hwclock failure in x86.git - Kernel

This is a discussion on hwclock failure in x86.git - Kernel ; My first time building and booting the mm branch of x86.git was pretty successful. The only error I noticed was the following in my dmesg: hwclock[622] general protection ip:804b226 sp:bff43e30 error:0 I'm not sure exactly how to debug this. I ...

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Thread: hwclock failure in x86.git

  1. hwclock failure in x86.git


    My first time building and booting the mm branch of x86.git was pretty
    successful. The only error I noticed was the following in my dmesg:


    hwclock[622] general protection ip:804b226 sp:bff43e30 error:0


    I'm not sure exactly how to debug this. I could bisect, but there seems
    to be some useful debug information in there, so there might be
    something better to try first.

    On a side note, if bisection is the best option, I have a cloned git
    repository of Linus' git, and I added the x86.git mm branch as a remote
    tracking branch. Are there any special rules I need to follow to bisect
    that, or would I still start with:

    git bisect start
    git bisect bad
    git bisect good v2.6.24-rc7

    ??


    #
    # Automatically generated make config: don't edit
    # Linux kernel version: 2.6.24-rc7
    # Thu Jan 10 19:03:13 2008
    #
    # CONFIG_64BIT is not set
    CONFIG_X86_32=y
    # CONFIG_X86_64 is not set
    CONFIG_X86=y
    # CONFIG_GENERIC_LOCKBREAK is not set
    CONFIG_GENERIC_TIME=y
    CONFIG_GENERIC_CMOS_UPDATE=y
    CONFIG_CLOCKSOURCE_WATCHDOG=y
    CONFIG_GENERIC_CLOCKEVENTS=y
    CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
    CONFIG_LOCKDEP_SUPPORT=y
    CONFIG_STACKTRACE_SUPPORT=y
    CONFIG_SEMAPHORE_SLEEPERS=y
    CONFIG_MMU=y
    CONFIG_ZONE_DMA=y
    CONFIG_QUICKLIST=y
    CONFIG_GENERIC_ISA_DMA=y
    CONFIG_GENERIC_IOMAP=y
    CONFIG_GENERIC_BUG=y
    # CONFIG_GENERIC_GPIO is not set
    CONFIG_GENERIC_HWEIGHT=y
    CONFIG_ARCH_MAY_HAVE_PC_FDC=y
    CONFIG_DMI=y
    # CONFIG_RWSEM_GENERIC_SPINLOCK is not set
    CONFIG_RWSEM_XCHGADD_ALGORITHM=y
    # CONFIG_ARCH_HAS_ILOG2_U32 is not set
    # CONFIG_ARCH_HAS_ILOG2_U64 is not set
    CONFIG_GENERIC_CALIBRATE_DELAY=y
    # CONFIG_GENERIC_TIME_VSYSCALL is not set
    # CONFIG_ARCH_SETS_UP_PER_CPU_AREA is not set
    CONFIG_ARCH_SUPPORTS_OPROFILE=y
    # CONFIG_ZONE_DMA32 is not set
    CONFIG_ARCH_POPULATES_NODE_MAP=y
    # CONFIG_AUDIT_ARCH is not set
    CONFIG_GENERIC_HARDIRQS=y
    CONFIG_GENERIC_IRQ_PROBE=y
    CONFIG_PM_CPUINIT=y
    CONFIG_X86_BIOS_REBOOT=y
    CONFIG_KTIME_SCALAR=y
    CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

    #
    # General setup
    #
    CONFIG_EXPERIMENTAL=y
    CONFIG_BROKEN_ON_SMP=y
    CONFIG_LOCK_KERNEL=y
    CONFIG_INIT_ENV_ARG_LIMIT=32
    CONFIG_LOCALVERSION=""
    CONFIG_LOCALVERSION_AUTO=y
    CONFIG_SWAP=y
    # CONFIG_SYSVIPC is not set
    # CONFIG_POSIX_MQUEUE is not set
    # CONFIG_BSD_PROCESS_ACCT is not set
    # CONFIG_TASKSTATS is not set
    # CONFIG_USER_NS is not set
    # CONFIG_PID_NS is not set
    # CONFIG_AUDIT is not set
    CONFIG_IKCONFIG=y
    CONFIG_IKCONFIG_PROC=y
    CONFIG_LOG_BUF_SHIFT=17
    # CONFIG_CGROUPS is not set
    CONFIG_FAIR_GROUP_SCHED=y
    CONFIG_FAIR_USER_SCHED=y
    # CONFIG_FAIR_CGROUP_SCHED is not set
    # CONFIG_SYSFS_DEPRECATED is not set
    # CONFIG_RELAY is not set
    # CONFIG_BLK_DEV_INITRD is not set
    CONFIG_CC_OPTIMIZE_FOR_SIZE=y
    CONFIG_SYSCTL=y
    # CONFIG_EMBEDDED is not set
    CONFIG_UID16=y
    CONFIG_SYSCTL_SYSCALL=y
    CONFIG_KALLSYMS=y
    CONFIG_KALLSYMS_ALL=y
    # CONFIG_KALLSYMS_EXTRA_PASS is not set
    CONFIG_HOTPLUG=y
    CONFIG_PRINTK=y
    CONFIG_BUG=y
    CONFIG_ELF_CORE=y
    CONFIG_BASE_FULL=y
    CONFIG_FUTEX=y
    CONFIG_ANON_INODES=y
    CONFIG_EPOLL=y
    CONFIG_SIGNALFD=y
    CONFIG_EVENTFD=y
    CONFIG_SHMEM=y
    CONFIG_VM_EVENT_COUNTERS=y
    CONFIG_SLUB_DEBUG=y
    # CONFIG_SLAB is not set
    CONFIG_SLUB=y
    # CONFIG_SLOB is not set
    CONFIG_SLABINFO=y
    CONFIG_RT_MUTEXES=y
    # CONFIG_TINY_SHMEM is not set
    CONFIG_BASE_SMALL=0
    # CONFIG_MODULES is not set
    CONFIG_BLOCK=y
    # CONFIG_LBD is not set
    # CONFIG_BLK_DEV_IO_TRACE is not set
    # CONFIG_LSF is not set
    CONFIG_BLK_DEV_BSG=y

    #
    # IO Schedulers
    #
    CONFIG_IOSCHED_NOOP=y
    # CONFIG_IOSCHED_AS is not set
    # CONFIG_IOSCHED_DEADLINE is not set
    CONFIG_IOSCHED_CFQ=y
    # CONFIG_DEFAULT_AS is not set
    # CONFIG_DEFAULT_DEADLINE is not set
    CONFIG_DEFAULT_CFQ=y
    # CONFIG_DEFAULT_NOOP is not set
    CONFIG_DEFAULT_IOSCHED="cfq"

    #
    # Processor type and features
    #
    CONFIG_TICK_ONESHOT=y
    CONFIG_NO_HZ=y
    CONFIG_HIGH_RES_TIMERS=y
    CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
    # CONFIG_SMP is not set
    CONFIG_X86_PC=y
    # CONFIG_X86_ELAN is not set
    # CONFIG_X86_VOYAGER is not set
    # CONFIG_X86_NUMAQ is not set
    # CONFIG_X86_SUMMIT is not set
    # CONFIG_X86_BIGSMP is not set
    # CONFIG_X86_VISWS is not set
    # CONFIG_X86_GENERICARCH is not set
    # CONFIG_X86_ES7000 is not set
    # CONFIG_X86_RDC321X is not set
    # CONFIG_X86_VSMP is not set
    # CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER is not set
    # CONFIG_PARAVIRT_GUEST is not set
    # CONFIG_M386 is not set
    # CONFIG_M486 is not set
    # CONFIG_M586 is not set
    # CONFIG_M586TSC is not set
    # CONFIG_M586MMX is not set
    # CONFIG_M686 is not set
    # CONFIG_MPENTIUMII is not set
    # CONFIG_MPENTIUMIII is not set
    # CONFIG_MPENTIUMM is not set
    # CONFIG_MPENTIUM4 is not set
    # CONFIG_MK6 is not set
    # CONFIG_MK7 is not set
    CONFIG_MK8=y
    # CONFIG_MCRUSOE is not set
    # CONFIG_MEFFICEON is not set
    # CONFIG_MWINCHIPC6 is not set
    # CONFIG_MWINCHIP2 is not set
    # CONFIG_MWINCHIP3D is not set
    # CONFIG_MGEODEGX1 is not set
    # CONFIG_MGEODE_LX is not set
    # CONFIG_MCYRIXIII is not set
    # CONFIG_MVIAC3_2 is not set
    # CONFIG_MVIAC7 is not set
    # CONFIG_MPSC is not set
    # CONFIG_MCORE2 is not set
    # CONFIG_GENERIC_CPU is not set
    # CONFIG_X86_GENERIC is not set
    CONFIG_X86_CMPXCHG=y
    CONFIG_X86_L1_CACHE_SHIFT=6
    CONFIG_X86_XADD=y
    CONFIG_X86_WP_WORKS_OK=y
    CONFIG_X86_INVLPG=y
    CONFIG_X86_BSWAP=y
    CONFIG_X86_POPAD_OK=y
    CONFIG_X86_GOOD_APIC=y
    CONFIG_X86_INTEL_USERCOPY=y
    CONFIG_X86_USE_PPRO_CHECKSUM=y
    CONFIG_X86_TSC=y
    CONFIG_X86_MINIMUM_CPU_FAMILY=4
    CONFIG_X86_DEBUGCTLMSR=y
    CONFIG_HPET_TIMER=y
    # CONFIG_PREEMPT_NONE is not set
    # CONFIG_PREEMPT_VOLUNTARY is not set
    CONFIG_PREEMPT=y
    CONFIG_PREEMPT_BKL=y
    CONFIG_X86_UP_APIC=y
    CONFIG_X86_UP_IOAPIC=y
    CONFIG_X86_LOCAL_APIC=y
    CONFIG_X86_IO_APIC=y
    CONFIG_X86_MCE=y
    CONFIG_X86_MCE_NONFATAL=y
    # CONFIG_X86_MCE_P4THERMAL is not set
    CONFIG_VM86=y
    # CONFIG_TOSHIBA is not set
    # CONFIG_I8K is not set
    # CONFIG_X86_REBOOTFIXUPS is not set
    # CONFIG_MICROCODE is not set
    CONFIG_X86_MSR=y
    CONFIG_X86_CPUID=y
    # CONFIG_NOHIGHMEM is not set
    CONFIG_HIGHMEM4G=y
    # CONFIG_HIGHMEM64G is not set
    CONFIG_PAGE_OFFSET=0xC0000000
    CONFIG_HIGHMEM=y
    CONFIG_ARCH_FLATMEM_ENABLE=y
    CONFIG_ARCH_SPARSEMEM_ENABLE=y
    CONFIG_ARCH_SELECT_MEMORY_MODEL=y
    CONFIG_SELECT_MEMORY_MODEL=y
    CONFIG_FLATMEM_MANUAL=y
    # CONFIG_DISCONTIGMEM_MANUAL is not set
    # CONFIG_SPARSEMEM_MANUAL is not set
    CONFIG_FLATMEM=y
    CONFIG_FLAT_NODE_MEM_MAP=y
    CONFIG_SPARSEMEM_STATIC=y
    # CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
    CONFIG_SPLIT_PTLOCK_CPUS=4
    CONFIG_RESOURCES_64BIT=y
    CONFIG_ZONE_DMA_FLAG=1
    CONFIG_BOUNCE=y
    CONFIG_NR_QUICK=1
    CONFIG_VIRT_TO_BUS=y
    # CONFIG_HIGHPTE is not set
    # CONFIG_MATH_EMULATION is not set
    CONFIG_MTRR=y
    # CONFIG_EFI is not set
    # CONFIG_SECCOMP is not set
    # CONFIG_HZ_100 is not set
    # CONFIG_HZ_250 is not set
    # CONFIG_HZ_300 is not set
    CONFIG_HZ_1000=y
    CONFIG_HZ=1000
    # CONFIG_KEXEC is not set
    # CONFIG_CRASH_DUMP is not set
    CONFIG_PHYSICAL_START=0x100000
    # CONFIG_RELOCATABLE is not set
    CONFIG_PHYSICAL_ALIGN=0x100000
    # CONFIG_COMPAT_VDSO is not set
    CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

    #
    # Power management options
    #
    CONFIG_PM=y
    # CONFIG_PM_LEGACY is not set
    # CONFIG_PM_DEBUG is not set
    CONFIG_PM_SLEEP=y
    CONFIG_SUSPEND_UP_POSSIBLE=y
    CONFIG_SUSPEND=y
    CONFIG_HIBERNATION_UP_POSSIBLE=y
    # CONFIG_HIBERNATION is not set
    CONFIG_ACPI=y
    CONFIG_ACPI_SLEEP=y
    CONFIG_ACPI_PROCFS=y
    # CONFIG_ACPI_PROCFS_POWER is not set
    CONFIG_ACPI_PROC_EVENT=y
    # CONFIG_ACPI_AC is not set
    # CONFIG_ACPI_BATTERY is not set
    CONFIG_ACPI_BUTTON=y
    CONFIG_ACPI_FAN=y
    # CONFIG_ACPI_DOCK is not set
    CONFIG_ACPI_PROCESSOR=y
    CONFIG_ACPI_THERMAL=y
    # CONFIG_ACPI_ASUS is not set
    # CONFIG_ACPI_TOSHIBA is not set
    CONFIG_ACPI_BLACKLIST_YEAR=2000
    # CONFIG_ACPI_DEBUG is not set
    CONFIG_ACPI_EC=y
    CONFIG_ACPI_POWER=y
    CONFIG_ACPI_SYSTEM=y
    CONFIG_X86_PM_TIMER=y
    # CONFIG_ACPI_CONTAINER is not set
    # CONFIG_ACPI_SBS is not set
    # CONFIG_APM is not set

    #
    # CPU Frequency scaling
    #
    CONFIG_CPU_FREQ=y
    CONFIG_CPU_FREQ_TABLE=y
    # CONFIG_CPU_FREQ_DEBUG is not set
    # CONFIG_CPU_FREQ_STAT is not set
    # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
    # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
    # CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
    CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
    CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
    # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
    # CONFIG_CPU_FREQ_GOV_USERSPACE is not set
    # CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
    CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y

    #
    # CPUFreq processor drivers
    #
    # CONFIG_X86_ACPI_CPUFREQ is not set
    # CONFIG_X86_POWERNOW_K6 is not set
    # CONFIG_X86_POWERNOW_K7 is not set
    CONFIG_X86_POWERNOW_K8=y
    CONFIG_X86_POWERNOW_K8_ACPI=y
    # CONFIG_X86_GX_SUSPMOD is not set
    # CONFIG_X86_SPEEDSTEP_CENTRINO is not set
    # CONFIG_X86_SPEEDSTEP_ICH is not set
    # CONFIG_X86_SPEEDSTEP_SMI is not set
    # CONFIG_X86_P4_CLOCKMOD is not set
    # CONFIG_X86_CPUFREQ_NFORCE2 is not set
    # CONFIG_X86_LONGRUN is not set
    # CONFIG_X86_LONGHAUL is not set
    # CONFIG_X86_E_POWERSAVER is not set

    #
    # shared options
    #
    # CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
    # CONFIG_X86_SPEEDSTEP_LIB is not set
    # CONFIG_CPU_IDLE is not set

    #
    # Bus options (PCI etc.)
    #
    CONFIG_PCI=y
    # CONFIG_PCI_GOBIOS is not set
    # CONFIG_PCI_GOMMCONFIG is not set
    # CONFIG_PCI_GODIRECT is not set
    CONFIG_PCI_GOANY=y
    CONFIG_PCI_BIOS=y
    CONFIG_PCI_DIRECT=y
    CONFIG_PCI_MMCONFIG=y
    CONFIG_PCI_DOMAINS=y
    # CONFIG_PCIEPORTBUS is not set
    CONFIG_ARCH_SUPPORTS_MSI=y
    # CONFIG_PCI_MSI is not set
    # CONFIG_PCI_LEGACY is not set
    # CONFIG_PCI_DEBUG is not set
    CONFIG_HT_IRQ=y
    CONFIG_ISA_DMA_API=y
    # CONFIG_ISA is not set
    # CONFIG_MCA is not set
    # CONFIG_SCx200 is not set
    CONFIG_K8_NB=y
    # CONFIG_PCCARD is not set
    # CONFIG_HOTPLUG_PCI is not set

    #
    # Executable file formats / Emulations
    #
    CONFIG_BINFMT_ELF=y
    # CONFIG_BINFMT_AOUT is not set
    # CONFIG_BINFMT_MISC is not set

    #
    # Networking
    #
    CONFIG_NET=y

    #
    # Networking options
    #
    # CONFIG_PACKET is not set
    CONFIG_UNIX=y
    # CONFIG_NET_KEY is not set
    CONFIG_INET=y
    # CONFIG_IP_MULTICAST is not set
    # CONFIG_IP_ADVANCED_ROUTER is not set
    CONFIG_IP_FIB_HASH=y
    # CONFIG_IP_PNP is not set
    # CONFIG_NET_IPIP is not set
    CONFIG_NET_IPGRE=y
    # CONFIG_ARPD is not set
    # CONFIG_SYN_COOKIES is not set
    # CONFIG_INET_AH is not set
    # CONFIG_INET_ESP is not set
    # CONFIG_INET_IPCOMP is not set
    # CONFIG_INET_XFRM_TUNNEL is not set
    # CONFIG_INET_TUNNEL is not set
    # CONFIG_INET_XFRM_MODE_TRANSPORT is not set
    # CONFIG_INET_XFRM_MODE_TUNNEL is not set
    # CONFIG_INET_XFRM_MODE_BEET is not set
    CONFIG_INET_LRO=y
    # CONFIG_INET_DIAG is not set
    # CONFIG_TCP_CONG_ADVANCED is not set
    CONFIG_TCP_CONG_CUBIC=y
    CONFIG_DEFAULT_TCP_CONG="cubic"
    # CONFIG_TCP_MD5SIG is not set
    # CONFIG_IPV6 is not set
    # CONFIG_INET6_XFRM_TUNNEL is not set
    # CONFIG_INET6_TUNNEL is not set
    # CONFIG_NETWORK_SECMARK is not set
    # CONFIG_NETFILTER is not set
    # CONFIG_IP_DCCP is not set
    # CONFIG_IP_SCTP is not set
    # CONFIG_TIPC is not set
    # CONFIG_ATM is not set
    # CONFIG_BRIDGE is not set
    # CONFIG_VLAN_8021Q is not set
    # CONFIG_DECNET is not set
    # CONFIG_LLC2 is not set
    # CONFIG_IPX is not set
    # CONFIG_ATALK is not set
    # CONFIG_X25 is not set
    # CONFIG_LAPB is not set
    # CONFIG_ECONET is not set
    # CONFIG_WAN_ROUTER is not set
    # CONFIG_NET_SCHED is not set

    #
    # Network testing
    #
    # CONFIG_NET_PKTGEN is not set
    # CONFIG_HAMRADIO is not set
    # CONFIG_IRDA is not set
    # CONFIG_BT is not set
    # CONFIG_AF_RXRPC is not set

    #
    # Wireless
    #
    # CONFIG_CFG80211 is not set
    # CONFIG_WIRELESS_EXT is not set
    # CONFIG_MAC80211 is not set
    # CONFIG_IEEE80211 is not set
    # CONFIG_RFKILL is not set
    # CONFIG_NET_9P is not set

    #
    # Device Drivers
    #

    #
    # Generic Driver Options
    #
    CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
    CONFIG_STANDALONE=y
    CONFIG_PREVENT_FIRMWARE_BUILD=y
    # CONFIG_FW_LOADER is not set
    # CONFIG_DEBUG_DRIVER is not set
    # CONFIG_DEBUG_DEVRES is not set
    # CONFIG_SYS_HYPERVISOR is not set
    # CONFIG_CONNECTOR is not set
    # CONFIG_MTD is not set
    # CONFIG_PARPORT is not set
    CONFIG_PNP=y
    # CONFIG_PNP_DEBUG is not set

    #
    # Protocols
    #
    CONFIG_PNPACPI=y
    CONFIG_BLK_DEV=y
    # CONFIG_BLK_DEV_FD is not set
    # CONFIG_BLK_CPQ_DA is not set
    # CONFIG_BLK_CPQ_CISS_DA is not set
    # CONFIG_BLK_DEV_DAC960 is not set
    # CONFIG_BLK_DEV_UMEM is not set
    # CONFIG_BLK_DEV_COW_COMMON is not set
    # CONFIG_BLK_DEV_LOOP is not set
    # CONFIG_BLK_DEV_NBD is not set
    # CONFIG_BLK_DEV_SX8 is not set
    # CONFIG_BLK_DEV_UB is not set
    # CONFIG_BLK_DEV_RAM is not set
    CONFIG_CDROM_PKTCDVD=y
    CONFIG_CDROM_PKTCDVD_BUFFERS=8
    # CONFIG_CDROM_PKTCDVD_WCACHE is not set
    # CONFIG_ATA_OVER_ETH is not set
    # CONFIG_MISC_DEVICES is not set
    # CONFIG_IDE is not set

    #
    # SCSI device support
    #
    # CONFIG_RAID_ATTRS is not set
    CONFIG_SCSI=y
    CONFIG_SCSI_DMA=y
    CONFIG_SCSI_TGT=y
    # CONFIG_SCSI_NETLINK is not set
    # CONFIG_SCSI_PROC_FS is not set

    #
    # SCSI support type (disk, tape, CD-ROM)
    #
    CONFIG_BLK_DEV_SD=y
    # CONFIG_CHR_DEV_ST is not set
    # CONFIG_CHR_DEV_OSST is not set
    CONFIG_BLK_DEV_SR=y
    # CONFIG_BLK_DEV_SR_VENDOR is not set
    CONFIG_CHR_DEV_SG=y
    # CONFIG_CHR_DEV_SCH is not set

    #
    # Some SCSI devices (e.g. CD jukebox) support multiple LUNs
    #
    # CONFIG_SCSI_MULTI_LUN is not set
    # CONFIG_SCSI_CONSTANTS is not set
    # CONFIG_SCSI_LOGGING is not set
    CONFIG_SCSI_SCAN_ASYNC=y

    #
    # SCSI Transports
    #
    # CONFIG_SCSI_SPI_ATTRS is not set
    # CONFIG_SCSI_FC_ATTRS is not set
    # CONFIG_SCSI_ISCSI_ATTRS is not set
    # CONFIG_SCSI_SAS_ATTRS is not set
    # CONFIG_SCSI_SAS_LIBSAS is not set
    # CONFIG_SCSI_SRP_ATTRS is not set
    # CONFIG_SCSI_LOWLEVEL is not set
    CONFIG_ATA=y
    # CONFIG_ATA_NONSTANDARD is not set
    CONFIG_ATA_ACPI=y
    # CONFIG_SATA_AHCI is not set
    # CONFIG_SATA_SVW is not set
    # CONFIG_ATA_PIIX is not set
    # CONFIG_SATA_MV is not set
    # CONFIG_SATA_NV is not set
    # CONFIG_PDC_ADMA is not set
    # CONFIG_SATA_QSTOR is not set
    # CONFIG_SATA_PROMISE is not set
    # CONFIG_SATA_SX4 is not set
    CONFIG_SATA_SIL=y
    # CONFIG_SATA_SIL24 is not set
    # CONFIG_SATA_SIS is not set
    # CONFIG_SATA_ULI is not set
    CONFIG_SATA_VIA=y
    # CONFIG_SATA_VITESSE is not set
    # CONFIG_SATA_INIC162X is not set
    # CONFIG_PATA_ACPI is not set
    # CONFIG_PATA_ALI is not set
    # CONFIG_PATA_AMD is not set
    # CONFIG_PATA_ARTOP is not set
    # CONFIG_PATA_ATIIXP is not set
    # CONFIG_PATA_CMD640_PCI is not set
    # CONFIG_PATA_CMD64X is not set
    # CONFIG_PATA_CS5520 is not set
    # CONFIG_PATA_CS5530 is not set
    # CONFIG_PATA_CS5535 is not set
    # CONFIG_PATA_CS5536 is not set
    # CONFIG_PATA_CYPRESS is not set
    # CONFIG_PATA_EFAR is not set
    # CONFIG_ATA_GENERIC is not set
    # CONFIG_PATA_HPT366 is not set
    # CONFIG_PATA_HPT37X is not set
    # CONFIG_PATA_HPT3X2N is not set
    # CONFIG_PATA_HPT3X3 is not set
    # CONFIG_PATA_IT821X is not set
    # CONFIG_PATA_IT8213 is not set
    # CONFIG_PATA_JMICRON is not set
    # CONFIG_PATA_TRIFLEX is not set
    # CONFIG_PATA_MARVELL is not set
    # CONFIG_PATA_MPIIX is not set
    # CONFIG_PATA_OLDPIIX is not set
    # CONFIG_PATA_NETCELL is not set
    # CONFIG_PATA_NS87410 is not set
    # CONFIG_PATA_NS87415 is not set
    # CONFIG_PATA_OPTI is not set
    # CONFIG_PATA_OPTIDMA is not set
    # CONFIG_PATA_PDC_OLD is not set
    # CONFIG_PATA_RADISYS is not set
    # CONFIG_PATA_RZ1000 is not set
    # CONFIG_PATA_SC1200 is not set
    # CONFIG_PATA_SERVERWORKS is not set
    # CONFIG_PATA_PDC2027X is not set
    # CONFIG_PATA_SIL680 is not set
    # CONFIG_PATA_SIS is not set
    CONFIG_PATA_VIA=y
    # CONFIG_PATA_WINBOND is not set
    # CONFIG_MD is not set
    # CONFIG_FUSION is not set

    #
    # IEEE 1394 (FireWire) support
    #
    CONFIG_FIREWIRE=y
    CONFIG_FIREWIRE_OHCI=y
    # CONFIG_FIREWIRE_SBP2 is not set
    # CONFIG_IEEE1394 is not set
    # CONFIG_I2O is not set
    # CONFIG_MACINTOSH_DRIVERS is not set
    CONFIG_NETDEVICES=y
    # CONFIG_NETDEVICES_MULTIQUEUE is not set
    # CONFIG_DUMMY is not set
    # CONFIG_BONDING is not set
    # CONFIG_MACVLAN is not set
    # CONFIG_EQUALIZER is not set
    # CONFIG_TUN is not set
    # CONFIG_VETH is not set
    # CONFIG_NET_SB1000 is not set
    # CONFIG_IP1000 is not set
    # CONFIG_ARCNET is not set
    # CONFIG_PHYLIB is not set
    CONFIG_NET_ETHERNET=y
    CONFIG_MII=y
    # CONFIG_HAPPYMEAL is not set
    # CONFIG_SUNGEM is not set
    # CONFIG_CASSINI is not set
    # CONFIG_NET_VENDOR_3COM is not set
    # CONFIG_NET_TULIP is not set
    # CONFIG_HP100 is not set
    # CONFIG_IBM_NEW_EMAC_ZMII is not set
    # CONFIG_IBM_NEW_EMAC_RGMII is not set
    # CONFIG_IBM_NEW_EMAC_TAH is not set
    # CONFIG_IBM_NEW_EMAC_EMAC4 is not set
    CONFIG_NET_PCI=y
    # CONFIG_PCNET32 is not set
    # CONFIG_AMD8111_ETH is not set
    # CONFIG_ADAPTEC_STARFIRE is not set
    # CONFIG_B44 is not set
    # CONFIG_FORCEDETH is not set
    # CONFIG_EEPRO100 is not set
    # CONFIG_E100 is not set
    # CONFIG_FEALNX is not set
    # CONFIG_NATSEMI is not set
    # CONFIG_NE2K_PCI is not set
    # CONFIG_8139CP is not set
    # CONFIG_8139TOO is not set
    # CONFIG_SIS900 is not set
    # CONFIG_EPIC100 is not set
    # CONFIG_SUNDANCE is not set
    # CONFIG_TLAN is not set
    CONFIG_VIA_RHINE=y
    CONFIG_VIA_RHINE_MMIO=y
    # CONFIG_VIA_RHINE_NAPI is not set
    # CONFIG_SC92031 is not set
    CONFIG_NETDEV_1000=y
    # CONFIG_ACENIC is not set
    # CONFIG_DL2K is not set
    # CONFIG_E1000 is not set
    # CONFIG_E1000E is not set
    # CONFIG_NS83820 is not set
    # CONFIG_HAMACHI is not set
    # CONFIG_YELLOWFIN is not set
    # CONFIG_R8169 is not set
    # CONFIG_SIS190 is not set
    # CONFIG_SKGE is not set
    # CONFIG_SKY2 is not set
    # CONFIG_SK98LIN is not set
    CONFIG_VIA_VELOCITY=y
    # CONFIG_TIGON3 is not set
    # CONFIG_BNX2 is not set
    # CONFIG_QLA3XXX is not set
    # CONFIG_ATL1 is not set
    # CONFIG_NETDEV_10000 is not set
    # CONFIG_TR is not set

    #
    # Wireless LAN
    #
    # CONFIG_WLAN_PRE80211 is not set
    # CONFIG_WLAN_80211 is not set

    #
    # USB Network Adapters
    #
    # CONFIG_USB_CATC is not set
    # CONFIG_USB_KAWETH is not set
    # CONFIG_USB_PEGASUS is not set
    # CONFIG_USB_RTL8150 is not set
    # CONFIG_USB_USBNET is not set
    # CONFIG_WAN is not set
    # CONFIG_FDDI is not set
    # CONFIG_HIPPI is not set
    CONFIG_PPP=y
    # CONFIG_PPP_MULTILINK is not set
    CONFIG_PPP_FILTER=y
    CONFIG_PPP_ASYNC=y
    CONFIG_PPP_SYNC_TTY=y
    # CONFIG_PPP_DEFLATE is not set
    # CONFIG_PPP_BSDCOMP is not set
    CONFIG_PPP_MPPE=y
    # CONFIG_PPPOE is not set
    # CONFIG_PPPOL2TP is not set
    # CONFIG_SLIP is not set
    CONFIG_SLHC=y
    # CONFIG_NET_FC is not set
    # CONFIG_SHAPER is not set
    # CONFIG_NETCONSOLE is not set
    # CONFIG_NETPOLL is not set
    # CONFIG_NET_POLL_CONTROLLER is not set
    # CONFIG_ISDN is not set
    # CONFIG_PHONE is not set

    #
    # Input device support
    #
    CONFIG_INPUT=y
    # CONFIG_INPUT_FF_MEMLESS is not set
    # CONFIG_INPUT_POLLDEV is not set

    #
    # Userland interfaces
    #
    CONFIG_INPUT_MOUSEDEV=y
    CONFIG_INPUT_MOUSEDEV_PSAUX=y
    CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
    CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
    # CONFIG_INPUT_JOYDEV is not set
    CONFIG_INPUT_EVDEV=y
    # CONFIG_INPUT_EVBUG is not set

    #
    # Input Device Drivers
    #
    CONFIG_INPUT_KEYBOARD=y
    CONFIG_KEYBOARD_ATKBD=y
    # CONFIG_KEYBOARD_SUNKBD is not set
    # CONFIG_KEYBOARD_LKKBD is not set
    # CONFIG_KEYBOARD_XTKBD is not set
    # CONFIG_KEYBOARD_NEWTON is not set
    # CONFIG_KEYBOARD_STOWAWAY is not set
    # CONFIG_INPUT_MOUSE is not set
    # CONFIG_INPUT_JOYSTICK is not set
    # CONFIG_INPUT_TABLET is not set
    # CONFIG_INPUT_TOUCHSCREEN is not set
    # CONFIG_INPUT_MISC is not set

    #
    # Hardware I/O ports
    #
    CONFIG_SERIO=y
    CONFIG_SERIO_I8042=y
    # CONFIG_SERIO_SERPORT is not set
    # CONFIG_SERIO_CT82C710 is not set
    # CONFIG_SERIO_PCIPS2 is not set
    CONFIG_SERIO_LIBPS2=y
    # CONFIG_SERIO_RAW is not set
    # CONFIG_GAMEPORT is not set

    #
    # Character devices
    #
    CONFIG_VT=y
    CONFIG_VT_CONSOLE=y
    CONFIG_HW_CONSOLE=y
    # CONFIG_VT_HW_CONSOLE_BINDING is not set
    # CONFIG_SERIAL_NONSTANDARD is not set

    #
    # Serial drivers
    #
    # CONFIG_SERIAL_8250 is not set
    CONFIG_FIX_EARLYCON_MEM=y

    #
    # Non-8250 serial port support
    #
    # CONFIG_SERIAL_JSM is not set
    CONFIG_UNIX98_PTYS=y
    # CONFIG_LEGACY_PTYS is not set
    # CONFIG_IPMI_HANDLER is not set
    CONFIG_HW_RANDOM=y
    # CONFIG_HW_RANDOM_INTEL is not set
    # CONFIG_HW_RANDOM_AMD is not set
    # CONFIG_HW_RANDOM_GEODE is not set
    CONFIG_HW_RANDOM_VIA=y
    # CONFIG_NVRAM is not set
    # CONFIG_RTC is not set
    # CONFIG_GEN_RTC is not set
    # CONFIG_R3964 is not set
    # CONFIG_APPLICOM is not set
    # CONFIG_SONYPI is not set
    # CONFIG_MWAVE is not set
    # CONFIG_PC8736x_GPIO is not set
    # CONFIG_NSC_GPIO is not set
    # CONFIG_CS5535_GPIO is not set
    # CONFIG_RAW_DRIVER is not set
    CONFIG_HPET=y
    # CONFIG_HPET_RTC_IRQ is not set
    CONFIG_HPET_MMAP=y
    CONFIG_HANGCHECK_TIMER=y
    # CONFIG_TCG_TPM is not set
    # CONFIG_TELCLOCK is not set
    CONFIG_DEVPORT=y
    CONFIG_I2C=y
    CONFIG_I2C_BOARDINFO=y
    CONFIG_I2C_CHARDEV=y

    #
    # I2C Algorithms
    #
    # CONFIG_I2C_ALGOBIT is not set
    # CONFIG_I2C_ALGOPCF is not set
    # CONFIG_I2C_ALGOPCA is not set

    #
    # I2C Hardware Bus support
    #
    # CONFIG_I2C_ALI1535 is not set
    # CONFIG_I2C_ALI1563 is not set
    # CONFIG_I2C_ALI15X3 is not set
    # CONFIG_I2C_AMD756 is not set
    # CONFIG_I2C_AMD8111 is not set
    # CONFIG_I2C_I801 is not set
    # CONFIG_I2C_I810 is not set
    # CONFIG_I2C_PIIX4 is not set
    # CONFIG_I2C_NFORCE2 is not set
    # CONFIG_I2C_OCORES is not set
    # CONFIG_I2C_PARPORT_LIGHT is not set
    # CONFIG_I2C_PROSAVAGE is not set
    # CONFIG_I2C_SAVAGE4 is not set
    # CONFIG_I2C_SIMTEC is not set
    # CONFIG_SCx200_ACB is not set
    # CONFIG_I2C_SIS5595 is not set
    # CONFIG_I2C_SIS630 is not set
    # CONFIG_I2C_SIS96X is not set
    # CONFIG_I2C_TAOS_EVM is not set
    # CONFIG_I2C_TINY_USB is not set
    # CONFIG_I2C_VIA is not set
    CONFIG_I2C_VIAPRO=y
    # CONFIG_I2C_VOODOO3 is not set

    #
    # Miscellaneous I2C Chip support
    #
    # CONFIG_SENSORS_DS1337 is not set
    # CONFIG_SENSORS_DS1374 is not set
    # CONFIG_DS1682 is not set
    CONFIG_SENSORS_EEPROM=y
    # CONFIG_SENSORS_PCF8574 is not set
    # CONFIG_SENSORS_PCA9539 is not set
    # CONFIG_SENSORS_PCF8591 is not set
    # CONFIG_SENSORS_MAX6875 is not set
    # CONFIG_SENSORS_TSL2550 is not set
    # CONFIG_I2C_DEBUG_CORE is not set
    # CONFIG_I2C_DEBUG_ALGO is not set
    # CONFIG_I2C_DEBUG_BUS is not set
    # CONFIG_I2C_DEBUG_CHIP is not set

    #
    # SPI support
    #
    # CONFIG_SPI is not set
    # CONFIG_SPI_MASTER is not set
    # CONFIG_W1 is not set
    # CONFIG_POWER_SUPPLY is not set
    CONFIG_HWMON=y
    CONFIG_HWMON_VID=y
    CONFIG_SENSORS_ABITUGURU=y
    # CONFIG_SENSORS_ABITUGURU3 is not set
    # CONFIG_SENSORS_AD7418 is not set
    # CONFIG_SENSORS_ADM1021 is not set
    # CONFIG_SENSORS_ADM1025 is not set
    # CONFIG_SENSORS_ADM1026 is not set
    # CONFIG_SENSORS_ADM1029 is not set
    # CONFIG_SENSORS_ADM1031 is not set
    # CONFIG_SENSORS_ADM9240 is not set
    # CONFIG_SENSORS_ADT7470 is not set
    CONFIG_SENSORS_K8TEMP=y
    # CONFIG_SENSORS_ASB100 is not set
    # CONFIG_SENSORS_ATXP1 is not set
    # CONFIG_SENSORS_DS1621 is not set
    # CONFIG_SENSORS_I5K_AMB is not set
    # CONFIG_SENSORS_F71805F is not set
    # CONFIG_SENSORS_F71882FG is not set
    # CONFIG_SENSORS_F75375S is not set
    # CONFIG_SENSORS_FSCHER is not set
    # CONFIG_SENSORS_FSCPOS is not set
    # CONFIG_SENSORS_FSCHMD is not set
    # CONFIG_SENSORS_GL518SM is not set
    # CONFIG_SENSORS_GL520SM is not set
    # CONFIG_SENSORS_CORETEMP is not set
    # CONFIG_SENSORS_IT87 is not set
    # CONFIG_SENSORS_LM63 is not set
    # CONFIG_SENSORS_LM75 is not set
    # CONFIG_SENSORS_LM77 is not set
    # CONFIG_SENSORS_LM78 is not set
    # CONFIG_SENSORS_LM80 is not set
    # CONFIG_SENSORS_LM83 is not set
    # CONFIG_SENSORS_LM85 is not set
    # CONFIG_SENSORS_LM87 is not set
    # CONFIG_SENSORS_LM90 is not set
    # CONFIG_SENSORS_LM92 is not set
    # CONFIG_SENSORS_LM93 is not set
    # CONFIG_SENSORS_MAX1619 is not set
    # CONFIG_SENSORS_MAX6650 is not set
    # CONFIG_SENSORS_PC87360 is not set
    # CONFIG_SENSORS_PC87427 is not set
    # CONFIG_SENSORS_SIS5595 is not set
    # CONFIG_SENSORS_DME1737 is not set
    # CONFIG_SENSORS_SMSC47M1 is not set
    # CONFIG_SENSORS_SMSC47M192 is not set
    # CONFIG_SENSORS_SMSC47B397 is not set
    # CONFIG_SENSORS_THMC50 is not set
    # CONFIG_SENSORS_VIA686A is not set
    # CONFIG_SENSORS_VT1211 is not set
    # CONFIG_SENSORS_VT8231 is not set
    # CONFIG_SENSORS_W83781D is not set
    # CONFIG_SENSORS_W83791D is not set
    # CONFIG_SENSORS_W83792D is not set
    # CONFIG_SENSORS_W83793 is not set
    # CONFIG_SENSORS_W83L785TS is not set
    CONFIG_SENSORS_W83627HF=y
    # CONFIG_SENSORS_W83627EHF is not set
    # CONFIG_SENSORS_HDAPS is not set
    # CONFIG_SENSORS_APPLESMC is not set
    # CONFIG_HWMON_DEBUG_CHIP is not set
    CONFIG_WATCHDOG=y
    # CONFIG_WATCHDOG_NOWAYOUT is not set

    #
    # Watchdog Device Drivers
    #
    # CONFIG_SOFT_WATCHDOG is not set
    # CONFIG_ACQUIRE_WDT is not set
    # CONFIG_ADVANTECH_WDT is not set
    # CONFIG_ALIM1535_WDT is not set
    # CONFIG_ALIM7101_WDT is not set
    # CONFIG_SC520_WDT is not set
    # CONFIG_EUROTECH_WDT is not set
    # CONFIG_IB700_WDT is not set
    # CONFIG_IBMASR is not set
    # CONFIG_WAFER_WDT is not set
    # CONFIG_I6300ESB_WDT is not set
    # CONFIG_ITCO_WDT is not set
    # CONFIG_IT8712F_WDT is not set
    # CONFIG_SC1200_WDT is not set
    # CONFIG_PC87413_WDT is not set
    # CONFIG_60XX_WDT is not set
    # CONFIG_SBC8360_WDT is not set
    # CONFIG_SBC7240_WDT is not set
    # CONFIG_CPU5_WDT is not set
    # CONFIG_SMSC37B787_WDT is not set
    CONFIG_W83627HF_WDT=y
    # CONFIG_W83697HF_WDT is not set
    # CONFIG_W83877F_WDT is not set
    # CONFIG_W83977F_WDT is not set
    # CONFIG_MACHZ_WDT is not set
    # CONFIG_SBC_EPX_C3_WATCHDOG is not set

    #
    # PCI-based Watchdog Cards
    #
    # CONFIG_PCIPCWATCHDOG is not set
    # CONFIG_WDTPCI is not set

    #
    # USB-based Watchdog Cards
    #
    # CONFIG_USBPCWATCHDOG is not set

    #
    # Sonics Silicon Backplane
    #
    CONFIG_SSB_POSSIBLE=y
    # CONFIG_SSB is not set

    #
    # Multifunction device drivers
    #
    # CONFIG_MFD_SM501 is not set

    #
    # Multimedia devices
    #
    # CONFIG_VIDEO_DEV is not set
    # CONFIG_DVB_CORE is not set
    # CONFIG_DAB is not set

    #
    # Graphics support
    #
    CONFIG_AGP=y
    # CONFIG_AGP_ALI is not set
    # CONFIG_AGP_ATI is not set
    # CONFIG_AGP_AMD is not set
    CONFIG_AGP_AMD64=y
    # CONFIG_AGP_INTEL is not set
    # CONFIG_AGP_NVIDIA is not set
    # CONFIG_AGP_SIS is not set
    # CONFIG_AGP_SWORKS is not set
    # CONFIG_AGP_VIA is not set
    # CONFIG_AGP_EFFICEON is not set
    CONFIG_DRM=y
    # CONFIG_DRM_TDFX is not set
    # CONFIG_DRM_R128 is not set
    CONFIG_DRM_RADEON=y
    # CONFIG_DRM_MGA is not set
    # CONFIG_DRM_SIS is not set
    # CONFIG_DRM_VIA is not set
    # CONFIG_DRM_SAVAGE is not set
    # CONFIG_VGASTATE is not set
    # CONFIG_VIDEO_OUTPUT_CONTROL is not set
    # CONFIG_FB is not set
    # CONFIG_BACKLIGHT_LCD_SUPPORT is not set

    #
    # Display device support
    #
    # CONFIG_DISPLAY_SUPPORT is not set

    #
    # Console display driver support
    #
    CONFIG_VGA_CONSOLE=y
    # CONFIG_VGACON_SOFT_SCROLLBACK is not set
    # CONFIG_VIDEO_SELECT is not set
    CONFIG_DUMMY_CONSOLE=y

    #
    # Sound
    #
    CONFIG_SOUND=y

    #
    # Advanced Linux Sound Architecture
    #
    CONFIG_SND=y
    CONFIG_SND_TIMER=y
    CONFIG_SND_PCM=y
    CONFIG_SND_RAWMIDI=y
    CONFIG_SND_SEQUENCER=y
    # CONFIG_SND_SEQ_DUMMY is not set
    CONFIG_SND_OSSEMUL=y
    CONFIG_SND_MIXER_OSS=y
    CONFIG_SND_PCM_OSS=y
    CONFIG_SND_PCM_OSS_PLUGINS=y
    CONFIG_SND_SEQUENCER_OSS=y
    # CONFIG_SND_DYNAMIC_MINORS is not set
    # CONFIG_SND_SUPPORT_OLD_API is not set
    # CONFIG_SND_VERBOSE_PROCFS is not set
    # CONFIG_SND_VERBOSE_PRINTK is not set
    # CONFIG_SND_DEBUG is not set

    #
    # Generic devices
    #
    CONFIG_SND_MPU401_UART=y
    CONFIG_SND_AC97_CODEC=y
    # CONFIG_SND_DUMMY is not set
    # CONFIG_SND_VIRMIDI is not set
    # CONFIG_SND_MTPAV is not set
    # CONFIG_SND_SERIAL_U16550 is not set
    # CONFIG_SND_MPU401 is not set

    #
    # PCI devices
    #
    # CONFIG_SND_AD1889 is not set
    # CONFIG_SND_ALS300 is not set
    # CONFIG_SND_ALS4000 is not set
    # CONFIG_SND_ALI5451 is not set
    # CONFIG_SND_ATIIXP is not set
    # CONFIG_SND_ATIIXP_MODEM is not set
    # CONFIG_SND_AU8810 is not set
    # CONFIG_SND_AU8820 is not set
    # CONFIG_SND_AU8830 is not set
    # CONFIG_SND_AZT3328 is not set
    # CONFIG_SND_BT87X is not set
    # CONFIG_SND_CA0106 is not set
    # CONFIG_SND_CMIPCI is not set
    # CONFIG_SND_CS4281 is not set
    # CONFIG_SND_CS46XX is not set
    # CONFIG_SND_CS5530 is not set
    # CONFIG_SND_CS5535AUDIO is not set
    # CONFIG_SND_DARLA20 is not set
    # CONFIG_SND_GINA20 is not set
    # CONFIG_SND_LAYLA20 is not set
    # CONFIG_SND_DARLA24 is not set
    # CONFIG_SND_GINA24 is not set
    # CONFIG_SND_LAYLA24 is not set
    # CONFIG_SND_MONA is not set
    # CONFIG_SND_MIA is not set
    # CONFIG_SND_ECHO3G is not set
    # CONFIG_SND_INDIGO is not set
    # CONFIG_SND_INDIGOIO is not set
    # CONFIG_SND_INDIGODJ is not set
    # CONFIG_SND_EMU10K1 is not set
    # CONFIG_SND_EMU10K1X is not set
    # CONFIG_SND_ENS1370 is not set
    # CONFIG_SND_ENS1371 is not set
    # CONFIG_SND_ES1938 is not set
    # CONFIG_SND_ES1968 is not set
    # CONFIG_SND_FM801 is not set
    # CONFIG_SND_HDA_INTEL is not set
    # CONFIG_SND_HDSP is not set
    # CONFIG_SND_HDSPM is not set
    # CONFIG_SND_ICE1712 is not set
    # CONFIG_SND_ICE1724 is not set
    # CONFIG_SND_INTEL8X0 is not set
    # CONFIG_SND_INTEL8X0M is not set
    # CONFIG_SND_KORG1212 is not set
    # CONFIG_SND_MAESTRO3 is not set
    # CONFIG_SND_MIXART is not set
    # CONFIG_SND_NM256 is not set
    # CONFIG_SND_PCXHR is not set
    # CONFIG_SND_RIPTIDE is not set
    # CONFIG_SND_RME32 is not set
    # CONFIG_SND_RME96 is not set
    # CONFIG_SND_RME9652 is not set
    # CONFIG_SND_SONICVIBES is not set
    # CONFIG_SND_TRIDENT is not set
    CONFIG_SND_VIA82XX=y
    # CONFIG_SND_VIA82XX_MODEM is not set
    # CONFIG_SND_VX222 is not set
    # CONFIG_SND_YMFPCI is not set
    CONFIG_SND_AC97_POWER_SAVE=y
    CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0

    #
    # USB devices
    #
    # CONFIG_SND_USB_AUDIO is not set
    # CONFIG_SND_USB_USX2Y is not set
    # CONFIG_SND_USB_CAIAQ is not set

    #
    # System on Chip audio support
    #
    # CONFIG_SND_SOC is not set

    #
    # SoC Audio support for SuperH
    #

    #
    # Open Sound System
    #
    # CONFIG_SOUND_PRIME is not set
    CONFIG_AC97_BUS=y
    CONFIG_HID_SUPPORT=y
    CONFIG_HID=y
    # CONFIG_HID_DEBUG is not set
    # CONFIG_HIDRAW is not set

    #
    # USB Input Devices
    #
    CONFIG_USB_HID=y
    # CONFIG_USB_HIDINPUT_POWERBOOK is not set
    # CONFIG_HID_FF is not set
    # CONFIG_USB_HIDDEV is not set
    CONFIG_USB_SUPPORT=y
    CONFIG_USB_ARCH_HAS_HCD=y
    CONFIG_USB_ARCH_HAS_OHCI=y
    CONFIG_USB_ARCH_HAS_EHCI=y
    CONFIG_USB=y
    # CONFIG_USB_DEBUG is not set

    #
    # Miscellaneous USB options
    #
    # CONFIG_USB_DEVICEFS is not set
    # CONFIG_USB_DEVICE_CLASS is not set
    # CONFIG_USB_DYNAMIC_MINORS is not set
    # CONFIG_USB_SUSPEND is not set
    # CONFIG_USB_PERSIST is not set
    # CONFIG_USB_OTG is not set

    #
    # USB Host Controller Drivers
    #
    CONFIG_USB_EHCI_HCD=y
    CONFIG_USB_EHCI_SPLIT_ISO=y
    CONFIG_USB_EHCI_ROOT_HUB_TT=y
    CONFIG_USB_EHCI_TT_NEWSCHED=y
    # CONFIG_USB_ISP116X_HCD is not set
    # CONFIG_USB_OHCI_HCD is not set
    CONFIG_USB_UHCI_HCD=y
    # CONFIG_USB_SL811_HCD is not set
    # CONFIG_USB_R8A66597_HCD is not set

    #
    # USB Device Class drivers
    #
    # CONFIG_USB_ACM is not set
    CONFIG_USB_PRINTER=y

    #
    # NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
    #

    #
    # may also be needed; see USB_STORAGE Help for more information
    #
    CONFIG_USB_STORAGE=y
    # CONFIG_USB_STORAGE_DEBUG is not set
    # CONFIG_USB_STORAGE_DATAFAB is not set
    # CONFIG_USB_STORAGE_FREECOM is not set
    # CONFIG_USB_STORAGE_ISD200 is not set
    # CONFIG_USB_STORAGE_DPCM is not set
    # CONFIG_USB_STORAGE_USBAT is not set
    # CONFIG_USB_STORAGE_SDDR09 is not set
    # CONFIG_USB_STORAGE_SDDR55 is not set
    # CONFIG_USB_STORAGE_JUMPSHOT is not set
    # CONFIG_USB_STORAGE_ALAUDA is not set
    # CONFIG_USB_STORAGE_KARMA is not set
    # CONFIG_USB_LIBUSUAL is not set

    #
    # USB Imaging devices
    #
    # CONFIG_USB_MDC800 is not set
    # CONFIG_USB_MICROTEK is not set
    # CONFIG_USB_MON is not set

    #
    # USB port drivers
    #

    #
    # USB Serial Converter support
    #
    # CONFIG_USB_SERIAL is not set

    #
    # USB Miscellaneous drivers
    #
    # CONFIG_USB_EMI62 is not set
    # CONFIG_USB_EMI26 is not set
    # CONFIG_USB_ADUTUX is not set
    # CONFIG_USB_AUERSWALD is not set
    # CONFIG_USB_RIO500 is not set
    # CONFIG_USB_LEGOTOWER is not set
    # CONFIG_USB_LCD is not set
    # CONFIG_USB_BERRY_CHARGE is not set
    # CONFIG_USB_LED is not set
    # CONFIG_USB_CYPRESS_CY7C63 is not set
    # CONFIG_USB_CYTHERM is not set
    # CONFIG_USB_PHIDGET is not set
    # CONFIG_USB_IDMOUSE is not set
    # CONFIG_USB_FTDI_ELAN is not set
    # CONFIG_USB_APPLEDISPLAY is not set
    # CONFIG_USB_SISUSBVGA is not set
    # CONFIG_USB_LD is not set
    # CONFIG_USB_TRANCEVIBRATOR is not set
    # CONFIG_USB_IOWARRIOR is not set

    #
    # USB DSL modem support
    #

    #
    # USB Gadget Support
    #
    # CONFIG_USB_GADGET is not set
    # CONFIG_MMC is not set
    # CONFIG_NEW_LEDS is not set
    # CONFIG_INFINIBAND is not set
    # CONFIG_EDAC is not set
    CONFIG_RTC_LIB=y
    CONFIG_RTC_CLASS=y
    CONFIG_RTC_HCTOSYS=y
    CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
    # CONFIG_RTC_DEBUG is not set

    #
    # RTC interfaces
    #
    # CONFIG_RTC_INTF_SYSFS is not set
    # CONFIG_RTC_INTF_PROC is not set
    CONFIG_RTC_INTF_DEV=y
    CONFIG_RTC_INTF_DEV_UIE_EMUL=y
    # CONFIG_RTC_DRV_TEST is not set

    #
    # I2C RTC drivers
    #
    # CONFIG_RTC_DRV_DS1307 is not set
    # CONFIG_RTC_DRV_DS1374 is not set
    # CONFIG_RTC_DRV_DS1672 is not set
    # CONFIG_RTC_DRV_MAX6900 is not set
    # CONFIG_RTC_DRV_RS5C372 is not set
    # CONFIG_RTC_DRV_ISL1208 is not set
    # CONFIG_RTC_DRV_X1205 is not set
    # CONFIG_RTC_DRV_PCF8563 is not set
    # CONFIG_RTC_DRV_PCF8583 is not set
    # CONFIG_RTC_DRV_M41T80 is not set

    #
    # SPI RTC drivers
    #

    #
    # Platform RTC drivers
    #
    CONFIG_RTC_DRV_CMOS=y
    # CONFIG_RTC_DRV_DS1553 is not set
    # CONFIG_RTC_DRV_STK17TA8 is not set
    # CONFIG_RTC_DRV_DS1742 is not set
    # CONFIG_RTC_DRV_M48T86 is not set
    # CONFIG_RTC_DRV_M48T59 is not set
    # CONFIG_RTC_DRV_V3020 is not set

    #
    # on-CPU RTC drivers
    #
    # CONFIG_DMADEVICES is not set
    # CONFIG_VIRTUALIZATION is not set

    #
    # Userspace I/O
    #
    # CONFIG_UIO is not set

    #
    # Firmware Drivers
    #
    # CONFIG_EDD is not set
    # CONFIG_DELL_RBU is not set
    # CONFIG_DCDBAS is not set
    # CONFIG_DMIID is not set

    #
    # File systems
    #
    CONFIG_EXT2_FS=y
    CONFIG_EXT2_FS_XATTR=y
    CONFIG_EXT2_FS_POSIX_ACL=y
    CONFIG_EXT2_FS_SECURITY=y
    # CONFIG_EXT2_FS_XIP is not set
    CONFIG_EXT3_FS=y
    CONFIG_EXT3_FS_XATTR=y
    CONFIG_EXT3_FS_POSIX_ACL=y
    CONFIG_EXT3_FS_SECURITY=y
    # CONFIG_EXT4DEV_FS is not set
    CONFIG_JBD=y
    CONFIG_FS_MBCACHE=y
    # CONFIG_REISERFS_FS is not set
    # CONFIG_JFS_FS is not set
    CONFIG_FS_POSIX_ACL=y
    # CONFIG_XFS_FS is not set
    # CONFIG_GFS2_FS is not set
    # CONFIG_OCFS2_FS is not set
    # CONFIG_MINIX_FS is not set
    # CONFIG_ROMFS_FS is not set
    CONFIG_INOTIFY=y
    CONFIG_INOTIFY_USER=y
    # CONFIG_QUOTA is not set
    CONFIG_DNOTIFY=y
    # CONFIG_AUTOFS_FS is not set
    # CONFIG_AUTOFS4_FS is not set
    # CONFIG_FUSE_FS is not set

    #
    # CD-ROM/DVD Filesystems
    #
    CONFIG_ISO9660_FS=y
    CONFIG_JOLIET=y
    CONFIG_ZISOFS=y
    CONFIG_UDF_FS=y
    CONFIG_UDF_NLS=y

    #
    # DOS/FAT/NT Filesystems
    #
    # CONFIG_MSDOS_FS is not set
    # CONFIG_VFAT_FS is not set
    # CONFIG_NTFS_FS is not set

    #
    # Pseudo filesystems
    #
    CONFIG_PROC_FS=y
    CONFIG_PROC_KCORE=y
    CONFIG_PROC_SYSCTL=y
    CONFIG_SYSFS=y
    CONFIG_TMPFS=y
    # CONFIG_TMPFS_POSIX_ACL is not set
    # CONFIG_HUGETLBFS is not set
    # CONFIG_HUGETLB_PAGE is not set
    # CONFIG_CONFIGFS_FS is not set

    #
    # Miscellaneous filesystems
    #
    # CONFIG_ADFS_FS is not set
    # CONFIG_AFFS_FS is not set
    # CONFIG_HFS_FS is not set
    # CONFIG_HFSPLUS_FS is not set
    # CONFIG_BEFS_FS is not set
    # CONFIG_BFS_FS is not set
    # CONFIG_EFS_FS is not set
    # CONFIG_CRAMFS is not set
    # CONFIG_VXFS_FS is not set
    # CONFIG_HPFS_FS is not set
    # CONFIG_QNX4FS_FS is not set
    # CONFIG_SYSV_FS is not set
    # CONFIG_UFS_FS is not set
    CONFIG_NETWORK_FILESYSTEMS=y
    # CONFIG_NFS_FS is not set
    CONFIG_NFSD=y
    CONFIG_NFSD_V3=y
    # CONFIG_NFSD_V3_ACL is not set
    # CONFIG_NFSD_V4 is not set
    CONFIG_NFSD_TCP=y
    CONFIG_LOCKD=y
    CONFIG_LOCKD_V4=y
    CONFIG_EXPORTFS=y
    CONFIG_NFS_COMMON=y
    CONFIG_SUNRPC=y
    # CONFIG_SUNRPC_BIND34 is not set
    # CONFIG_RPCSEC_GSS_KRB5 is not set
    # CONFIG_RPCSEC_GSS_SPKM3 is not set
    # CONFIG_SMB_FS is not set
    # CONFIG_CIFS is not set
    # CONFIG_NCP_FS is not set
    # CONFIG_CODA_FS is not set
    # CONFIG_AFS_FS is not set

    #
    # Partition Types
    #
    # CONFIG_PARTITION_ADVANCED is not set
    CONFIG_MSDOS_PARTITION=y
    CONFIG_NLS=y
    CONFIG_NLS_DEFAULT="iso8859-1"
    # CONFIG_NLS_CODEPAGE_437 is not set
    # CONFIG_NLS_CODEPAGE_737 is not set
    # CONFIG_NLS_CODEPAGE_775 is not set
    # CONFIG_NLS_CODEPAGE_850 is not set
    # CONFIG_NLS_CODEPAGE_852 is not set
    # CONFIG_NLS_CODEPAGE_855 is not set
    # CONFIG_NLS_CODEPAGE_857 is not set
    # CONFIG_NLS_CODEPAGE_860 is not set
    # CONFIG_NLS_CODEPAGE_861 is not set
    # CONFIG_NLS_CODEPAGE_862 is not set
    # CONFIG_NLS_CODEPAGE_863 is not set
    # CONFIG_NLS_CODEPAGE_864 is not set
    # CONFIG_NLS_CODEPAGE_865 is not set
    # CONFIG_NLS_CODEPAGE_866 is not set
    # CONFIG_NLS_CODEPAGE_869 is not set
    # CONFIG_NLS_CODEPAGE_936 is not set
    # CONFIG_NLS_CODEPAGE_950 is not set
    # CONFIG_NLS_CODEPAGE_932 is not set
    # CONFIG_NLS_CODEPAGE_949 is not set
    # CONFIG_NLS_CODEPAGE_874 is not set
    # CONFIG_NLS_ISO8859_8 is not set
    # CONFIG_NLS_CODEPAGE_1250 is not set
    # CONFIG_NLS_CODEPAGE_1251 is not set
    CONFIG_NLS_ASCII=y
    CONFIG_NLS_ISO8859_1=y
    # CONFIG_NLS_ISO8859_2 is not set
    # CONFIG_NLS_ISO8859_3 is not set
    # CONFIG_NLS_ISO8859_4 is not set
    # CONFIG_NLS_ISO8859_5 is not set
    # CONFIG_NLS_ISO8859_6 is not set
    # CONFIG_NLS_ISO8859_7 is not set
    # CONFIG_NLS_ISO8859_9 is not set
    # CONFIG_NLS_ISO8859_13 is not set
    # CONFIG_NLS_ISO8859_14 is not set
    # CONFIG_NLS_ISO8859_15 is not set
    CONFIG_NLS_KOI8_R=y
    # CONFIG_NLS_KOI8_U is not set
    CONFIG_NLS_UTF8=y
    # CONFIG_DLM is not set
    # CONFIG_INSTRUMENTATION is not set

    #
    # Kernel hacking
    #
    CONFIG_TRACE_IRQFLAGS_SUPPORT=y
    CONFIG_PRINTK_TIME=y
    CONFIG_ENABLE_WARN_DEPRECATED=y
    # CONFIG_ENABLE_MUST_CHECK is not set
    CONFIG_MAGIC_SYSRQ=y
    # CONFIG_UNUSED_SYMBOLS is not set
    # CONFIG_DEBUG_FS is not set
    # CONFIG_HEADERS_CHECK is not set
    CONFIG_DEBUG_KERNEL=y
    # CONFIG_DEBUG_SHIRQ is not set
    CONFIG_DETECT_SOFTLOCKUP=y
    CONFIG_SCHED_DEBUG=y
    # CONFIG_SCHEDSTATS is not set
    # CONFIG_TIMER_STATS is not set
    # CONFIG_SLUB_DEBUG_ON is not set
    CONFIG_DEBUG_PREEMPT=y
    # CONFIG_DEBUG_RT_MUTEXES is not set
    # CONFIG_RT_MUTEX_TESTER is not set
    CONFIG_DEBUG_SPINLOCK=y
    CONFIG_DEBUG_MUTEXES=y
    CONFIG_DEBUG_LOCK_ALLOC=y
    CONFIG_PROVE_LOCKING=y
    CONFIG_LOCKDEP=y
    # CONFIG_LOCK_STAT is not set
    # CONFIG_DEBUG_LOCKDEP is not set
    CONFIG_TRACE_IRQFLAGS=y
    CONFIG_DEBUG_SPINLOCK_SLEEP=y
    # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
    CONFIG_STACKTRACE=y
    # CONFIG_DEBUG_KOBJECT is not set
    # CONFIG_DEBUG_HIGHMEM is not set
    CONFIG_DEBUG_BUGVERBOSE=y
    CONFIG_DEBUG_INFO=y
    # CONFIG_DEBUG_VM is not set
    # CONFIG_DEBUG_LIST is not set
    # CONFIG_DEBUG_SG is not set
    CONFIG_FRAME_POINTER=y
    CONFIG_FORCED_INLINING=y
    # CONFIG_BOOT_PRINTK_DELAY is not set
    # CONFIG_FAULT_INJECTION is not set
    # CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
    # CONFIG_SAMPLES is not set
    # CONFIG_WANT_EXTRA_DEBUG_INFORMATION is not set
    # CONFIG_UNWIND_INFO is not set
    # CONFIG_KGDB is not set
    # CONFIG_KGDB_ATTACH_WAIT is not set
    CONFIG_EARLY_PRINTK=y
    # CONFIG_DEBUG_STACKOVERFLOW is not set
    # CONFIG_DEBUG_STACK_USAGE is not set
    # CONFIG_DEBUG_PAGEALLOC is not set
    # CONFIG_DEBUG_RODATA is not set
    CONFIG_4KSTACKS=y
    CONFIG_X86_FIND_SMP_CONFIG=y
    CONFIG_X86_MPPARSE=y
    CONFIG_DOUBLEFAULT=y
    CONFIG_IO_DELAY_TYPE_0X80=0
    CONFIG_IO_DELAY_TYPE_0XED=1
    CONFIG_IO_DELAY_TYPE_UDELAY=2
    CONFIG_IO_DELAY_TYPE_NONE=3
    # CONFIG_IO_DELAY_0X80 is not set
    # CONFIG_IO_DELAY_0XED is not set
    # CONFIG_IO_DELAY_UDELAY is not set
    CONFIG_IO_DELAY_NONE=y
    CONFIG_DEFAULT_IO_DELAY_TYPE=3

    #
    # Security options
    #
    # CONFIG_KEYS is not set
    # CONFIG_SECURITY is not set
    # CONFIG_SECURITY_FILE_CAPABILITIES is not set
    CONFIG_CRYPTO=y
    CONFIG_CRYPTO_ALGAPI=y
    CONFIG_CRYPTO_BLKCIPHER=y
    CONFIG_CRYPTO_HASH=y
    CONFIG_CRYPTO_MANAGER=y
    CONFIG_CRYPTO_HMAC=y
    # CONFIG_CRYPTO_XCBC is not set
    # CONFIG_CRYPTO_NULL is not set
    # CONFIG_CRYPTO_MD4 is not set
    CONFIG_CRYPTO_MD5=y
    CONFIG_CRYPTO_SHA1=y
    CONFIG_CRYPTO_SHA256=y
    # CONFIG_CRYPTO_SHA512 is not set
    # CONFIG_CRYPTO_WP512 is not set
    # CONFIG_CRYPTO_TGR192 is not set
    # CONFIG_CRYPTO_GF128MUL is not set
    CONFIG_CRYPTO_ECB=y
    # CONFIG_CRYPTO_CBC is not set
    # CONFIG_CRYPTO_PCBC is not set
    # CONFIG_CRYPTO_LRW is not set
    # CONFIG_CRYPTO_XTS is not set
    # CONFIG_CRYPTO_CRYPTD is not set
    # CONFIG_CRYPTO_DES is not set
    # CONFIG_CRYPTO_FCRYPT is not set
    # CONFIG_CRYPTO_BLOWFISH is not set
    # CONFIG_CRYPTO_TWOFISH is not set
    # CONFIG_CRYPTO_TWOFISH_586 is not set
    # CONFIG_CRYPTO_SERPENT is not set
    # CONFIG_CRYPTO_AES is not set
    # CONFIG_CRYPTO_AES_586 is not set
    # CONFIG_CRYPTO_CAST5 is not set
    # CONFIG_CRYPTO_CAST6 is not set
    # CONFIG_CRYPTO_TEA is not set
    CONFIG_CRYPTO_ARC4=y
    # CONFIG_CRYPTO_KHAZAD is not set
    # CONFIG_CRYPTO_ANUBIS is not set
    # CONFIG_CRYPTO_SEED is not set
    # CONFIG_CRYPTO_DEFLATE is not set
    # CONFIG_CRYPTO_MICHAEL_MIC is not set
    # CONFIG_CRYPTO_CRC32C is not set
    # CONFIG_CRYPTO_CAMELLIA is not set
    # CONFIG_CRYPTO_AUTHENC is not set
    # CONFIG_CRYPTO_HW is not set

    #
    # Library routines
    #
    CONFIG_BITREVERSE=y
    CONFIG_CRC_CCITT=y
    # CONFIG_CRC16 is not set
    CONFIG_CRC_ITU_T=y
    CONFIG_CRC32=y
    # CONFIG_CRC7 is not set
    # CONFIG_LIBCRC32C is not set
    CONFIG_ZLIB_INFLATE=y
    CONFIG_PLIST=y
    CONFIG_HAS_IOMEM=y
    CONFIG_HAS_IOPORT=y
    CONFIG_HAS_DMA=y

    --
    Kevin Winchester

    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
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    Please read the FAQ at http://www.tux.org/lkml/

  2. Re: hwclock failure in x86.git

    Kevin Winchester wrote:
    > My first time building and booting the mm branch of x86.git was pretty
    > successful. The only error I noticed was the following in my dmesg:
    >
    > hwclock[622] general protection ip:804b226 sp:bff43e30 error:0
    >
    > I'm not sure exactly how to debug this. I could bisect, but there seems
    > to be some useful debug information in there, so there might be
    > something better to try first.
    >


    That's a userspace IP; it implies the userspace hwclock binary did
    something bad, or the kernel didn't permit it to do something it should
    have. The best thing to do would probably to strace hwclock and see
    what it did when it died.

    -hpa
    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

  3. Re: hwclock failure in x86.git

    H. Peter Anvin wrote:
    > Kevin Winchester wrote:
    >> My first time building and booting the mm branch of x86.git was pretty
    >> successful. The only error I noticed was the following in my dmesg:
    >>
    >> hwclock[622] general protection ip:804b226 sp:bff43e30 error:0
    >>
    >> I'm not sure exactly how to debug this. I could bisect, but there seems
    >> to be some useful debug information in there, so there might be
    >> something better to try first.
    >>

    >
    > That's a userspace IP; it implies the userspace hwclock binary did
    > something bad, or the kernel didn't permit it to do something it should
    > have. The best thing to do would probably to strace hwclock and see
    > what it did when it died.
    >


    Unfortunately, but the time I can get a chance to run hwclock, the
    problem seems to have fixed itself. I tried booting into single user
    mode, but `/etc/init.d/hwclock.sh restart` succeeds once I have my prompt.

    A few other facts:

    - This is an Athlon64 box running X83_32
    - I use hpet=force for the Via chipset
    - A little more of the demsg is:

    [ 17.511262] rtc_cmos 00:05: setting system clock to 2008-01-10
    23:44:16 UTC (1200008656)
    [ 17.545948] EXT3-fs: mounted filesystem with ordered data mode.
    [ 17.545986] VFS: Mounted root (ext3 filesystem) readonly.
    [ 17.546142] Freeing unused kernel memory: 144k freed
    [ 17.546260] kjournald starting. Commit interval 5 seconds
    [ 21.861249] hwclock[622] general protection ip:804b226 sp:bfd98480
    error:0
    [ 22.416442] Velocity is AUTO mode
    [ 23.093416] Adding 1502036k swap on /dev/sda5. Priority:-1 extents:1
    across:1502036k
    [ 23.416756] EXT3 FS on sda1, internal journal
    [ 24.009669] kjournald starting. Commit interval 5 seconds
    [ 24.009889] EXT3 FS on sda6, internal journal
    [ 24.009899] EXT3-fs: mounted filesystem with ordered data mode.
    [ 24.053164] eth0: Link auto-negotiation speed 100M bps full duplex
    [ 28.733360] agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
    [ 28.733872] agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode
    [ 28.734354] agpgart: Putting AGP V3 device at 0000:01:00.0 into 8x mode
    [ 29.089412] [drm] Setting GART location based on new memory map
    [ 29.089842] [drm] Loading R200 Microcode
    [ 29.090172] [drm] writeback test succeeded in 1 usecs
    [ 143.076821] Marking TSC unstable due to: cpufreq changes.
    [ 143.084910] Time: hpet clocksource has been installed.
    [ 143.670905] Clocksource tsc unstable (delta = -231086796 ns)

    So the TSC is being marked unstable because of cpufreq changes. I have
    no idea when it comes to TSCs and HPETs and how the RTC works (other
    than what the abbreviations stand for), so this all may be meaningless.
    I'll try disabling cpufreq to see if that has an effect.

    --
    Kevin Winchester

    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

  4. Re: hwclock failure in x86.git

    Kevin Winchester wrote:
    > H. Peter Anvin wrote:
    >> Kevin Winchester wrote:
    >>> My first time building and booting the mm branch of x86.git was pretty
    >>> successful. The only error I noticed was the following in my dmesg:
    >>>
    >>> hwclock[622] general protection ip:804b226 sp:bff43e30 error:0
    >>>
    >>> I'm not sure exactly how to debug this. I could bisect, but there seems
    >>> to be some useful debug information in there, so there might be
    >>> something better to try first.
    >>>

    >> That's a userspace IP; it implies the userspace hwclock binary did
    >> something bad, or the kernel didn't permit it to do something it should
    >> have. The best thing to do would probably to strace hwclock and see
    >> what it did when it died.
    >>

    >
    > Unfortunately, but the time I can get a chance to run hwclock, the
    > problem seems to have fixed itself. I tried booting into single user
    > mode, but `/etc/init.d/hwclock.sh restart` succeeds once I have my prompt.
    >


    The other thing you can do is to download the debug information and
    source code for hwclock from your particular distro, and find out
    exactly what operation inside the hwclock binary is triggering the segfault.

    The only other option is to bisect.

    -hpa
    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

  5. Re: hwclock failure in x86.git

    On Thu, 10 Jan 2008 17:13:51 -0800
    "H. Peter Anvin" wrote:

    > Kevin Winchester wrote:
    > > H. Peter Anvin wrote:
    > >> Kevin Winchester wrote:
    > >>> My first time building and booting the mm branch of x86.git was pretty
    > >>> successful. The only error I noticed was the following in my dmesg:
    > >>>
    > >>> hwclock[622] general protection ip:804b226 sp:bff43e30 error:0
    > >>>
    > >>> I'm not sure exactly how to debug this. I could bisect, but there seems
    > >>> to be some useful debug information in there, so there might be
    > >>> something better to try first.
    > >>>
    > >> That's a userspace IP; it implies the userspace hwclock binary did
    > >> something bad, or the kernel didn't permit it to do something it should
    > >> have. The best thing to do would probably to strace hwclock and see
    > >> what it did when it died.
    > >>

    > >
    > > Unfortunately, but the time I can get a chance to run hwclock, the
    > > problem seems to have fixed itself. I tried booting into single user
    > > mode, but `/etc/init.d/hwclock.sh restart` succeeds once I have my prompt.
    > >

    >
    > The other thing you can do is to download the debug information and
    > source code for hwclock from your particular distro, and find out
    > exactly what operation inside the hwclock binary is triggering the segfault.
    >
    > The only other option is to bisect.
    >


    Bisect says...

    4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b is first bad commit
    commit 4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b
    Author: mboton@gmail.com
    Date: Wed Jan 9 13:31:11 2008 +0100

    x86: ioport_{32|64}.c unification

    ioport_{32|64}.c unification.

    This patch unifies the code from the ioport_32.c and ioport_64.c files.

    Tested and working fine with i386 and x86_64 kernels.

    Signed-off-by: Miguel Botón
    Signed-off-by: Ingo Molnar
    Signed-off-by: Thomas Gleixner

    I'll take a look at the unification and see if I can see anything obvious.

    --
    Kevin Winchester
    --
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  6. Re: hwclock failure in x86.git

    On Thu, 10 Jan 2008 17:13:51 -0800
    "H. Peter Anvin" wrote:

    > Kevin Winchester wrote:
    > > H. Peter Anvin wrote:
    > >> Kevin Winchester wrote:
    > >>> My first time building and booting the mm branch of x86.git was pretty
    > >>> successful. The only error I noticed was the following in my dmesg:
    > >>>
    > >>> hwclock[622] general protection ip:804b226 sp:bff43e30 error:0
    > >>>
    > >>> I'm not sure exactly how to debug this. I could bisect, but there seems
    > >>> to be some useful debug information in there, so there might be
    > >>> something better to try first.
    > >>>
    > >> That's a userspace IP; it implies the userspace hwclock binary did
    > >> something bad, or the kernel didn't permit it to do something it should
    > >> have. The best thing to do would probably to strace hwclock and see
    > >> what it did when it died.
    > >>

    > >
    > > Unfortunately, but the time I can get a chance to run hwclock, the
    > > problem seems to have fixed itself. I tried booting into single user
    > > mode, but `/etc/init.d/hwclock.sh restart` succeeds once I have my prompt.
    > >

    >
    > The other thing you can do is to download the debug information and
    > source code for hwclock from your particular distro, and find out
    > exactly what operation inside the hwclock binary is triggering the segfault.
    >
    > The only other option is to bisect.
    >


    The first thing I notice about the path is that ioport_32.c and the unified ioport.c use __clear_bit,
    while ioport_64.c uses clear_bit.

    From include/asm-x86/bitops.h:

    static inline void clear_bit(int nr, volatile void *addr)
    {
    asm volatile(LOCK_PREFIX "btr %1,%0"
    : ADDR
    : "Ir" (nr));
    }

    static inline void __clear_bit(int nr, volatile void *addr)
    {
    asm volatile("btr %1,%0" : ADDR : "Ir" (nr));
    }

    so it looks like we removed a lock prefix for the 64-bit case. Was that intentional? Since I'm building for 32-bit, I'm not sure why I was affected, so maybe my problem is different. Ingo, didn't you have a script somewhere to test the before and after of unification patches (or am I remembering something else)?

    commit 4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b
    Author: mboton@gmail.com
    Date: Wed Jan 9 13:31:11 2008 +0100

    x86: ioport_{32|64}.c unification

    ioport_{32|64}.c unification.

    This patch unifies the code from the ioport_32.c and ioport_64.c files.

    Tested and working fine with i386 and x86_64 kernels.

    Signed-off-by: Miguel Botón
    Signed-off-by: Ingo Molnar
    Signed-off-by: Thomas Gleixner

    diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
    index 8b4a8de..91a1795 100644
    --- a/arch/x86/kernel/Makefile
    +++ b/arch/x86/kernel/Makefile
    @@ -10,7 +10,7 @@ CFLAGS_vsyscall_64.o := $(PROFILING) -g0

    obj-y := process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
    obj-y += traps_$(BITS).o irq_$(BITS).o
    -obj-y += time_$(BITS).o ioport_$(BITS).o ldt.o
    +obj-y += time_$(BITS).o ioport.o ldt.o
    obj-y += setup_$(BITS).o i8259_$(BITS).o
    obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
    obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
    diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
    new file mode 100644
    index 0000000..e723ff3
    --- /dev/null
    +++ b/arch/x86/kernel/ioport.c
    @@ -0,0 +1,150 @@
    +/*
    + * This contains the io-permission bitmap code - written by obz, with changes
    + * by Linus. 32/64 bits code unification by Miguel Botón.
    + */
    +
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +
    +/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
    +static void set_bitmap(unsigned long *bitmap, unsigned int base,
    + unsigned int extent, int new_value)
    +{
    + unsigned int i;
    +
    + for (i = base; i < base + extent; i++) {
    + if (new_value)
    + __set_bit(i, bitmap);
    + else
    + __clear_bit(i, bitmap);
    + }
    +}
    +
    +/*
    + * this changes the io permissions bitmap in the current task.
    + */
    +asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
    +{
    + struct thread_struct * t = &current->thread;
    + struct tss_struct * tss;
    + unsigned int i, max_long, bytes, bytes_updated;
    +
    + if ((from + num <= from) || (from + num > IO_BITMAP_BITS))
    + return -EINVAL;
    + if (turn_on && !capable(CAP_SYS_RAWIO))
    + return -EPERM;
    +
    + /*
    + * If it's the first ioperm() call in this thread's lifetime, set the
    + * IO bitmap up. ioperm() is much less timing critical than clone(),
    + * this is why we delay this operation until now:
    + */
    + if (!t->io_bitmap_ptr) {
    + unsigned long *bitmap = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
    +
    + if (!bitmap)
    + return -ENOMEM;
    +
    + memset(bitmap, 0xff, IO_BITMAP_BYTES);
    + t->io_bitmap_ptr = bitmap;
    + set_thread_flag(TIF_IO_BITMAP);
    + }
    +
    + /*
    + * do it in the per-thread copy and in the TSS ...
    + *
    + * Disable preemption via get_cpu() - we must not switch away
    + * because the ->io_bitmap_max value must match the bitmap
    + * contents:
    + */
    + tss = &per_cpu(init_tss, get_cpu());
    +
    + set_bitmap(t->io_bitmap_ptr, from, num, !turn_on);
    +
    + /*
    + * Search for a (possibly new) maximum. This is simple and stupid,
    + * to keep it obviously correct:
    + */
    + max_long = 0;
    + for (i = 0; i < IO_BITMAP_LONGS; i++)
    + if (t->io_bitmap_ptr[i] != ~0UL)
    + max_long = i;
    +
    + bytes = (max_long + 1) * sizeof(unsigned long);
    + bytes_updated = max(bytes, t->io_bitmap_max);
    +
    + t->io_bitmap_max = bytes;
    +
    +#ifdef CONFIG_X86_32
    + /*
    + * Sets the lazy trigger so that the next I/O operation will
    + * reload the correct bitmap.
    + * Reset the owner so that a process switch will not set
    + * tss->io_bitmap_base to IO_BITMAP_OFFSET.
    + */
    + tss->x86_tss.io_bitmap_base = INVALID_IO_BITMAP_OFFSET_LAZY;
    + tss->io_bitmap_owner = NULL;
    +#else
    + /* Update the TSS: */
    + memcpy(tss->io_bitmap, t->io_bitmap_ptr, bytes_updated);
    +#endif
    +
    + put_cpu();
    +
    + return 0;
    +}
    +
    +/*
    + * sys_iopl has to be used when you want to access the IO ports
    + * beyond the 0x3ff range: to get the full 65536 ports bitmapped
    + * you'd need 8kB of bitmaps/process, which is a bit excessive.
    + *
    + * Here we just change the flags value on the stack: we allow
    + * only the super-user to do it. This depends on the stack-layout
    + * on system-call entry - see also fork() and the signal handling
    + * code.
    + */
    +#ifdef CONFIG_X86_32
    +asmlinkage long sys_iopl(unsigned long regsp)
    +{
    + volatile struct pt_regs *regs = (struct pt_regs *)®sp;
    + unsigned int level = regs->bx;
    + unsigned int old = (regs->flags >> 12) & 3;
    +
    + if (level > 3)
    + return -EINVAL;
    + /* Trying to gain more privileges? */
    + if (level > old) {
    + if (!capable(CAP_SYS_RAWIO))
    + return -EPERM;
    + }
    + regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
    +
    + return 0;
    +}
    +#else
    +asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs)
    +{
    + unsigned int old = (regs->flags >> 12) & 3;
    +
    + if (level > 3)
    + return -EINVAL;
    + /* Trying to gain more privileges? */
    + if (level > old) {
    + if (!capable(CAP_SYS_RAWIO))
    + return -EPERM;
    + }
    + regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
    +
    + return 0;
    +}
    +#endif
    diff --git a/arch/x86/kernel/ioport_32.c b/arch/x86/kernel/ioport_32.c
    deleted file mode 100644
    index 9295e01..0000000
    --- a/arch/x86/kernel/ioport_32.c
    +++ /dev/null
    @@ -1,129 +0,0 @@
    -/*
    - * This contains the io-permission bitmap code - written by obz, with changes
    - * by Linus.
    - */
    -
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -
    -/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
    -static void set_bitmap(unsigned long *bitmap, unsigned int base,
    - unsigned int extent, int new_value)
    -{
    - unsigned int i;
    -
    - for (i = base; i < base + extent; i++) {
    - if (new_value)
    - __set_bit(i, bitmap);
    - else
    - __clear_bit(i, bitmap);
    - }
    -}
    -
    -/*
    - * this changes the io permissions bitmap in the current task.
    - */
    -asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
    -{
    - struct thread_struct * t = &current->thread;
    - struct tss_struct * tss;
    - unsigned long i, max_long;
    -
    - if ((from + num <= from) || (from + num > IO_BITMAP_BITS))
    - return -EINVAL;
    - if (turn_on && !capable(CAP_SYS_RAWIO))
    - return -EPERM;
    -
    - /*
    - * If it's the first ioperm() call in this thread's lifetime, set the
    - * IO bitmap up. ioperm() is much less timing critical than clone(),
    - * this is why we delay this operation until now:
    - */
    - if (!t->io_bitmap_ptr) {
    - unsigned long *bitmap = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
    -
    - if (!bitmap)
    - return -ENOMEM;
    -
    - memset(bitmap, 0xff, IO_BITMAP_BYTES);
    - t->io_bitmap_ptr = bitmap;
    - set_thread_flag(TIF_IO_BITMAP);
    - }
    -
    - /*
    - * do it in the per-thread copy and in the TSS ...
    - *
    - * Disable preemption via get_cpu() - we must not switch away
    - * because the ->io_bitmap_max value must match the bitmap
    - * contents:
    - */
    - tss = &per_cpu(init_tss, get_cpu());
    -
    - set_bitmap(t->io_bitmap_ptr, from, num, !turn_on);
    -
    - /*
    - * Search for a (possibly new) maximum. This is simple and stupid,
    - * to keep it obviously correct:
    - */
    - max_long = 0;
    - for (i = 0; i < IO_BITMAP_LONGS; i++)
    - if (t->io_bitmap_ptr[i] != ~0UL)
    - max_long = i;
    -
    - t->io_bitmap_max = (max_long + 1) * sizeof(unsigned long);
    -
    - /*
    - * Sets the lazy trigger so that the next I/O operation will
    - * reload the correct bitmap.
    - * Reset the owner so that a process switch will not set
    - * tss->io_bitmap_base to IO_BITMAP_OFFSET.
    - */
    - tss->x86_tss.io_bitmap_base = INVALID_IO_BITMAP_OFFSET_LAZY;
    - tss->io_bitmap_owner = NULL;
    -
    - put_cpu();
    -
    - return 0;
    -}
    -
    -/*
    - * sys_iopl has to be used when you want to access the IO ports
    - * beyond the 0x3ff range: to get the full 65536 ports bitmapped
    - * you'd need 8kB of bitmaps/process, which is a bit excessive.
    - *
    - * Here we just change the flags value on the stack: we allow
    - * only the super-user to do it. This depends on the stack-layout
    - * on system-call entry - see also fork() and the signal handling
    - * code.
    - */
    -
    -asmlinkage long sys_iopl(unsigned long regsp)
    -{
    - volatile struct pt_regs *regs = (struct pt_regs *)®sp;
    - unsigned int level = regs->bx;
    - unsigned int old = (regs->flags >> 12) & 3;
    - struct thread_struct *t = &current->thread;
    -
    - if (level > 3)
    - return -EINVAL;
    - /* Trying to gain more privileges? */
    - if (level > old) {
    - if (!capable(CAP_SYS_RAWIO))
    - return -EPERM;
    - }
    -
    - t->iopl = level << 12;
    - regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | t->iopl;
    - set_iopl_mask(t->iopl);
    -
    - return 0;
    -}
    diff --git a/arch/x86/kernel/ioport_64.c b/arch/x86/kernel/ioport_64.c
    deleted file mode 100644
    index ff7514b..0000000
    --- a/arch/x86/kernel/ioport_64.c
    +++ /dev/null
    @@ -1,117 +0,0 @@
    -/*
    - * This contains the io-permission bitmap code - written by obz, with changes
    - * by Linus.
    - */
    -
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -#include
    -
    -/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
    -static void set_bitmap(unsigned long *bitmap, unsigned int base, unsigned int extent, int new_value)
    -{
    - int i;
    - if (new_value)
    - for (i = base; i < base + extent; i++)
    - __set_bit(i, bitmap);
    - else
    - for (i = base; i < base + extent; i++)
    - clear_bit(i, bitmap);
    -}
    -
    -/*
    - * this changes the io permissions bitmap in the current task.
    - */
    -asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
    -{
    - unsigned int i, max_long, bytes, bytes_updated;
    - struct thread_struct * t = &current->thread;
    - struct tss_struct * tss;
    - unsigned long *bitmap;
    -
    - if ((from + num <= from) || (from + num > IO_BITMAP_BITS))
    - return -EINVAL;
    - if (turn_on && !capable(CAP_SYS_RAWIO))
    - return -EPERM;
    -
    - /*
    - * If it's the first ioperm() call in this thread's lifetime, set the
    - * IO bitmap up. ioperm() is much less timing critical than clone(),
    - * this is why we delay this operation until now:
    - */
    - if (!t->io_bitmap_ptr) {
    - bitmap = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
    - if (!bitmap)
    - return -ENOMEM;
    -
    - memset(bitmap, 0xff, IO_BITMAP_BYTES);
    - t->io_bitmap_ptr = bitmap;
    - set_thread_flag(TIF_IO_BITMAP);
    - }
    -
    - /*
    - * do it in the per-thread copy and in the TSS ...
    - *
    - * Disable preemption via get_cpu() - we must not switch away
    - * because the ->io_bitmap_max value must match the bitmap
    - * contents:
    - */
    - tss = &per_cpu(init_tss, get_cpu());
    -
    - set_bitmap(t->io_bitmap_ptr, from, num, !turn_on);
    -
    - /*
    - * Search for a (possibly new) maximum. This is simple and stupid,
    - * to keep it obviously correct:
    - */
    - max_long = 0;
    - for (i = 0; i < IO_BITMAP_LONGS; i++)
    - if (t->io_bitmap_ptr[i] != ~0UL)
    - max_long = i;
    -
    - bytes = (max_long + 1) * sizeof(long);
    - bytes_updated = max(bytes, t->io_bitmap_max);
    -
    - t->io_bitmap_max = bytes;
    -
    - /* Update the TSS: */
    - memcpy(tss->io_bitmap, t->io_bitmap_ptr, bytes_updated);
    -
    - put_cpu();
    -
    - return 0;
    -}
    -
    -/*
    - * sys_iopl has to be used when you want to access the IO ports
    - * beyond the 0x3ff range: to get the full 65536 ports bitmapped
    - * you'd need 8kB of bitmaps/process, which is a bit excessive.
    - *
    - * Here we just change the flags value on the stack: we allow
    - * only the super-user to do it. This depends on the stack-layout
    - * on system-call entry - see also fork() and the signal handling
    - * code.
    - */
    -
    -asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs)
    -{
    - unsigned int old = (regs->flags >> 12) & 3;
    -
    - if (level > 3)
    - return -EINVAL;
    - /* Trying to gain more privileges? */
    - if (level > old) {
    - if (!capable(CAP_SYS_RAWIO))
    - return -EPERM;
    - }
    - regs->flags = (regs->flags &~ X86_EFLAGS_IOPL) | (level << 12);
    - return 0;
    -}

    --
    Kevin Winchester
    --
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  7. Re: hwclock failure in x86.git

    I'm no expert, but I happened to notice this go by.

    > The first thing I notice about the path is that ioport_32.c and the unified ioport.c use __clear_bit,
    > while ioport_64.c uses clear_bit.


    That doesn't seem too critical.

    > +#ifdef CONFIG_X86_32
    > +asmlinkage long sys_iopl(unsigned long regsp)
    > +{
    > + volatile struct pt_regs *regs = (struct pt_regs *)®sp;
    > + unsigned int level = regs->bx;
    > + unsigned int old = (regs->flags >> 12) & 3;
    > +
    > + if (level > 3)
    > + return -EINVAL;
    > + /* Trying to gain more privileges? */
    > + if (level > old) {
    > + if (!capable(CAP_SYS_RAWIO))
    > + return -EPERM;
    > + }
    > + regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
    > +
    > + return 0;
    > +}


    > -asmlinkage long sys_iopl(unsigned long regsp)
    > -{
    > - volatile struct pt_regs *regs = (struct pt_regs *)®sp;
    > - unsigned int level = regs->bx;
    > - unsigned int old = (regs->flags >> 12) & 3;
    > - struct thread_struct *t = &current->thread;
    > -
    > - if (level > 3)
    > - return -EINVAL;
    > - /* Trying to gain more privileges? */
    > - if (level > old) {
    > - if (!capable(CAP_SYS_RAWIO))
    > - return -EPERM;
    > - }
    > -
    > - t->iopl = level << 12;
    > - regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | t->iopl;
    > - set_iopl_mask(t->iopl);
    > -
    > - return 0;
    > -}


    Is it OK that we lost the different final steps of those two functions?
    It looks like someone might have missed the differing tail sections of
    the function when copying and pasting and updating just the start of the
    functions?

    Sorry if I missed why this is OK and intended, I didn't read very closely.

    - z
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  8. Re: hwclock failure in x86.git


    * Kevin Winchester wrote:

    > Bisect says...
    >
    > 4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b is first bad commit
    > commit 4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b
    > Author: mboton@gmail.com
    > Date: Wed Jan 9 13:31:11 2008 +0100
    >
    > x86: ioport_{32|64}.c unification


    thanks for tracking it down. I pulled that commit for now. But it would
    be nice to figure out what's going on there.

    Ingo
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  9. Re: hwclock failure in x86.git

    On Friday 11 January 2008 15:03:47 Ingo Molnar wrote:
    > * Kevin Winchester wrote:
    > > Bisect says...
    > >
    > > 4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b is first bad commit
    > > commit 4b5ea240a0c05ff90c4959fd91f0caec7b9bef1b
    > > Author: mboton@gmail.com
    > > Date: Wed Jan 9 13:31:11 2008 +0100
    > >
    > > x86: ioport_{32|64}.c unification

    >
    > thanks for tracking it down. I pulled that commit for now. But it would
    > be nice to figure out what's going on there.
    >
    > Ingo


    mmm, i'll try to reproduce it tomorrow and find a fix.

    thanks for notifying this problem.
    --
    Miguel Botón
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  10. [PATCH] x86: refactor ioport unification

    Refactor ioport unification to pull out common code.

    Cc: mboton@gmail.com
    Cc: Kevin Winchester
    Cc: Zach Brown
    Cc: Ingo Molnar
    Cc: "H. Peter Anvin"
    Cc: Thomas Gleixner
    Signed-off-by: Chris Wright
    ---
    Applies atop the ioport unification fix for 32-bit

    arch/x86/kernel/ioport.c | 40 +++++++++++++++++++++-------------------
    1 files changed, 21 insertions(+), 19 deletions(-)

    diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
    index be72d80..50e5e4a 100644
    --- a/arch/x86/kernel/ioport.c
    +++ b/arch/x86/kernel/ioport.c
    @@ -113,13 +113,9 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
    * on system-call entry - see also fork() and the signal handling
    * code.
    */
    -#ifdef CONFIG_X86_32
    -asmlinkage long sys_iopl(unsigned long regsp)
    +static int do_iopl(unsigned int level, struct pt_regs *regs)
    {
    - struct pt_regs *regs = (struct pt_regs *)®sp;
    - unsigned int level = regs->bx;
    unsigned int old = (regs->flags >> 12) & 3;
    - struct thread_struct *t = &current->thread;

    if (level > 3)
    return -EINVAL;
    @@ -128,25 +124,31 @@ asmlinkage long sys_iopl(unsigned long regsp)
    if (!capable(CAP_SYS_RAWIO))
    return -EPERM;
    }
    - t->iopl = level << 12;
    regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
    - set_iopl_mask(t->iopl);
    +
    return 0;
    }
    -#else
    -asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs)
    +
    +#ifdef CONFIG_X86_32
    +asmlinkage long sys_iopl(unsigned long regsp)
    {
    - unsigned int old = (regs->flags >> 12) & 3;
    + struct pt_regs *regs = (struct pt_regs *)®sp;
    + unsigned int level = regs->bx;
    + struct thread_struct *t = &current->thread;
    + int rc;

    - if (level > 3)
    - return -EINVAL;
    - /* Trying to gain more privileges? */
    - if (level > old) {
    - if (!capable(CAP_SYS_RAWIO))
    - return -EPERM;
    - }
    - regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
    + rc = do_iopl(level, regs);
    + if (rc < 0)
    + goto out;

    - return 0;
    + t->iopl = level << 12;
    + set_iopl_mask(t->iopl);
    +out:
    + return rc;
    +}
    +#else
    +asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs)
    +{
    + return do_iopl(level, regs);
    }
    #endif
    --
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  11. [PATCH] x86: fix ioport unification on 32-bit [was: Re: hwclock failure in x86.git]

    * Ingo Molnar (mingo@elte.hu) wrote:
    > thanks for tracking it down. I pulled that commit for now. But it would
    > be nice to figure out what's going on there.


    Zach was right. The unification was broken for 32-bit; it was missing
    the actual pushf/popf EFLAGS manipluation (set_iopl_mask()) and would've
    broken task switching between processes w/ different iopl in paravirt
    guests too. 64-bit sys_iopl just does pt_regs->flags modification and
    lets syscall/sysret plus ptregscall sync and do EFLAGS update.

    Also, use of volatile looks like leftover cruft.

    This patch in on top of Miguel's (can respin to standalone if that's better).
    Tested (on both 32 and 64-bit) with simple:

    #include
    #include

    main()
    {
    if (iopl(3) == 0)
    asm ("cli\nsti\n":;
    }

    thanks,
    -chris
    --

    From: Chris Wright
    Subject: [PATCH] x86: fix ioport unification on 32-bit

    ioport unification was broken for 32-bit; it was missing
    the acutal pushf/popf EFLAGS manipulation (set_iopl_mask()).
    Also, use of volatile looks like leftover cruft.

    Cc: mboton@gmail.com
    Cc: Kevin Winchester
    Cc: Zach Brown
    Cc: Ingo Molnar
    Cc: "H. Peter Anvin"
    Cc: Thomas Gleixner
    Signed-off-by: Chris Wright
    ---
    arch/x86/kernel/ioport.c | 6 ++++--
    1 files changed, 4 insertions(+), 2 deletions(-)

    diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
    index e723ff3..be72d80 100644
    --- a/arch/x86/kernel/ioport.c
    +++ b/arch/x86/kernel/ioport.c
    @@ -116,9 +116,10 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
    #ifdef CONFIG_X86_32
    asmlinkage long sys_iopl(unsigned long regsp)
    {
    - volatile struct pt_regs *regs = (struct pt_regs *)®sp;
    + struct pt_regs *regs = (struct pt_regs *)®sp;
    unsigned int level = regs->bx;
    unsigned int old = (regs->flags >> 12) & 3;
    + struct thread_struct *t = &current->thread;

    if (level > 3)
    return -EINVAL;
    @@ -127,8 +128,9 @@ asmlinkage long sys_iopl(unsigned long regsp)
    if (!capable(CAP_SYS_RAWIO))
    return -EPERM;
    }
    + t->iopl = level << 12;
    regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
    -
    + set_iopl_mask(t->iopl);
    return 0;
    }
    #else
    --
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  12. Re: [PATCH] x86: fix ioport unification on 32-bit [was: Re: hwclock failure in x86.git]


    * Chris Wright wrote:

    > * Ingo Molnar (mingo@elte.hu) wrote:
    > > thanks for tracking it down. I pulled that commit for now. But it would
    > > be nice to figure out what's going on there.

    >
    > Zach was right. The unification was broken for 32-bit; it was missing
    > the actual pushf/popf EFLAGS manipluation (set_iopl_mask()) and
    > would've broken task switching between processes w/ different iopl in
    > paravirt guests too. 64-bit sys_iopl just does pt_regs->flags
    > modification and lets syscall/sysret plus ptregscall sync and do
    > EFLAGS update.
    >
    > Also, use of volatile looks like leftover cruft.
    >
    > This patch in on top of Miguel's (can respin to standalone if that's
    > better). [...]


    thanks, applied.

    Ingo
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  13. Re: [PATCH] x86: refactor ioport unification


    * Chris Wright wrote:

    > Refactor ioport unification to pull out common code.


    thanks, applied. Looks quite a bit more logical this way.

    Ingo
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