Jeff Mahoney wrote: > Hi all - > > I saw this while booting 2.6.30-rc1, -rc2, and today's git, on one of > my development nodes. This output is with apic=debug. With noapic, > it still hung. Both outputs follow. > > git bisect leads to commit 8d6f0c8214928f7c5083dd54ecb69c5d615b516e, > but I'm not seeing anything obvious there. Backing just that change > out doesn't fix it. > > -Jeff > > apic=debug: > > [ 0.000000] Initializing cgroup subsys cpuset > [ 0.000000] Initializing cgroup subsys cpu > [ 0.000000] Linux version 2.6.30-rc2-vanilla (jeffm@sled2) (gcc version 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux) ) #22 SMP Thu Apr 16 17:25:38 EDT 2009 > [ 0.000000] Command line: root=/dev/disk/by-id/ata-ST3120813AS_3LS0FAGL-part10 eth0=dhcp console=tty0 console=ttyS0,115200 resume=/dev/disk/by-id/ata-ST3120813AS_3LS0FAGL-part6 splash=silent showopts vga=0x314 apic=debug > [ 0.000000] KERNEL supported cpus: > [ 0.000000] Intel GenuineIntel > [ 0.000000] AMD AuthenticAMD > [ 0.000000] Centaur CentaurHauls > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) > [ 0.000000] BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) > [ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) > [ 0.000000] BIOS-e820: 0000000000100000 - 00000000f7ff0000 (usable) > [ 0.000000] BIOS-e820: 00000000f7ff0000 - 00000000f7fff000 (ACPI data) > [ 0.000000] BIOS-e820: 00000000f7fff000 - 00000000f8000000 (ACPI NVS) > [ 0.000000] BIOS-e820: 00000000ff780000 - 0000000100000000 (reserved) > [ 0.000000] BIOS-e820: 0000000100000000 - 0000000200000000 (usable) > [ 0.000000] DMI 2.3 present. > [ 0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it. > [ 0.000000] last_pfn = 0x200000 max_arch_pfn = 0x100000000 > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > [ 0.000000] last_pfn = 0xf7ff0 max_arch_pfn = 0x100000000 > [ 0.000000] Scanning 0 areas for low memory corruption > [ 0.000000] modified physical RAM map: > [ 0.000000] modified: 0000000000000000 - 0000000000010000 (reserved) > [ 0.000000] modified: 0000000000010000 - 000000000009fc00 (usable) > [ 0.000000] modified: 000000000009fc00 - 00000000000a0000 (reserved) > [ 0.000000] modified: 00000000000e0000 - 0000000000100000 (reserved) > [ 0.000000] modified: 0000000000100000 - 00000000f7ff0000 (usable) > [ 0.000000] modified: 00000000f7ff0000 - 00000000f7fff000 (ACPI data) > [ 0.000000] modified: 00000000f7fff000 - 00000000f8000000 (ACPI NVS) > [ 0.000000] modified: 00000000ff780000 - 0000000100000000 (reserved) > [ 0.000000] modified: 0000000100000000 - 0000000200000000 (usable) > [ 0.000000] init_memory_mapping: 0000000000000000-00000000f7ff0000 > [ 0.000000] init_memory_mapping: 0000000100000000-0000000200000000 > [ 0.000000] RAMDISK: 37a0b000 - 37fefed3 > [ 0.000000] ACPI: RSDP 00000000000f6d40 00024 (v02 ACPIAM) > [ 0.000000] ACPI: XSDT 00000000f7ff0100 00054 (v01 A M I OEMXSDT 06000514 MSFT 00000097) > [ 0.000000] ACPI: FACP 00000000f7ff0281 000F4 (v01 A M I OEMFACP 06000514 MSFT 00000097) > [ 0.000000] ACPI: DSDT 00000000f7ff0410 03591 (v01 0AAAA 0AAAA001 00000001 INTL 02002026) > [ 0.000000] ACPI: FACS 00000000f7fff000 00040 > [ 0.000000] ACPI: APIC 00000000f7ff0380 00084 (v01 A M I OEMAPIC 06000514 MSFT 00000097) > [ 0.000000] ACPI: OEMB 00000000f7fff040 00041 (v01 A M I OEMBIOS 06000514 MSFT 00000097) > [ 0.000000] ACPI: SRAT 00000000f7ff39b0 00110 (v01 A M I OEMSRAT 06000514 MSFT 00000097) > [ 0.000000] ACPI: HPET 00000000f7ff3ac0 00038 (v01 A M I OEMHPET 06000514 MSFT 00000097) > [ 0.000000] ACPI: ASF! 00000000f7ff3b00 00086 (v01 AMIASF AMDSTRET 00000001 INTL 02002026) > [ 0.000000] SRAT: PXM 0 -> APIC 0 -> Node 0 > [ 0.000000] SRAT: PXM 0 -> APIC 1 -> Node 0 > [ 0.000000] SRAT: PXM 1 -> APIC 2 -> Node 1 > [ 0.000000] SRAT: PXM 1 -> APIC 3 -> Node 1 > [ 0.000000] SRAT: Node 0 PXM 0 100000-f8000000 > [ 0.000000] SRAT: Node 1 PXM 1 100000000-200000000 > [ 0.000000] SRAT: Node 0 PXM 0 100000000-100000000 > [ 0.000000] SRAT: Node 0 PXM 0 0-9fc00 > [ 0.000000] Bootmem setup node 0 0000000000000000-0000000100000000 > [ 0.000000] NODE_DATA [000000000001c040 - 000000000003403f] > [ 0.000000] bootmap [0000000000035000 - 0000000000054fff] pages 20 > [ 0.000000] (9 early reservations) ==> bootmem [0000000000 - 0100000000] > [ 0.000000] #0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000] > [ 0.000000] #1 [0000006000 - 0000008000] TRAMPOLINE ==> [0000006000 - 0000008000] > [ 0.000000] #2 [0000200000 - 00009e0d9c] TEXT DATA BSS ==> [0000200000 - 00009e0d9c] > [ 0.000000] #3 [0037a0b000 - 0037fefed3] RAMDISK ==> [0037a0b000 - 0037fefed3] > [ 0.000000] #4 [000009d000 - 0000100000] BIOS reserved ==> [000009d000 - 0000100000] > [ 0.000000] #5 [00009e1000 - 00009e11ad] BRK ==> [00009e1000 - 00009e11ad] > [ 0.000000] #6 [0000010000 - 0000014000] PGTABLE ==> [0000010000 - 0000014000] > [ 0.000000] #7 [0000014000 - 0000018000] PGTABLE ==> [0000014000 - 0000018000] > [ 0.000000] #8 [0000018000 - 000001c040] MEMNODEMAP ==> [0000018000 - 000001c040] > [ 0.000000] Bootmem setup node 1 0000000100000000-0000000200000000 > [ 0.000000] NODE_DATA [0000000100000000 - 0000000100017fff] > [ 0.000000] bootmap [0000000100018000 - 0000000100037fff] pages 20 > [ 0.000000] (9 early reservations) ==> bootmem [0100000000 - 0200000000] > [ 0.000000] #0 [0000000000 - 0000001000] BIOS data page > [ 0.000000] #1 [0000006000 - 0000008000] TRAMPOLINE > [ 0.000000] #2 [0000200000 - 00009e0d9c] TEXT DATA BSS > [ 0.000000] #3 [0037a0b000 - 0037fefed3] RAMDISK > [ 0.000000] #4 [000009d000 - 0000100000] BIOS reserved > [ 0.000000] #5 [00009e1000 - 00009e11ad] BRK > [ 0.000000] #6 [0000010000 - 0000014000] PGTABLE > [ 0.000000] #7 [0000014000 - 0000018000] PGTABLE > [ 0.000000] #8 [0000018000 - 000001c040] MEMNODEMAP > [ 0.000000] Scan SMP from ffff880000000000 for 1024 bytes. > [ 0.000000] Scan SMP from ffff88000009fc00 for 1024 bytes. > [ 0.000000] Scan SMP from ffff8800000f0000 for 65536 bytes. > [ 0.000000] found SMP MP-table at [ffff8800000ff780] ff780 > [ 0.000000] mpc: fa3b0-fa50c > [ 0.000000] Zone PFN ranges: > [ 0.000000] DMA 0x00000010 -> 0x00001000 > [ 0.000000] DMA32 0x00001000 -> 0x00100000 > [ 0.000000] Normal 0x00100000 -> 0x00200000 > [ 0.000000] Movable zone start PFN for each node > [ 0.000000] early_node_map[3] active PFN ranges > [ 0.000000] 0: 0x00000010 -> 0x0000009f > [ 0.000000] 0: 0x00000100 -> 0x000f7ff0 > [ 0.000000] 1: 0x00100000 -> 0x00200000 > [ 0.000000] Detected use of extended apic ids on hypertransport bus > [ 0.000000] Detected use of extended apic ids on hypertransport bus > [ 0.000000] ACPI: PM-Timer IO Port: 0x1008 > [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) > [ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled) > [ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x02] enabled) > [ 0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x03] enabled) > [ 0.000000] ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0]) > [ 0.000000] IOAPIC[0]: apic_id 4, version 0, address 0xfec00000, GSI 0-23 > [ 0.000000] ACPI: IOAPIC (id[0x05] address[0xfebff000] gsi_base[24]) > [ 0.000000] IOAPIC[1]: apic_id 5, version 0, address 0xfebff000, GSI 24-27 > [ 0.000000] ACPI: IOAPIC (id[0x06] address[0xfebfe000] gsi_base[28]) > [ 0.000000] IOAPIC[2]: apic_id 6, version 0, address 0xfebfe000, GSI 28-31 > [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) > [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) > [ 0.000000] Using ACPI (MADT) for SMP configuration information > [ 0.000000] ACPI: HPET id: 0x102282a0 base: 0xfec01000 > [ 0.000000] SMP: Allowing 4 CPUs, 0 hotplug CPUs > [ 0.000000] mapped APIC to ffffffffff5fc000 (fee00000) > [ 0.000000] mapped IOAPIC to ffffffffff5fb000 (fec00000) > [ 0.000000] mapped IOAPIC to ffffffffff5fa000 (febff000) > [ 0.000000] mapped IOAPIC to ffffffffff5f9000 (febfe000) > [ 0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000 > [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e0000 > [ 0.000000] PM: Registered nosave memory: 00000000000e0000 - 0000000000100000 > [ 0.000000] PM: Registered nosave memory: 00000000f7ff0000 - 00000000f7fff000 > [ 0.000000] PM: Registered nosave memory: 00000000f7fff000 - 00000000f8000000 > [ 0.000000] PM: Registered nosave memory: 00000000f8000000 - 00000000ff780000 > [ 0.000000] PM: Registered nosave memory: 00000000ff780000 - 0000000100000000 > [ 0.000000] Allocating PCI resources starting at f8800000 (gap: f8000000:7780000) > [ 0.000000] NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:4 nr_node_ids:2 > [ 0.000000] PERCPU: Remapped at ffffc20000000000 with large pages, static data 71776 bytes > [ 0.000000] Built 2 zonelists in Node order, mobility grouping on. Total pages: 2033901 > [ 0.000000] Policy zone: Normal > [ 0.000000] Kernel command line: root=/dev/disk/by-id/ata-ST3120813AS_3LS0FAGL-part10 eth0=dhcp console=tty0 console=ttyS0,115200 resume=/dev/disk/by-id/ata-ST3120813AS_3LS0FAGL-part6 splash=silent showopts vga=0x314 apic=debug > [ 0.000000] Initializing CPU#0 > [ 0.000000] Experimental hierarchical RCU implementation. > [ 0.000000] Experimental hierarchical RCU init done. > [ 0.000000] NR_IRQS:4352 nr_irqs:576 > [ 0.000000] PID hash table entries: 4096 (order: 12, 32768 bytes) > [ 0.000000] Fast TSC calibration using PIT > [ 0.000000] Detected 2192.534 MHz processor. > [ 0.004000] Console: colour dummy device 80x25 > [ 0.004000] console [tty0] enabled > [ 0.004000] console [ttyS0] enabled > [ 0.004000] allocated 82575360 bytes of page_cgroup > [ 0.004000] please try cgroup_disable=memory option if you don't want > [ 0.004000] Checking aperture... > [ 0.004000] No AGP bridge found > [ 0.004000] Node 0: aperture @ 0 size 32 MB > [ 0.004000] Your BIOS doesn't leave a aperture memory hole > [ 0.004000] Please enable the IOMMU option in the BIOS setup > [ 0.004000] This costs you 64 MB of RAM > [ 0.004000] Mapping aperture over 65536 KB of RAM @ 20000000 > [ 0.004000] PM: Registered nosave memory: 0000000020000000 - 0000000024000000 > [ 0.004000] Memory: 7981076k/8388608k available (3350k kernel code, 131588k absent, 275944k reserved, 1936k data, 1544k init) > [ 0.004000] HPET: 3 timers in total, 0 timers will be used for per-cpu timer > [ 0.004010] Calibrating delay loop (skipped), value calculated using timer frequency.. 4385.06 BogoMIPS (lpj=8770136) > [ 0.008000] Security Framework initialized > [ 0.008000] SELinux: Disabled at boot. > [ 0.008000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) > [ 0.008000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) > [ 0.008000] Mount-cache hash table entries: 256 > [ 0.008000] Initializing cgroup subsys ns > [ 0.008000] Initializing cgroup subsys cpuacct > [ 0.008000] Initializing cgroup subsys memory > [ 0.008000] Initializing cgroup subsys devices > [ 0.008000] Initializing cgroup subsys freezer > [ 0.008000] Initializing cgroup subsys net_cls > [ 0.008000] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) > [ 0.008000] CPU: L2 Cache: 1024K (64 bytes/line) > [ 0.008000] CPU 0/0x0 -> Node 0 > [ 0.008000] CPU: Physical Processor ID: 0 > [ 0.008000] CPU: Processor Core ID: 0 > [ 0.008000] ACPI: Core revision 20090320 > [ 0.008000] Setting APIC routing to flat > [ 0.008000] Getting VERSION: 40010 > [ 0.008000] Getting VERSION: 40010 > [ 0.008000] Getting ID: 0 > [ 0.008000] Getting ID: ff000000 > [ 0.008000] Getting LVT0: 700 > [ 0.008000] Getting LVT1: 400 > [ 0.008000] enabled ExtINT on CPU#0 > [ 0.008000] ESR value before enabling vector: 0x00000004 after: 0x00000000 > [ 0.008000] ENABLING IO-APIC IRQs > [ 0.008000] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0 > [ 0.008000] ..MP-BIOS bug: 8254 timer not connected to IO-APIC > [ 0.008000] ...trying to set up timer (IRQ0) through the 8259A ... > [ 0.008000] ..... (found apic 0 pin 0) ... > [ 0.008000] ....... failed. > [ 0.008000] ...trying to set up timer as Virtual Wire IRQ... > [ 0.008000] ..... failed. > [ 0.008000] ...trying to set up timer as ExtINT IRQ... > [ 0.008000] ..... failed :(. > [ 0.008000] Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with apic=debug and send a report. Then try booting with the 'noapic' option. Hmmmmm. That somehow reminds me of what I thought I had to fix in the HPET emulation of QEMU just recently [1] - because of 2.6.30-rc's behavior. Could you try if writing 'delta' a second time makes any difference on that box? diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 648b3a2..523d72b 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -324,6 +324,7 @@ static void hpet_set_mode(enum clock_event_mode mode, HPET_TN_SETVAL | HPET_TN_32BIT; hpet_writel(cfg, HPET_Tn_CFG(timer)); hpet_writel((unsigned long) delta, HPET_Tn_CMP(timer)); + hpet_writel((unsigned long) delta, HPET_Tn_CMP(timer)); hpet_start_counter(); hpet_print_config(); break; Thanks, Jan [1] http://permalink.gmane.org/gmane.comp.emulators.qemu/41570