/kernel/misc.o CC arch/powerpc/kernel/io.o CC arch/powerpc/kernel/dma.o AS arch/powerpc/kernel/misc_32.o CC arch/powerpc/kernel/of_platform.o AS arch/powerpc/kernel/idle_6xx.o CC arch/powerpc/kernel/prom_parse.o AS arch/powerpc/kernel/cpu_setup_6xx.o AS arch/powerpc/kernel/l2cr_6xx.o LD arch/powerpc/net/built-in.o AS arch/powerpc/kernel/entry_32.o CC arch/powerpc/kernel/setup_32.o CC arch/powerpc/kernel/pci_32.o CC arch/powerpc/kernel/pci-common.o CC arch/powerpc/kernel/pci_of_scan.o CC arch/powerpc/kernel/iomap.o LDS arch/powerpc/kernel/vmlinux.lds AS arch/powerpc/kernel/head_32.o LDS arch/powerpc/kernel/vdso32/vdso32.lds AS arch/powerpc/kernel/fpu.o CALL /home/kisskb/slave/src/arch/powerpc/kernel/systbl_chk.sh VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o VDSO32A arch/powerpc/kernel/vdso32/datapage.o AS arch/powerpc/kernel/systbl.o VDSO32A arch/powerpc/kernel/vdso32/note.o LD certs/built-in.o LD arch/powerpc/lib/built-in.o VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg LD arch/powerpc/mm/built-in.o OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so AS arch/powerpc/kernel/vdso32/vdso32_wrapper.o LD ipc/built-in.o CC security/commoncap.o CC security/min_addr.o LD arch/powerpc/kernel/vdso32/built-in.o LD crypto/built-in.o LD block/built-in.o CC mm/filemap.o CC kernel/exec_domain.o CC kernel/panic.o CC mm/page-writeback.o CC mm/oom_kill.o CC mm/readahead.o CC kernel/fork.o CC mm/page_alloc.o CC mm/maccess.o CC mm/mempool.o CC mm/truncate.o CC kernel/exit.o CC kernel/cpu.o CC mm/shmem.o CC kernel/sysctl.o CC mm/util.o CC kernel/sysctl_binary.o CC mm/swap.o CC mm/mmzone.o CC mm/vmscan.o CC kernel/capability.o CC kernel/softirq.o CC kernel/user.o CC kernel/ptrace.o CC mm/vmstat.o CC kernel/signal.o CC kernel/resource.o CC kernel/sys.o CC kernel/workqueue.o CC kernel/kmod.o CC mm/backing-dev.o CC kernel/pid.o CC kernel/extable.o CC kernel/task_work.o CC mm/mm_init.o CC mm/mmu_context.o CC kernel/kthread.o CC kernel/params.o CC mm/percpu.o CC mm/slab_common.o CC kernel/sys_ni.o CC fs/open.o LD init/mounts.o CC kernel/nsproxy.o CC mm/compaction.o LD init/built-in.o CC mm/vmacache.o CC kernel/notifier.o CC kernel/ksysfs.o CC mm/interval_tree.o CC mm/list_lru.o LD sound/built-in.o CC kernel/reboot.o CC kernel/cred.o CC mm/workingset.o CC kernel/async.o CC mm/debug.o CC mm/gup.o CC kernel/range.o CC mm/highmem.o CC kernel/smpboot.o CC mm/memory.o CC mm/mincore.o CC mm/mlock.o CC mm/mmap.o LD kernel/livepatch/built-in.o CC mm/mprotect.o LD firmware/built-in.o CC kernel/power/qos.o CC kernel/locking/mutex.o CC kernel/irq/irqdesc.o CC mm/mremap.o CC kernel/printk/printk.o CC mm/msync.o CC kernel/rcu/update.o LD security/built-in.o CC mm/rmap.o CC kernel/up.o CC kernel/dma.o CC mm/vmalloc.o CC kernel/memremap.o CC mm/pagewalk.o CC kernel/elfcore.o CC mm/pgtable-generic.o CC mm/init-mm.o LD net/built-in.o CC mm/nobootmem.o CC fs/file_table.o CC mm/memblock.o CC fs/read_write.o LD arch/powerpc/kernel/built-in.o CC kernel/sched/core.o CC kernel/sched/loadavg.o CC fs/super.o CC kernel/sched/clock.o CC mm/dmapool.o CC mm/slub.o CC kernel/irq/manage.o CC kernel/irq/handle.o LD drivers/auxdisplay/built-in.o LD drivers/amba/built-in.o CC kernel/irq/spurious.o CC kernel/time/time.o CC kernel/locking/semaphore.o CC kernel/locking/rwsem.o CC kernel/rcu/tiny.o CC kernel/time/timer.o CC kernel/time/hrtimer.o CC kernel/time/itimer.o LD drivers/bus/built-in.o LD drivers/block/built-in.o CC fs/char_dev.o LD drivers/cdrom/built-in.o CC fs/stat.o CC kernel/time/posix-timers.o CC kernel/sched/cputime.o CC kernel/sched/idle_task.o LD drivers/firewire/built-in.o LD drivers/clk/built-in.o CC drivers/char/mem.o LD drivers/clocksource/built-in.o LD drivers/gpio/built-in.o CC kernel/sched/rt.o CC kernel/sched/fair.o LD kernel/power/built-in.o CC kernel/sched/deadline.o CC kernel/sched/stop_task.o LD kernel/printk/built-in.o CC drivers/char/random.o CC kernel/locking/percpu-rwsem.o CC fs/exec.o LD drivers/firmware/broadcom/built-in.o LD drivers/hsi/clients/built-in.o CC drivers/base/component.o LD drivers/idle/built-in.o LD drivers/hsi/controllers/built-in.o LD drivers/firmware/built-in.o CC kernel/irq/resend.o LD drivers/i2c/algos/built-in.o LD drivers/gpu/vga/built-in.o CC drivers/irqchip/irqchip.o LD drivers/hsi/built-in.o CC lib/lockref.o CC kernel/locking/rwsem-xadd.o LD drivers/leds/built-in.o LD drivers/lguest/built-in.o LD drivers/gpu/drm/bridge/built-in.o LD drivers/macintosh/built-in.o LD drivers/gpu/drm/panel/built-in.o LD drivers/gpu/drm/i2c/built-in.o LD drivers/i2c/busses/built-in.o CC kernel/sched/completion.o CC kernel/sched/wait.o CC kernel/sched/idle.o LD kernel/rcu/built-in.o CC kernel/time/posix-cpu-timers.o LD drivers/mfd/built-in.o LD drivers/mmc/built-in.o LD drivers/nfc/built-in.o LD drivers/gpu/drm/tilcdc/built-in.o CC kernel/irq/chip.o LD drivers/i2c/muxes/built-in.o CC lib/bcd.o LD drivers/net/built-in.o CC fs/fcntl.o CC fs/namei.o CC fs/pipe.o CC lib/div64.o LD drivers/gpu/drm/built-in.o CC fs/ioctl.o LD drivers/irqchip/built-in.o LD drivers/i2c/built-in.o CC kernel/time/timekeeping.o CC drivers/char/misc.o LD drivers/pwm/built-in.o LD drivers/platform/built-in.o CC kernel/irq/dummychip.o LD drivers/soc/built-in.o LD drivers/misc/cb710/built-in.o CC kernel/irq/devres.o LD drivers/misc/eeprom/built-in.o CC drivers/of/base.o CC lib/sort.o CC drivers/of/device.o CC fs/readdir.o CC drivers/of/fdt.o CC drivers/base/core.o CC drivers/of/platform.o CC fs/select.o CC lib/parser.o LD drivers/gpu/built-in.o LD drivers/misc/lis3lv02d/built-in.o LD drivers/tty/ipwireless/built-in.o LD drivers/usb/host/built-in.o LD drivers/misc/ti-st/built-in.o LD kernel/locking/built-in.o CC kernel/time/ntp.o LD drivers/char/agp/built-in.o CC kernel/irq/irqdomain.o CC drivers/of/fdt_address.o CC drivers/base/bus.o CC drivers/base/dd.o CC drivers/of/address.o LD drivers/media/firewire/built-in.o LD drivers/video/backlight/built-in.o LD drivers/tty/serial/built-in.o LD drivers/misc/mic/bus/built-in.o LD drivers/usb/built-in.o CC lib/halfmd4.o CC drivers/base/syscore.o CC lib/debug_locks.o CC lib/random32.o CC kernel/time/clocksource.o CC kernel/time/jiffies.o CC kernel/time/timer_list.o CC lib/bust_spinlocks.o CC kernel/time/timeconv.o CC drivers/pci/access.o CC fs/dcache.o LD drivers/misc/mic/built-in.o LD drivers/tty/vt/built-in.o CC drivers/video/fbdev/core/fb_notify.o CC kernel/time/timecounter.o CC lib/kasprintf.o CC fs/inode.o CC lib/scatterlist.o LD drivers/misc/built-in.o CC lib/bitmap.o LD drivers/media/common/saa7146/built-in.o LD drivers/media/common/b2c2/built-in.o CC drivers/base/driver.o LD drivers/media/i2c/soc_camera/built-in.o LD drivers/tty/built-in.o CC lib/gcd.o CC lib/lcm.o CC drivers/of/irq.o LD drivers/media/common/siano/built-in.o LD drivers/media/i2c/built-in.o LD mm/built-in.o CC kernel/time/posix-clock.o LD drivers/media/mmc/siano/built-in.o CC drivers/of/of_pci.o CC drivers/of/of_pci_irq.o CC fs/attr.o CC lib/list_sort.o LD drivers/media/common/built-in.o CC lib/uuid.o CC lib/flex_array.o CC drivers/of/of_reserved_mem.o CC lib/iov_iter.o CC drivers/base/class.o CC lib/clz_ctz.o CC kernel/time/alarmtimer.o CC fs/bad_inode.o LD drivers/media/platform/omap/built-in.o LD drivers/media/mmc/built-in.o CC drivers/base/platform.o CC drivers/base/cpu.o CC fs/file.o CC lib/bsearch.o LD kernel/irq/built-in.o CC lib/find_bit.o LD drivers/media/platform/built-in.o LD drivers/media/tuners/built-in.o CC lib/llist.o CC kernel/time/clockevents.o LD drivers/video/fbdev/core/built-in.o CC kernel/time/tick-common.o CC lib/memweight.o LD drivers/media/rc/keymaps/built-in.o LD drivers/char/built-in.o CC fs/namespace.o CC fs/filesystems.o CC lib/kfifo.o CC fs/seq_file.o CC fs/xattr.o CC lib/percpu-refcount.o CC fs/libfs.o LD drivers/media/rc/built-in.o LD kernel/sched/built-in.o CC lib/rhashtable.o CC lib/percpu_ida.o CC drivers/base/firmware.o CC fs/fs-writeback.o CC lib/reciprocal_div.o CC fs/splice.o CC fs/pnode.o CC fs/sync.o CC lib/string_helpers.o CC lib/hexdump.o LD drivers/video/fbdev/omap2/displays-new/built-in.o CC drivers/pci/bus.o CC drivers/base/init.o CC fs/utimes.o CC drivers/base/devres.o CC drivers/base/map.o CC fs/stack.o CC lib/kstrtox.o CC lib/pci_iomap.o LD drivers/video/fbdev/omap2/dss/built-in.o LD drivers/media/pci/b2c2/built-in.o CC fs/fs_struct.o CC drivers/base/attribute_container.o LD drivers/media/usb/b2c2/built-in.o CC lib/iomap_copy.o CC drivers/base/transport_class.o CC drivers/base/topology.o LD drivers/video/fbdev/omap2/built-in.o CC fs/statfs.o LD drivers/media/pci/ddbridge/built-in.o CC lib/devres.o CC lib/hweight.o CC lib/bitrev.o LD drivers/video/fbdev/built-in.o LD drivers/of/built-in.o CC drivers/base/container.o LD drivers/media/usb/dvb-usb-v2/built-in.o LD drivers/media/usb/dvb-usb/built-in.o CC fs/fs_pin.o CC drivers/base/property.o LD drivers/media/pci/dm1105/built-in.o HOSTCC lib/gen_crc32table CC drivers/base/cacheinfo.o LD drivers/video/built-in.o LD drivers/media/usb/s2255/built-in.o CC drivers/base/dma-mapping.o LD drivers/base/power/built-in.o CC lib/syscall.o LD drivers/media/usb/siano/built-in.o CC fs/nsfs.o CC fs/no-block.o LD drivers/media/pci/mantis/built-in.o CC lib/atomic64.o LD fs/devpts/built-in.o LD drivers/media/usb/stkwebcam/built-in.o CC lib/strncpy_from_user.o LD drivers/media/usb/ttusb-dec/built-in.o CC lib/strnlen_user.o LD drivers/media/pci/netup_unidvb/built-in.o LD drivers/media/usb/ttusb-budget/built-in.o CC lib/argv_split.o CC lib/dec_and_lock.o CC lib/cmdline.o LD fs/exofs/built-in.o CC lib/ctype.o CC lib/dump_stack.o CC lib/earlycpio.o LD drivers/media/usb/zr364xx/built-in.o CC fs/binfmt_elf.o CC lib/decompress.o CC lib/extable.o LD fs/quota/built-in.o CC lib/fdt.o LD drivers/media/pci/ngene/built-in.o CC lib/fdt_empty_tree.o LD drivers/media/pci/pluto2/built-in.o CC lib/fdt_ro.o CC lib/fdt_rw.o CC fs/ramfs/inode.o LD drivers/media/pci/pt1/built-in.o CC lib/fdt_strerror.o LD fs/notify/dnotify/built-in.o CC lib/fdt_sw.o CC fs/ramfs/file-mmu.o CC lib/fdt_wip.o LD drivers/media/usb/built-in.o LD drivers/media/pci/saa7146/built-in.o CC lib/flex_proportions.o LD drivers/media/pci/pt3/built-in.o LD drivers/media/pci/ttpci/built-in.o CC lib/idr.o LD drivers/media/pci/smipcie/built-in.o LD fs/notify/inotify/built-in.o LD fs/notify/fanotify/built-in.o LD kernel/time/built-in.o CC drivers/pci/host-bridge.o CC lib/irq_regs.o CC lib/ioremap.o CC lib/int_sqrt.o CC drivers/pci/probe.o CC drivers/pci/remove.o CC lib/klist.o LD kernel/built-in.o CC drivers/pci/pci.o CC drivers/pci/pci-driver.o CC lib/is_single_threaded.o CC lib/kobject.o CC lib/md5.o CC lib/kobject_uevent.o LD drivers/media/pci/built-in.o CC lib/nmi_backtrace.o CC lib/plist.o LD fs/notify/built-in.o CC drivers/pci/search.o CC lib/proportions.o CC lib/radix-tree.o CC drivers/pci/pci-sysfs.o CC drivers/pci/rom.o CC drivers/pci/setup-res.o CC lib/ratelimit.o CC lib/rbtree.o CC drivers/pci/irq.o CC lib/sha1.o CC lib/seq_buf.o CC lib/show_mem.o CC drivers/pci/vpd.o CC lib/string.o CC lib/vsprintf.o CC lib/timerqueue.o CC drivers/pci/setup-bus.o CC drivers/pci/vc.o GEN lib/crc32table.h CC drivers/pci/syscall.o CC drivers/pci/of.o CC lib/crc32.o LD drivers/pci/host/built-in.o LD fs/ramfs/ramfs.o LD fs/ramfs/built-in.o LD drivers/media/built-in.o LD drivers/base/built-in.o LD fs/built-in.o LD lib/built-in.o LD drivers/pci/built-in.o LD drivers/built-in.o AR lib/lib.a 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 LD vmlinux SYSMAP System.map /opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-strip -s -R .comment vmlinux -o arch/powerpc/boot/vmlinux.strip make[1]: Leaving directory '/home/kisskb/slave/build/powerpc_powerpc-allnoconfig_powerpc' Completed OK # rm -rf /home/kisskb/slave/build/powerpc_powerpc-allnoconfig_powerpc # Build took: 0:00:15.040370

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