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RE: [Xen-devel] [xen-3.5][linux-pvops-2.6.31.6] Xen BUG at hpet.c:663 triggered by changeset #20430



Hi, Sander, can you please have a try to following patch?

The reason for this issue is,  in hpet_broadcast_enter(), it will return 
directly if timer_deadline==0 without setting the channel, while  
hpet_broadcast_exit() missed the checking.

As the timer_deadline is only changed in softirq context as per_cpu action, it 
will not be changed between hpet_broadcast_entry()/hpet_broadcast_exit(), the 
checking is safe.

We considered to use the num_present_cpu() instead of num_possible_cpu() in 
hpet_broadcast_init(), but that seems not so important, since it is already 
limited by HPET's channel number already.

--jyh

diff -r d62bede476cb xen/arch/x86/hpet.c
--- a/xen/arch/x86/hpet.c   Mon Nov 23 15:19:38 2009 +0000
+++ b/xen/arch/x86/hpet.c   Tue Nov 24 19:33:01 2009 +0800
@@ -660,6 +660,9 @@ void hpet_broadcast_exit(void)
     int cpu = smp_processor_id();
     struct hpet_event_channel *ch = per_cpu(cpu_bc_channel, cpu);

+    if (this_cpu(timer_deadline) == 0)
+        return;
+
     BUG_ON( !ch );

     spin_lock_irq(&ch->lock);



xen-devel-bounces@xxxxxxxxxxxxxxxxxxx wrote:
> Hello Yunhong,
>
> I was allready afraid it was only revealed by that changeset,
> 60 cpu's for free seems to good to be true :(
> Hope you can find it soon, it crashes the hypervisor
> frequently and fast (often right after boot).
> At least I didn't buy my null-modem cable and setup a serial
> console for nothing :-)
>
> Thx,
>
> --
> Sander
>
>
> Tuesday, November 24, 2009, 10:38:24 AM, you wrote:
>
>> Have a quick look on the code,
>
>> This should be caused by following code in
> hpet_broadcast_init(). Without changeset 20430, the
> num_possible_cpus() get 4 on your platform, and is 64 after the
> change.
>> I suspect this is a bug just revealed by #20430, I will have
> a deep look on the hpet logic and discuss with WeiGang to fix it.
>
>>         if ( num_hpets_used < num_possible_cpus() )         {
>>             hpet_attach_channel = hpet_attach_channel_share;
>>             hpet_detach_channel = hpet_detach_channel_share;
>>         }
>
>> Thanks
>> --jyh
>
>
>> Keir Fraser wrote:
>>> Cc'ing patch author (Yunhong Jiang).
>>>
>>> -- Keir
>>>
>>> On 20/11/2009 22:05, "Sander Eikelenboom" <linux@xxxxxxxxxxxxxx>
>>> wrote:
>>>
>>>>
>>>> It seems this bug is triggered by changeset #20430, although it
>>>> doesn't seem to change hpet.c, so the actual problem will probably
>>>> be elsewhere. #20429 is booting and working fine for me (at least
>>>> it doesn't give this bug). changesets #20430 up until tip not, i
>>>> can trigger this bug every time by compiling xen (make xen), this
>>>> makes it panic and reboot.
>>>>
>>>> --
>>>> Sander
>>>>
>>>>
>>>>
>>>> Friday, November 20, 2009, 12:03:59 PM, you wrote:
>>>>
>>>>> Hi All,
>>>>
>>>>> When booting, the system spontaneus reboots some but not all the
>>>>> times Serial console output appended.
>>>>
>>>>> --
>>>>> Sander
>>>>
>>>>> System:  intel Q9400, asus p5q-em do (intel Q45 chipset), 2GB ram
>>>>
>>>>
>>>>>  __  __            _____  ____                     _
>  _     _
>>>>>  \ \/ /___ _ __   |___ / | ___|    _   _ _ __  ___| |_ __ _| |__ |
>>>>>   | ___ \  // _ \ '_ \    |_ \ |___ \ __| | | | '_ \/ __| __/ _`
>>>>>   '_ \| |/ _ \ /  \  __/ | | |  ___) | ___) |__| |_| | | | \__ \
>>>>>  || (_| _) | |  __/ /_/\_\___|_| |_| |____(_)____/    \__,_|_|
>>>>> _|___/\__\__,_|_.__/|_|\___|
>>>>>
>>>>> (XEN) Xen version 3.5-unstable (root@) (gcc version 4.3.2 (Debian
>>>>> 4.3.2-1.1) ) T hu Nov 19 08:37:49 CET 2009
>>>>> (XEN) Latest ChangeSet: Sat Nov 14 10:32:59 2009 +0000
>>>>> 20453:bec27eb6f72c (XEN) Command line: loglvl=all loglvl_guest=all
>>>>> dom0_mem=512M com1=115200,8n1 co nsole=com1
>>>>> (XEN) Video information:
>>>>> (XEN)  VGA is text mode 80x25, font 8x16
>>>>> (XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
>>>>> (XEN)  EDID info not retrieved because of reasons unknown (XEN)
>>>>> Disc information: (XEN)  Found 1 MBR signatures
>>>>> (XEN)  Found 1 EDD information structures
>>>>> (XEN) Xen-e820 RAM map:
>>>>> (XEN)  0000000000000000 - 000000000009fc00 (usable)
>>>>> (XEN)  000000000009fc00 - 00000000000a0000 (reserved)
>>>>> (XEN)  00000000000e4000 - 0000000000100000 (reserved)
>>>>> (XEN)  0000000000100000 - 000000007ee70000 (usable)
>>>>> (XEN)  000000007ee70000 - 000000007ee7e000 (ACPI data)
>>>>> (XEN)  000000007ee7e000 - 000000007eed0000 (ACPI NVS)
>>>>> (XEN)  000000007eed0000 - 000000007ef00000 (reserved)
>>>>> (XEN)  00000000fed00000 - 00000000fed01100 (reserved)
>>>>> (XEN)  00000000fed02000 - 00000000fed14c00 (reserved)
>>>>> (XEN)  00000000fed20000 - 00000000fed40000 (reserved)
>>>>> (XEN)  00000000fee00000 - 00000000fee01000 (reserved)
>>>>> (XEN)  00000000ffe00000 - 0000000100000000 (reserved)
>>>>> (XEN) System RAM: 2000MB (2048816kB)
>>>>> (XEN) ACPI: RSDP 000FB080, 0024 (r2 ACPIAM)
>>>>> (XEN) ACPI: XSDT 7EE70100, 0064 (r1 A_M_I_ OEMXSDT 5000927 MSFT
>>>>> 97) (XEN) ACPI: FACP 7EE70290, 00F4 (r3 A_M_I_ OEMFACP 5000927
>>>>> MSFT 97) (XEN) ACPI: DSDT 7EE70440, 841F (r1  A1065 A1065000 0
>>>>> INTL 20060113) (XEN) ACPI: FACS 7EE7E000, 0040
>>>>> (XEN) ACPI: APIC 7EE70390, 006C (r1 A_M_I_ OEMAPIC 5000927 MSFT
>>>>> 97) (XEN) ACPI: MCFG 7EE70400, 003C (r1 A_M_I_ OEMMCFG 5000927
>>>>> MSFT 97) (XEN) ACPI: OEMB 7EE7E040, 0089 (r1 A_M_I_ AMI_OEM
>>>>> 5000927 MSFT 97) (XEN) ACPI: HPET 7EE78860, 0038 (r1 A_M_I_
>>>>> OEMHPET 5000927 MSFT 97) (XEN) ACPI: GSCI 7EE7E0D0, 2024 (r1
>>>>> A_M_I_ GMCHSCI 5000927 MSFT 97) (XEN) ACPI: DMAR 7EE80100, 0070
>>>>> (r1    AMI  OEMDMAR 1 MSFT 97) (XEN) ACPI: SSDT 7EE810E0, 0A7C
>>>>> (r1 DpgPmm    CpuPm 12 INTL 20060113) (XEN) NUMA turned off (XEN)
>>>>> Faking a node at 0000000000000000-000000007ee70000 (XEN) Domain
>>>>> heap initialised (XEN) found SMP MP-table at 000ff780 (XEN) DMI
>>>>> present. (XEN) Using APIC driver default
>>>>> (XEN) ACPI: PM-Timer IO Port: 0x808
>>>>> (XEN) ACPI: ACPI SLEEP INFO: pm1x_cnt[804,0], pm1x_evt[800,0]
>>>>> (XEN) ACPI:                  wakeup_vec[7ee7e00c], vec_size[20]
>>>>> (XEN) ACPI: Local APIC address 0xfee00000
>>>>> (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
>>>>> (XEN) Processor #0 7:7 APIC version 20
>>>>> (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
>>>>> (XEN) Processor #1 7:7 APIC version 20
>>>>> (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x02] enabled)
>>>>> (XEN) Processor #2 7:7 APIC version 20
>>>>> (XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x03] enabled)
>>>>> (XEN) Processor #3 7:7 APIC version 20
>>>>> (XEN) ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
>>>>> (XEN) IOAPIC[0]: apic_id 4, version 32, address 0xfec00000, GSI
>>>>> 0-23 (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl
>>>>> dfl) (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high
>>>>> level) (XEN) ACPI: IRQ0 used by override.
>>>>> (XEN) ACPI: IRQ2 used by override.
>>>>> (XEN) ACPI: IRQ9 used by override.
>>>>> (XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
>>>>> (XEN) ACPI: HPET id: 0x8086a701 base: 0xfed00000
>>>>> (XEN) PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 -
>>>>> 255 (XEN) PCI: Not using MMCONFIG.
>>>>> (XEN) Using ACPI (MADT) for SMP configuration information
>>>>> (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN)
>>>>> Initializing CPU#0 (XEN) Detected 2666.415 MHz processor.
>>>>> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>>>>> (XEN) CPU: L2 cache: 3072K
>>>>> (XEN) CPU: Physical Processor ID: 0
>>>>> (XEN) CPU: Processor Core ID: 0
>>>>> (XEN) VMX: Supported advanced features:
>>>>> (XEN)  - APIC MMIO access virtualisation
>>>>> (XEN)  - APIC TPR shadow
>>>>> (XEN)  - Virtual NMI
>>>>> (XEN)  - MSR direct-access bitmap
>>>>> (XEN) HVM: VMX enabled
>>>>> (XEN) xsave_init: cpu0: cntxt_max_size: 0x240 and states:
>>>>> 00000000:00000003 (XEN) xsave_init: using cntxt_size: 0x240 and
>>>>> states: 00000000:00000003 (XEN) Intel machine check reporting
>>>>> enabled on CPU#0. (XEN) CPU0: Thermal monitoring enabled (TM2)
>>>>> (XEN) CMCI: CPU0 has no CMCI support
>>>>> (XEN) I/O virtualisation disabled
>>>>> (XEN) CPU0: Intel(R) Core(TM)2 Quad CPU    Q9400  @ 2.66GHz
>>>>> stepping 0a (XEN) Booting processor 1/1 eip 8c000
>>>>> (XEN) Initializing CPU#1
>>>>> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>>>>> (XEN) CPU: L2 cache: 3072K
>>>>> (XEN) CPU: Physical Processor ID: 0
>>>>> (XEN) CPU: Processor Core ID: 1
>>>>> (XEN) xsave_init: cpu1: cntxt_max_size: 0x240 and states:
>>>>> 00000000:00000003 (XEN) Intel machine check reporting enabled on
>>>>> CPU#1. (XEN) CPU1: Thermal monitoring enabled (TM2)
>>>>> (XEN) CMCI: CPU1 has no CMCI support
>>>>> (XEN) CPU1: Intel(R) Core(TM)2 Quad CPU    Q9400  @ 2.66GHz
>>>>> stepping 0a (XEN) Booting processor 2/2 eip 8c000
>>>>> (XEN) Initializing CPU#2
>>>>> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>>>>> (XEN) CPU: L2 cache: 3072K
>>>>> (XEN) CPU: Physical Processor ID: 0
>>>>> (XEN) CPU: Processor Core ID: 2
>>>>> (XEN) xsave_init: cpu2: cntxt_max_size:0x240 and states:
>>>>> 00000000:00000003 (XEN) Intel machine check reporting enabled on
>>>>> CPU#2. (XEN) CPU2: Thermal monitoring enabled (TM2)
>>>>> (XEN) CMCI: CPU2 has no CMCI support
>>>>> (XEN) CPU2: Intel(R) Core(TM)2 Quad CPU    Q9400  @ 2.66GHz
>>>>> stepping 0a (XEN) Booting processor 3/3 eip 8c000
>>>>> (XEN) Initializing CPU#3
>>>>> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
>>>>> (XEN) CPU: L2 cache: 3072K
>>>>> (XEN) CPU: Physical Processor ID: 0
>>>>> (XEN) CPU: Processor Core ID: 3
>>>>> (XEN) xsave_init: cpu3: cntxt_max_size: 0x240 and states:
>>>>> 00000000:00000003 (XEN) Intel machine check reporting enabled on
>>>>> CPU#3. (XEN) CPU3: Thermal monitoring enabled (TM2)
>>>>> (XEN) CMCI: CPU3 has no CMCI support
>>>>> (XEN) CPU3: Intl(R) Core(TM)2 Quad CPU    Q9400  @ 2.66GHz
>>>>> stepping 0a (XEN) Total of 4 processors activated.
>>>>> (XEN) ENABLING IO-APIC IRQs
>>>> (XEN)  ->> Using new ACK method
>>>>> (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
>>>>> (XEN) checking TSC synchronization across 4 CPUs: passed.
>>>>> (XEN) Platform timer is 14.318MHz HPET
>>>>> (XEN) microcode.c:73:d32767 microcode: CPU1 resumed
>>>>> (XEN) microcode.c:73:d32767 microcode: CPU2 resumed (XEN) Brought
>>>>> up 4 CPUs (XEN) microcode.c:73:d32767 microcode: CPU3 resumed
>>>>> (XEN) HPET: 8 timers in total, 8 timers will be used for broadcast
>>>>> (XEN) ACPI sleep modes: S3 (XEN) mcheck_poll: Machine check
>>>>> polling timer started. (XEN) *** LOADING DOMAIN 0 ***
>>>>> (XEN) elf_parse_binary: phdr: paddr=0x1000000 memsz=0x821000
>>>>> (XEN) elf_parse_binary: phdr: paddr=0x1821000 memsz=0xe57f8
>>>>> (XEN) elf_parse_binary: phdr: paddr=0x1907000 memsz=0x888
>>>>> (XEN) elf_parse_binary: phdr: paddr=0x1908000 memsz=0x15860
>>>>> (XEN) elf_parse_binary: phdr: paddr=0x191d860 memsz=0x1a57a0
>>>>> (XEN) elf_parse_binary: memory: 0x1000000 -> 0x1ac3000
>>>>> (XEN) elf_xen_parse_note: GUEST_OS = "linux"
>>>>> (XEN) elf_xen_parse_note: GUEST_VERSION = "2.6"
>>>>> (XEN) elf_xen_parse_note: XEN_VERSION = "xen-3.0"
>>>>> (XEN) elf_xen_parse_note: VIRT_BASE = 0xffffffff80000000
>>>>> (XEN) elf_xen_parse_note: ENTRY = 0xffffffff8191da60
>>>>> (XEN) elf_xen_parse_note: HYPERCALL_PAGE = 0xffffffff81009000
>>>>> (XEN) elf_xen_parse_note: FEATURES =
>>>>> "!writable_page_tables|pae_pgdir_above_4gb"
>>>>> (XEN) elf_xen_parse_note: PAE_MODE = "yes"
>>>>> (XEN) elf_xen_parse_note: LOADER = "generic"
>>>>> (XEN) elf_xen_parse_note: unknown xen elf note (0xd)
>>>>> (XEN) elf_xen_parse_note: SUSPEND_CANCEL = 0x1
>>>>> (XEN) elf_xen_parse_note: HV_START_LOW = 0xffff800000000000
>>>>> (XEN) elf_xen_parse_note: PADDR_OFFSET = 0x0
>>>>> (XEN) elf_xen_addr_calc_check: addresses:
>>>>> (XEN)     virt_base        = 0xffffffff80000000
>>>>> (XEN)     elf_paddr_offset = 0x0
>>>>> (XEN)     virt_offset      = 0xffffffff80000000
>>>>> (XEN)     virt_kstart      = 0xffffffff81000000
>>>>> (XEN)     virt_kend        = 0xffffffff81ac3000
>>>>> (XEN)     virt_entry       = 0xffffffff8191da60
>>>>> (XEN)     p2m_base         = 0xffffffffffffffff
>>>>> (XEN)  Xen  kernel: 64-bit, lsb, compat32
>>>>> (XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1ac3000
>>>>> (XEN) PHYSICAL MEMORY ARRANGEMENT:
>>>>> (XEN)  Dom0 alloc.:   0000000074000000->0000000078000000 (114688
>>>>> pages to be all ocated) (XEN) VIRTUAL MEMORY ARRANGEMENT:
>>>>> (XEN)  Loaded kernel: ffffffff81000000->ffffffff81ac3000
>>>>> (XEN)  Init. ramdisk: ffffffff81ac3000->ffffffff82172a00
>>>>> (XEN)  Phys-Mach map: ffffffff82173000->ffffffff82273000
>>>>> (XEN)  Start info:    ffffffff82273000->ffffffff822734b4
>>>>> (XEN)  Page tables:   ffffffff82274000->ffffffff82289000
>>>>> (XEN)  Boot stack:    ffffffff82289000->ffffffff8228a000
>>>>> (XEN)  TOTAL:         ffffffff80000000->ffffffff82400000
>>>>> (XEN)  ENTRY ADDRESS: ffffffff8191da60
>>>>> (XEN) Dom0 has maximum 4 VCPUs
>>>>> (XEN) elf_load_binary: phdr 0 at 0xffffffff81000000 ->
>>>>> 0xffffffff81821000 (XEN) elf_load_binary: phdr 1 at
>>>>> 0xffffffff81821000 -> 0xffffffff819067f8 (XEN) elf_load_binary:
>>>>> phdr 2 at 0xffffffff81907000 -> 0xffffffff81907888 (XEN)
>>>>> elf_load_binary: phdr 3 at 0xffffffff81908000 ->
>>>>> 0xffffffff8191d860 (XEN) elf_load_binary: phdr 4 at
>>>>> 0xffffffff8191d860 -> 0xffffffff81998000 (XEN) Scrubbing Free
>>>>> RAM: ..............done. (XEN) Xen trace buffers: disabled (XEN)
>>>>> Std. Loglevel: All (XEN) Guest Loglevel: All (XEN) *** Serial
>>>>> input -> DOM0 (type 'CTRL-a' three times to switch input to Xen )
>>>>> (XEN) Freed 156kB init memory.
>>>>> mapping kernel into physical memory
>>>>> Xen: setup ISA identity maps
>>>>> about to get started...
>>>>> (XEN) io_apic.c:2251:
>>>>> (XEN) ioapic_guest_write: apic=0, pin=0, irq=0
>>>>> (XEN) ioapic_guest_write: new_entry=00010900
>>>>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>>>>> IRQ! (XEN) io_apic.c:2251: (XEN) ioapic_guest_write: apic=0,
>>>>> pin=2, irq=0 (XEN) ioapic_guest_write: new_entry=00010900
>>>>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>>>>> IRQ! (XEN) irq.c:1444: dom0: pirq 0 or irq 3 already mapped (XEN)
>>>>> io_apic.c:2251: (XEN) ioapic_guest_write: apic=0, pin=4, irq=4
>>>>> (XEN) ioapic_guest_write: new_entry=00010900
>>>>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>>>>> IRQ! (XEN) irq.c:1444: dom0: pirq 0 or irq 5 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 6 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 7 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 8 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 9 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 10 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 11 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 12 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 13 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 14 already mapped
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 15 already mapped
>>>>> (XEN) allocated vector for irq:16
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 16 already mapped
>>>>> (XEN) allocated vector for irq:17
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 17 already mapped
>>>>> (XEN) allocated vector for irq:18
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 18 already mapped
>>>>> (XEN) allocated vector for irq:19
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 19 already mapped
>>>>> (XEN) allocated vector for irq:20
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 20 already mapped
>>>>> (XEN) allocated vector for irq:22
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 22 already mapped
>>>>> (XEN) allocated vector for irq:23
>>>>> (XEN) irq.c:1444: dom0: pirq 0 or irq 23 already mapped (XEN)
>>>>> io_apic.c:2251: (XEN) ioapic_guest_write: apic=0, pin=0, irq=0
>>>>> (XEN) ioapic_guest_write: new_entry=00000900
>>>>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>>>>> IRQ! (XEN) io_apic.c:2251: (XEN) ioapic_guest_write: apic=0,
>>>>> pin=4, irq=4 (XEN) ioapic_guest_write: new_entry=00000904
>>>>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>>>>> IRQ! (XEN) PCI add device 00:00.0 (XEN) PCI add device 00:01.0
>>>>> (XEN) PCI add device 00:03.0 (XEN) PCI add device 00:19.0
>>>>> (XEN) PCI add device 00:1e.0
>>>>> (XEN) PCI add device 00:1f.0
>>>>> (XEN) PCI add device 00:1f.2
>>>>> (XEN) PCI add device 00:1f.3
>>>>> (XEN) PCI add device 00:1f.5
>>>>> (XEN) PCI add device 01:00.0
>>>>> (XEN) PCI add device 01:00.1
>>>>> (XEN) io_apic.c:2251:
>>>>> (XEN) ioapic_guest_write: apic=0, pin=4, irq=4
>>>>> (XEN) ioapic_guest_write: new_entry=00000904
>>>>> (XEN) ioapic_guest_write: Attempt to modify IO-APIC pin for in-use
>>>>> IRQ! (XEN) Set CPU acpi_id(1) cpuid(0) Px State info: (XEN)
>>>>> _PPC: 0 (XEN) cpuid.MWAIT[.eax=40, .ebx=40, .ecx=3, .edx=22220]
>>>>> (XEN) Monitor-Mwait will be used to enter C-1 state
>>>>> (XEN) Set CPU acpi_id(1) cpuid(0) Px State info:
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PSS: state_count=3
>>>>> (XEN)   State0: 2670MHz 89000mW 10us 10us 0x81f 0x81f
>>>>> (XEN)   State1: 2336MHz 76000mW 10us 10us 0x71b 0x71b
>>>>> (XEN)   State2: 2003MHz 63000mW 10us 10us 0x616 0x616
>>>>> (XEN)   _PSD: num_entries=5 rev=0 domain=0 coord_type=254
>>>>> num_processors=4 (XEN)   _PPC: 0 (XEN) xen_pminfo:
>>>>> @acpi_cpufreq_cpu_init,HARDWARE addr space (XEN) CPU 0
>>>>> initialization completed (XEN) Set CPU acpi_id(2) cpuid(1) Px
>>>>> State info: (XEN)   _PPC: 0 (XEN) cpuid.MWAIT[.eax=40, .ebx=40,
>>>>> .ecx=3, .edx=22220] (XEN) Monitor-Mwait will be used to enter C-1
>>>>> state (XEN) Set CPU acpi_id(2) cpuid(1) Px State info:
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PSS: state_count=3
>>>>> (XEN)   State0: 2670MHz 89000mW 10us 10us 0x81f 0x81f
>>>>> (XEN)   State1: 2336MHz 76000mW 10us 10us 0x71b 0x71b
>>>>> (XEN)   State2: 2003MHz 63000mW 10us 10us 0x616 0x616
>>>>> (XEN)   _PSD: num_entries=5 rev=0 domain=0 coord_type=254
>>>>> num_processors=4 (XEN)   _PPC: 0 (XEN) xen_pminfo:
>>>>> @acpi_cpufreq_cpu_init,HARDWARE addr space (XEN) CPU 1
>>>>> initialization completed (XEN) Set CPU acpi_id(3) cpuid(2) Px
>>>>> State info: (XEN)   _PPC: 0 (XEN) cpuid.MWAIT[.eax=40, .ebx=40,
>>>>> .ecx=3, .edx=22220] (XEN) Monitor-Mwait will be used to enter C-1
>>>>> state (XEN) Set CPU acpi_id(3) cpuid(2) Px State info:
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PSS: state_count=3
>>>>> (XEN)   State0: 2670MHz 89000mW 10us 10us 0x81f 0x81f
>>>>> (XEN)   State1: 2336MHz 76000mW 10us 10us 0x71b 0x71b
>>>>> (XEN)   State2: 2003MHz 63000mW 10us 10us 0x616 0x616
>>>>> (XEN)   _PSD: num_entries=5 rev=0 domain=0 coord_type=254
>>>>> num_processors=4 (XEN)   _PPC: 0 (XEN) xen_pminfo:
>>>>> @acpi_cpufreq_cpu_init,HARDWARE addr space (XEN) CPU 2
>>>>> initialization completed (XEN) Set CPU acpi_id(4) cpuid(3) Px
>>>>> State info: (XEN)   _PPC: 0 (XEN) cpuid.MWAIT[.eax=40, .ebx=40,
>>>>> .ecx=3, .edx=22220] (XEN) Monitor-Mwait will be used to enter C-1
>>>>> state (XEN) Set CPU acpi_id(4) cpuid(3) Px State info:
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PCT: descriptor=130, length=12, space_id=127,
>>>>> bit_width=0, bit_offset=0 , reserved=0, address=0
>>>>> (XEN)   _PSS: state_count=3
>>>>> (XEN)   State0: 2670MHz 89000mW 10us 10us 0x81f 0x81f
>>>>> (XEN)   State1: 2336MHz 76000mW 10us 10us 0x71b 0x71b
>>>>> (XEN)   State2: 2003MHz 63000mW 10us 10us 0x616 0x616
>>>>> (XEN)   _PSD: num_entries=5 rev=0 domain=0 coord_type=254
>>>>> num_processors=4 (XEN)   _PPC: 0 (XEN) xen_pminfo:
>>>>> @acpi_cpufreq_cpu_init,HARDWARE addr space (XEN) CPU 3
>>>>> initialization completed (XEN) Xen BUG at hpet.c:663
>>>>> (XEN) ----[ Xen-3.5-unstable  x86_64  debug=y  Not tainted ]----
>>>>> (XEN) CPU:    3 (XEN) RIP:    e008:[<ffff82c480189b81>]
>>>>> hpet_broadcast_exit+0x4b/0xf2 (XEN) RFLAGS: 0000000000010246
>>>>> CONTEXT: hypervisor (XEN) rax: ffff82c48025fa88   rbx:
>>>>> 0000000000000000   rcx: 0000000000000010 (XEN) rdx:
>>>>> 0000000000006000   rsi: 000000054583d5f5   rdi: ffff82c4802306b0
>>>>> (XEN) rbp: ffff83007ea37e30   rsp: ffff83007ea37e10   r8:
>>>>> 0000000000000004 (XEN) r9:  ffff83007ea68e68   r10:
>>>>> ffff83007ea68e68   r11: 0f0f0f0f0f0f0f0f (XEN) r12:
>>>>> 0000000000000003   r13: 0000000000006000   r14: ffff830076401830
>>>>> (XEN) r15: 0000000000916ce8   cr0: 000000008005003b   cr4:
>>>>> 00000000000026f0 (XEN) cr3: 000000007ecec000   cr2:
>>>>> 000000000046e320 (XEN) ds: 002b   es: 002b   fs: 0000   gs: 0000
>>>>> ss: e010 cs: e008 (XEN) Xen stack trace from rsp=ffff83007ea37e10:
>>>>> (XEN)    0000000000000002 ffff82c4802362a0 ffff8300764018c0
>>>>> ffff830076401830 (XEN)    ffff83007ea37ee0 ffff82c48018bbf1
>>>>> ffff83007ea37ea0 ffff82c48011fd9e (XEN)    ffff82c480265080
>>>>> 00916ce37ea37ed8 ffff82c48011cb6f ffff82c480265100 (XEN)
>>>>> ffff83007ea2e380 0000000000000003 ffff82c4802362a0
>>>>> 000000007ea37f28 (XEN)    0000000000000000 0000000000000000
>>>>> ffff83007ea37ee0 fffff83000000046 (XEN)    0000000000000003
>>>>> ffff83007ea37f28 ffff82c4802362a0 ffff83007ea37f28 (XEN)
>>>>> ffff82c48025fa00 ffff82c480236918 ffff83007ea37f20
>>>>> ffff82c48014ca00 (XEN) ffff83007cefa000 ffff83007ea3e000
>>>>> 0000000000000003 ffff83007cefa000 (XEN)    00000002314e8a32
>>>>> ffff82c480265080 ffff83007ea37dc8 0000000000000000 (XEN)
>>>>> 0000000000000000 0000000000000000 0000000000000000
>>>>> ffff88001f89bf10 (XEN)    ffffffff818fe0a8 0000000000000246
>>>>> 000000000000000c ffff88001f89be30 (XEN) 0000000000000000
>>>>> 0000000000000000 ffffffff810093aa 0000000000000000 (XEN)
>>>>> 00000000deadbeef 00000000deadbeef 0000010000000000
>>>>> ffffffff810093aa (XEN)    000000000000e033 0000000000000246
>>>>> ffff88001f89bef8 000000000000e02b (XEN)    5555555555555555
>>>>> 5555555555555555 5555555555555555 5555555555555555 (XEN)
>>>>> 5555555500000003 ffff83007ea3e000 (XEN) Xen call trace: (XEN)
>>>>> [<ffff82c480189b81>] hpet_broadcast_exit+0x4b/0xf2 (XEN)
>>>>> [<ffff82c48018bbf1>] acpi_processor_idle+0x5f6/0x6b5 (XEN)
>>>>> [<ffff82c48014ca00>] idle_loop+0x89/0x93 (XEN) (XEN) (XEN)
>>>>> **************************************** (XEN) Panic on CPU 3:
>>>>> (XEN) Xen BUG at hpet.c:663 (XEN)
>>>>> **************************************** (XEN) (XEN) Reboot in
>>>>> five seconds...
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> host                   : xentest
>>>>> release                : 2.6.31.6
>>>>> version                : #1 SMP Fri Nov 20 02:18:08 CET 2009
>>>>> machine                : x86_64
>>>>> nr_cpus                : 4
>>>>> nr_nodes               : 1
>>>>> cores_per_socket       : 4
>>>>> threads_per_core       : 1
>>>>> cpu_mhz                : 2666
>>>>> hw_caps                :
>>>>>
>>>
> bfebfbff:20100800:00000000:00000940:0408e3fd:00000000:00000001:00000000
>>>>> virt_caps              : hvm
>>>>> total_memory           : 2000
>>>>> free_memory            : 1496
>>>>> node_to_cpu            : node0:0-3
>>>>> node_to_memory         : node0:1496
>>>>> node_to_dma32_mem      : node0:1496
>>>>> xen_major              : 3
>>>>> xen_minor              : 5
>>>>> xen_extra              : -unstable
>>>>> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p
>>>>> hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
>>>>> xen_scheduler          : credit
>>>>> xen_pagesize           : 4096
>>>>> platform_params        : virt_start=0xffff800000000000
>>>>> xen_changeset          : Sat Nov 14 10:32:59 2009 +0000
>>>>> 20453:bec27eb6f72c xen_commandline        : loglvl=all
>>>>> loglvl_guest=all dom0_mem=512M com1=115200,8n1 console=com1
>>>>> cc_compiler            : gcc version 4.3.2 (Debian 4.3.2-1.1)
>>>>> cc_compile_by          : root cc_compile_domain      :
>>>>> cc_compile_date        : Thu Nov 19 08:37:49 CET 2009
>>>>> xend_config_format     : 4
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Best regards,
>>>>  Sander                            mailto:linux@xxxxxxxxxxxxxx
>
>
>
> --
> Best regards,
> Sander                            mailto:linux@xxxxxxxxxxxxxx
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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