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Re: [Xen-devel] Xen 3.2.2 - Timer ISR/0: Time went backwards

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
From: "Christopher S. Aker" <caker@xxxxxxxxxxxx>
Date: Mon, 04 Aug 2008 15:18:42 -0400
Cc: xen devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Mon, 04 Aug 2008 12:19:06 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Keir Fraser wrote:

What sort of hardware?


http://www.supermicro.com/products/system/1U/6015/SYS-6015B-T+.cfm

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz
stepping        : 6
cpu MHz         : 2500.088
cache size      : 6144 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes

flags : fpu de tsc msr pae cx8 apic sep mtrr cmov pat clflushacpi mmx fxsr sse sse2 ss ht nx constant_tsc pni

bogomips        : 5003.94

^--- 8x

# xm dmesg

__ __ _____ ____ ____ ____\ \/ /___ _ __ |___ / |___ \ |___ \ _ __ ___|___ \ _ __ _ _____\ // _ \ \047_ \ |_ \ __) | __) |__| \047__/ __| __) |__|\047_ \| \047__/ _ \/ \ __/ | | | ___) | / __/ _ / __/|__| | | (__ / __/|__| |_) | | |__//_/\_\___|_| |_| |____(_)_____(_)_____| |_| \___|_____| | .__/|_|\___||_|(XEN) Xen version 3.2.2-rc2-pre (...) (gcc version 4.0.3 (Ubuntu4.0.3-1ubuntu5)) Thu Jul 31 14:47:33 EDT 2008

(XEN) Latest ChangeSet: unavailable
(XEN) Command line: dom0_mem=307200 com1=115200,8n1 console=com1
(XEN) Video information:
(XEN)  VGA is text mode 80x25, font 8x16
(XEN)  VBE/DDC methods: none; EDID transfer time: 2 seconds
(XEN)  EDID info not retrieved because no DDC retrieval method detected
(XEN) Disc information:
(XEN)  Found 1 MBR signatures
(XEN)  Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009d400 (usable)
(XEN)  000000000009d400 - 00000000000a0000 (reserved)
(XEN)  00000000000e4000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000cff60000 (usable)
(XEN)  00000000cff60000 - 00000000cff69000 (ACPI data)
(XEN)  00000000cff69000 - 00000000cff80000 (ACPI NVS)
(XEN)  00000000cff80000 - 00000000d0000000 (reserved)
(XEN)  00000000e0000000 - 00000000f0000000 (reserved)
(XEN)  00000000fec00000 - 00000000fec10000 (reserved)
(XEN)  00000000fee00000 - 00000000fee01000 (reserved)
(XEN)  00000000ff000000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000630000000 (usable)
(XEN) System RAM: 24574MB (25164788kB)

(XEN) ACPI: RSDP (v000 PTLTD ) @0x00000000000f5e60(XEN) ACPI: RSDT (v001 PTLTD RSDT 0x06040000 LTP 0x00000000) @0x00000000cff63321(XEN) ACPI: FADT (v001 INTEL TUMWATER 0x06040000 PTL 0x00000003) @0x00000000cff68e10(XEN) ACPI: MADT (v001 PTLTD APIC 0x06040000 LTP 0x00000000) @0x00000000cff68e84(XEN) ACPI: MCFG (v001 PTLTD MCFG 0x06040000 LTP 0x00000000) @0x00000000cff68f4c(XEN) ACPI: BOOT (v001 PTLTD $SBFTBL$ 0x06040000 LTP 0x00000001) @0x00000000cff68f88(XEN) ACPI: SPCR (v001 PTLTD $UCRTBL$ 0x06040000 PTL 0x00000001) @0x00000000cff68fb0(XEN) ACPI: SSDT (v001 PmRef Cpu0Tst 0x00003000 INTL 0x20050228) @0x00000000cff64bf0(XEN) ACPI: SSDT (v001 PmRef Cpu7Tst 0x00003000 INTL 0x20050228) @0x00000000cff64b4a(XEN) ACPI: SSDT (v001 PmRef Cpu6Tst 0x00003000 INTL 0x20050228) @0x00000000cff64aa4(XEN) ACPI: SSDT (v001 PmRef Cpu5Tst 0x00003000 INTL 0x20050228) @0x00000000cff649fe(XEN) ACPI: SSDT (v001 PmRef Cpu4Tst 0x00003000 INTL 0x20050228) @0x00000000cff64958(XEN) ACPI: SSDT (v001 PmRef Cpu3Tst 0x00003000 INTL 0x20050228) @0x00000000cff648b2(XEN) ACPI: SSDT (v001 PmRef Cpu2Tst 0x00003000 INTL 0x20050228) @0x00000000cff6480c(XEN) ACPI: SSDT (v001 PmRef Cpu1Tst 0x00003000 INTL 0x20050228) @0x00000000cff64766(XEN) ACPI: SSDT (v001 PmRef CpuPm 0x00003000 INTL 0x20050228) @0x00000000cff6337d(XEN) ACPI: DSDT (v001 Intel BLAKFORD 0x06040000 MSFT 0x0100000e) @0x0000000000000000

(XEN) NUMA turned off
(XEN) Faking a node at 0000000000000000-0000000630000000
(XEN) Xen heap: 13MB (14120kB)
(XEN) Domain heap initialised: DMA width 32 bits
(XEN) found SMP MP-table at 000f5e90
(XEN) DMI present.
(XEN) Using APIC driver default
(XEN) ACPI: PM-Timer IO Port: 0x1008
(XEN) ACPI: ACPI SLEEP INFO: pm1x_cnt[1004,0], pm1x_evt[1000,0]
(XEN) ACPI:                  wakeup_vec[cff69fcc], vec_size[20]
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) Processor #0 7:7 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x04] enabled)
(XEN) Processor #4 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[0x05] enabled)
(XEN) Processor #5 7:7 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x02] enabled)
(XEN) Processor #2 7:7 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x06] enabled)
(XEN) Processor #6 7:7 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x03] enabled)
(XEN) Processor #3 7:7 APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x07] enabled)
(XEN) Processor #7 7:7 APIC version 20
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x05] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x06] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x07] high edge lint[0x1])
(XEN) ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
(XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
(XEN) ACPI: IOAPIC (id[0x09] address[0xfec80000] gsi_base[24])
(XEN) IOAPIC[1]: apic_id 9, version 32, address 0xfec80000, GSI 24-47
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
(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 2 I/O APICs
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Initializing CPU#0
(XEN) Detected 2500.174 MHz processor.
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 0
(XEN) HVM: VMX enabled
(XEN) CPU0: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 1/4 eip 8c000
(XEN) Initializing CPU#1
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 1
(XEN) CPU: Processor Core ID: 0
(XEN) CPU1: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 2/1 eip 8c000
(XEN) Initializing CPU#2
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 1
(XEN) CPU2: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 3/5 eip 8c000
(XEN) Initializing CPU#3
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 1
(XEN) CPU: Processor Core ID: 1
(XEN) CPU3: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 4/2 eip 8c000
(XEN) Initializing CPU#4
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 2
(XEN) CPU4: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 5/6 eip 8c000
(XEN) Initializing CPU#5
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 1
(XEN) CPU: Processor Core ID: 2
(XEN) CPU5: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 6/3 eip 8c000
(XEN) Initializing CPU#6
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 3
(XEN) CPU6: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Booting processor 7/7 eip 8c000
(XEN) Initializing CPU#7
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: Physical Processor ID: 1
(XEN) CPU: Processor Core ID: 3
(XEN) CPU7: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz stepping 06
(XEN) Total of 8 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 8 CPUs: passed.
(XEN) Platform timer overflows in 234 jiffies.
(XEN) Platform timer is 3.579MHz ACPI PM Timer
(XEN) Brought up 8 CPUs
(XEN) ACPI sleep modes: S3
(XEN) Machine check exception polling timer started.

(XEN) xenoprof: Initialization failed. Intel processor model 23 for P6class family is not supported

(XEN) AMD IOMMU: Disabled
(XEN) *** LOADING DOMAIN 0 ***
(XEN) elf_parse_binary: phdr: paddr=0x100000 memsz=0x42aa28
(XEN) elf_parse_binary: phdr: paddr=0x52b000 memsz=0x12de44
(XEN) elf_parse_binary: memory: 0x100000 -> 0x658e44
(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 = 0xc0000000
(XEN) elf_xen_parse_note: PADDR_OFFSET = 0x0
(XEN) elf_xen_parse_note: ENTRY = 0xc0100000
(XEN) elf_xen_parse_note: HYPERCALL_PAGE = 0xc0101000
(XEN) elf_xen_parse_note: HV_START_LOW = 0xf5800000

(XEN) elf_xen_parse_note: FEATURES ="writable_page_tables|writable_descriptor_tables|auto_translated_physmap|pae_pgdir_above_4gb|supervisor_mode_kernel"

(XEN) elf_xen_parse_note: PAE_MODE = "yes"
(XEN) elf_xen_parse_note: unknown xen elf note (0xd)
(XEN) elf_xen_parse_note: LOADER = "generic"
(XEN) elf_xen_parse_note: SUSPEND_CANCEL = 0x1
(XEN) elf_xen_parse: using notes from SHT_NOTE section
(XEN) elf_xen_addr_calc_check: addresses:
(XEN)     virt_base        = 0xc0000000
(XEN)     elf_paddr_offset = 0x0
(XEN)     virt_offset      = 0xc0000000
(XEN)     virt_kstart      = 0xc0100000
(XEN)     virt_kend        = 0xc0658e44
(XEN)     virt_entry       = 0xc0100000
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 32-bit, PAE, lsb, paddr 0x100000 -> 0x658e44
(XEN) PHYSICAL MEMORY ARRANGEMENT:

(XEN) Dom0 alloc.: 000000061b000000->000000061b800000 (74752 pages tobe allocated)

(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: 00000000c0100000->00000000c0658e44
(XEN)  Init. ramdisk: 00000000c0659000->00000000c0659000
(XEN)  Phys-Mach map: 00000000c0659000->00000000c06a4000
(XEN)  Start info:    00000000c06a4000->00000000c06a44a4
(XEN)  Page tables:   00000000c06a5000->00000000c06af000
(XEN)  Boot stack:    00000000c06af000->00000000c06b0000
(XEN)  TOTAL:         00000000c0000000->00000000c0800000
(XEN)  ENTRY ADDRESS: 00000000c0100000
(XEN) Dom0 has maximum 8 VCPUs
(XEN) elf_load_binary: phdr 0 at 0x00000000c0100000 -> 0x00000000c052aa28
(XEN) elf_load_binary: phdr 1 at 0x00000000c052b000 -> 0x00000000c05efbe8

(XEN) Scrubbing Free RAM:................................................................................................................................................................................................................................................done.

(XEN) Xen trace buffers: disabled
(XEN) Std. Loglevel: All
(XEN) Guest Loglevel: All

-Chris

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References:
- Re: [Xen-devel] Xen 3.2.2 - Timer ISR/0: Time went backwards
  - From: Keir Fraser

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