Serial output of boot is attached.
Quite possible I'm crazy to think I could get this to work... :-)
Machine is a Dell Optiplex 755 (Intel Core2 Duo) running FC12.
I rebuilt the 3.4.2-2 src rpm from fc13.

kernel-2.6.32.9-1.2.89.xendom0.fc12.x86_64
kernel-firmware-2.6.32.9-1.2.89.xendom0.fc12.noarch
kernel-headers-2.6.32.9-1.2.89.xendom0.fc12.x86_64
xen-3.4.2-2.fc12.x86_64
xen-doc-3.4.2-2.fc12.x86_64
xen-hypervisor-3.4.2-2.fc12.x86_64
xen-libs-3.4.2-2.fc12.x86_64
xen-runtime-3.4.2-2.fc12.x86_64

Thanks for any guidance,
jerry
 __  __            _____ _  _    ____    ____     __      _ ____  
 \ \/ /___ _ __   |___ /| || |  |___ \  |___ \   / _| ___/ |___ \ 
  \  // _ \ '_ \    |_ \| || |_   __) |__ __) | | |_ / __| | __) |
  /  \  __/ | | |  ___) |__   _| / __/|__/ __/ _|  _| (__| |/ __/ 
 /_/\_\___|_| |_| |____(_) |_|(_)_____| |_____(_)_|  \___|_|_____|
                                                                  
(XEN) Xen version 3.4.2 (jer...@dtint.com) (gcc version 4.4.3 20100127 (Red Hat 4.4.3-4) (GCC) ) Mon Mar 22 15:09:27 CDT 2010
(XEN) Latest ChangeSet: unavailable
(XEN) Console output is synchronous.
(XEN) Command line: dom0_mem=512M loglvl=all guest_loglvl=all sync_console console_to_ring com1=115200,8n1 console=com1 lapic=debug apic_verbosity=debug apic=debug iommu=off
(XEN) Video infor
(XEN)  VGA is text mode 80x25, font 8x16
(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN)  Found 2 MBR signatures
(XEN)  Found 2 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009e400 (usable)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 000000007ddff800 (usable)
(XEN)  000000007ddff800 - 000000007de53c00 (ACPI NVS)
(XEN)  000000007de53c00 - 000000007de55c00 (ACPI data)
(XEN)  000000007de55c00 - 000000007e000000 (reserved)
(XEN)  00000000e0000000 - 00000000f0000000 (reserved)
(XEN)  00000000fec00000 - 00000000fed00400 (reserved)
(XEN)  00000000fed20000 - 00000000feda0000 (reserved)
(XEN)  00000000fee00000 - 00000000fef00000 (reserved)
(XEN)  00000000ffb00000 - 0000000100000000 (reserved)
(XEN) System RAM: 2013MB (2061940kB)
(XEN) ACPI: RSDP 000FEC00, 0024 (r2 DELL  )
(XEN) ACPI: XSDT 000FC5B3, 0074 (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: FACP 000FC6E3, 00F4 (r3 DELL    B9K           15 ASL        61)
(XEN) ACPI: DSDT FFF76BF6, 4596 (r1   DELL    dt_ex     1000 INTL 20050624)
(XEN) ACPI: FACS 7DDFF800, 0040
(XEN) ACPI: SSDT FFF7B2AB, 00AA (r1   DELL    st_ex     1000 INTL 20050624)
(XEN) ACPI: APIC 000FC7D7, 0092 (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: BOOT 000FC869, 0028 (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: ASF! 000FC891, 0096 (r32 DELL    B9K           15 ASL        61)
(XEN) ACPI: MCFG 000FC927, 003E (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: HPET 000FC965, 0038 (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: TCPA 000FCBC1, 0032 (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: DMAR 000FCBF3, 00D0 (r1 DELL    B9K           15 ASL        61)
(XEN) ACPI: SLIC 000FC99D, 0176 (r1 DELL    B9K           15 ASL        61)
(XEN) NUMA turned off
(XEN) Faking a node at 0000000000000000-000000007ddff000
(XEN) Domain heap initialised
(XEN) found SMP MP-table at 000fe710
(XEN) DMI 2.5 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[7ddff80c], 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[0x05] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x07] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x00] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x01] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x02] disabled)
(XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x03] disabled)
(XEN) ACPI: LAPIC_NMI (acpi_id[0xff] high level 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: 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: 0x8086a301 base: 0xfed00000
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) mapped APIC to ffff828bffffe000 (fee00000)
(XEN) mapped IOAPIC to ffff828bffffd000 (fec00000)
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Initializing CPU#0
(XEN) Detected 2992.552 MHz processor.
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: L2 cache: 6144K
(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) Intel machine check reporting enabled on CPU#0.
(XEN) CPU0: Thermal monitoring enabled (TM2)
(XEN) CMCI: CPU0 has no CMCI support
(XEN) CPU0: Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz stepping 06
(XEN) Getting VERSION: 50014
(XEN) Getting VERSION: 50014
(XEN) Getting ID: 0
(XEN) Getting LVT0: 700
(XEN) Getting LVT1: 400
(XEN) enabled ExtINT on CPU#0
(XEN) ESR value before enabling vector: 0x00000040  after: 0x00000000
(XEN) Booting processor 1/1 eip 8c000
(XEN) Initializing CPU#1
(XEN) masked ExtINT on CPU#1
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: L2 cache: 6144K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 1
(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 Duo CPU     E8400  @ 3.00GHz stepping 06
(XEN) Total of 2 processors activated.
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using new ACK method
(XEN) init IO_APIC IRQs
(XEN)  IO-APIC (apicid-pin) 8-0, 8-16, 8-17, 8-18, 8-19, 8-20, 8-21, 8-22, 8-23 not connected.
(XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) number of MP IRQ sources: 15.
(XEN) number of IO-APIC #8 registers: 24.
(XEN) testing the IO APIC.......................
(XEN) IO APIC #8......
(XEN) .... register #00: 00000000
(XEN) .......    : physical APIC id: 00
(XEN) .......    : Delivery Type: 0
(XEN) .......    : LTS          : 0
(XEN) .... register #01: 00170020
(XEN) .......     : max redirection entries: 0017
(XEN) .......     : PRQ implemented: 0
(XEN) .......     : IO APIC version: 0020
(XEN) .... IRQ redirection table:
(XEN)  NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:   
(XEN)  00 000 00  1    0    0   0   0    0    0    00
(XEN)  01 001 01  0    0    0   0   0    1    1    20
(XEN)  02 001 01  0    0    0   0   0    1    1    F0
(XEN)  03 001 01  0    0    0   0   0    1    1    28
(XEN)  04 001 01  0    0    0   0   0    1    1    F1
(XEN)  05 001 01  0    0    0   0   0    1    1    30
(XEN)  06 001 01  0    0    0   0   0    1    1    38
(XEN)  07 001 01  0    0    0   0   0    1    1    40
(XEN)  08 001 01  0    0    0   0   0    1    1    48
(XEN)  09 001 01  1    1    0   0   0    1    1    50
(XEN)  0a 001 01  0    0    0   0   0    1    1    58
(XEN)  0b 001 01  0    0    0   0   0    1    1    60
(XEN)  0c 001 01  0    0    0   0   0    1    1    68
(XEN)  0d 001 01  0    0    0   0   0    1    1    70
(XEN)  0e 001 01  0    0    0   0   0    1    1    78
(XEN)  0f 001 01  0    0    0   0   0    1    1    88
(XEN)  10 000 00  1    0    0   0   0    0    0    00
(XEN)  11 000 00  1    0    0   0   0    0    0    00
(XEN)  12 000 00  1    0    0   0   0    0    0    00
(XEN)  13 000 00  1    0    0   0   0    0    0    00
(XEN)  14 000 00  1    0    0   0   0    0    0    00
(XEN)  15 000 00  1    0    0   0   0    0    0    00
(XEN)  16 000 00  1    0    0   0   0    0    0    00
(XEN)  17 000 00  1    0    0   0   0    0    0    00
(XEN) Using vector-based indexing
(XEN) IRQ to pin mappings:
(XEN) IRQ240 -> 0:2
(XEN) IRQ32 -> 0:1
(XEN) IRQ40 -> 0:3
(XEN) IRQ241 -> 0:4
(XEN) IRQ48 -> 0:5
(XEN) IRQ56 -> 0:6
(XEN) IRQ64 -> 0:7
(XEN) IRQ72 -> 0:8
(XEN) IRQ80 -> 0:9
(XEN) IRQ88 -> 0:10
(XEN) IRQ96 -> 0:11
(XEN) IRQ104 -> 0:12
(XEN) IRQ112 -> 0:13
(XEN) IRQ120 -> 0:14
(XEN) IRQ136 -> 0:15
(XEN) .................................... done.
(XEN) Using local APIC timer interrupts.
(XEN) calibrating APIC timer ...
(XEN) ..... CPU clock speed is 2992.4785 MHz.
(XEN) ..... host bus clock speed is 332.4975 MHz.
(XEN) ..... bus_scale = 0x00015489
(XEN) checking TSC synchronization across 2 CPUs: passed.
(XEN) Platform timer is 14.318MHz HPET
(XEN) Brought up 2 CPUs
(XEN) microcode.c:73:d32767 microcode: CPU1 resumed
(XEN) I/O virtualisation disabled
(XEN) HPET: 4 timers in total, 0 timers will be used for broadcast
(XEN) ACPI sleep modes: S3
(XEN) mcheck_poll: Machine check polling timer started.
(XEN) *** LOADING DOMAIN 0 ***
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1a81000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000074000000->0000000078000000 (114688 pages to be allocated)
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff81000000->ffffffff81a81000
(XEN)  Init. ramdisk: ffffffff81a81000->ffffffff8249c600
(XEN)  Phys-Mach map: ffffffff8249d000->ffffffff8259d000
(XEN)  Start info:    ffffffff8259d000->ffffffff8259d4b4
(XEN)  Page tables:   ffffffff8259e000->ffffffff825b5000
(XEN)  Boot stack:    ffffffff825b5000->ffffffff825b6000
(XEN)  TOTAL:         ffffffff80000000->ffffffff82800000
(XEN)  ENTRY ADDRESS: ffffffff81818200
(XEN) Dom0 has maximum 2 VCPUs
(XEN) Scrubbing Free RAM: ..............done.
(XEN) Xen trace buffers: disabled
(XEN) Std. Loglevel: All
(XEN) Guest Loglevel: All
(XEN) **********************************************
(XEN) ******* WARNING: CONSOLE OUTPUT IS SYNCHRONOUS
(XEN) ******* This option is intended to aid debugging of Xen by ensuring
(XEN) ******* that all output is synchronously delivered on the serial line.
(XEN) ******* However it can introduce SIGNIFICANT latencies and affect
(XEN) ******* timekeeping. It is NOT recommended for production use!
(XEN) **********************************************
(XEN) 3... 2... 1... 
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen)
(XEN) Freed 140kB init memory.
mapping kernel into physical memory
Xen: setup ISA identity maps
about to get started...
Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Linux version 2.6.32.9-1.2.89.xendom0.fc12.x86_64 (mockbu...@x86-03.phx2.fedoraproject.org) (gcc version 4.4.3 20100127 (Red Hat 4.4.3-4) (GCC) ) #1 SMP Tue Mar 2 00:58:02 UTC 2010
Command line: root=/dev/mapper/VolGroup00-LogVol00 ro console=hvc0 earlyprintk=xen nomodeset initcall_debug debug loglevel=10
KERNEL supported cpus:
  Intel GenuineIntel
  AMD AuthenticAMD
  Centaur CentaurHauls
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 000000000009e400 (usable)
 Xen: 00000000000a0000 - 0000000000100000 (reserved)
 Xen: 0000000000100000 - 0000000020000000 (usable)
 Xen: 000000007ddff800 - 000000007de53c00 (ACPI NVS)
 Xen: 000000007de53c00 - 000000007de55c00 (ACPI data)
 Xen: 000000007de55c00 - 000000007e000000 (reserved)
 Xen: 00000000e0000000 - 00000000f0000000 (reserved)
 Xen: 00000000fec00000 - 00000000fed00400 (reserved)
 Xen: 00000000fed20000 - 00000000feda0000 (reserved)
 Xen: 00000000fee00000 - 00000000fef00000 (reserved)
 Xen: 00000000ffb00000 - 0000000100000000 (reserved)
bootconsole [xenboot0] enabled
DMI 2.5 present.
last_pfn = 0x20000 max_arch_pfn = 0x400000000
initial memory mapped : 0 - 20000000
init_memory_mapping: 0000000000000000-0000000020000000
 0000000000 - 0020000000 page 4k
kernel direct mapping tables up to 20000000 @ 100000-202000
RAMDISK: 01a81000 - 0249c600
ACPI: RSDP 00000000000fec00 00024 (v02 DELL  )
ACPI: XSDT 00000000000fc5b3 00074 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: FACP 00000000000fc6e3 000F4 (v03 DELL    B9K     00000015 ASL  00000061)
ACPI: DSDT 00000000fff76bf6 04596 (v01   DELL    dt_ex 00001000 INTL 20050624)
ACPI: FACS 000000007ddff800 00040
ACPI: SSDT 00000000fff7b2ab 000AA (v01   DELL    st_ex 00001000 INTL 20050624)
ACPI: APIC 00000000000fc7d7 00092 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: BOOT 00000000000fc869 00028 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: ASF! 00000000000fc891 00096 (v32 DELL    B9K     00000015 ASL  00000061)
ACPI: MCFG 00000000000fc927 0003E (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: HPET 00000000000fc965 00038 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: TCPA 00000000000fcbc1 00032 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: DMAR 00000000000fcbf3 000D0 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: SLIC 00000000000fc99d 00176 (v01 DELL    B9K     00000015 ASL  00000061)
ACPI: Local APIC address 0xfee00000
No NUMA configuration found
Faking a node at 0000000000000000-0000000020000000
Bootmem setup node 0 0000000000000000-0000000020000000
  NODE_DATA [0000000000008000 - 000000000001dfff]
  bootmap [000000000001e000 -  0000000000021fff] pages 4
(8 early reservations) ==> bootmem [0000000000 - 0020000000]
  #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
  #1 [000259e000 - 00025b5000]   XEN PAGETABLES ==> [000259e000 - 00025b5000]
  #2 [0000006000 - 0000008000]       TRAMPOLINE ==> [0000006000 - 0000008000]
  #3 [0001000000 - 0001a60068]    TEXT DATA BSS ==> [0001000000 - 0001a60068]
  #4 [0001a81000 - 000249c600]          RAMDISK ==> [0001a81000 - 000249c600]
  #5 [000249d000 - 000259e000]   XEN START INFO ==> [000249d000 - 000259e000]
  #6 [0001a61000 - 0001a611a0]              BRK ==> [0001a61000 - 0001a611a0]
  #7 [0000100000 - 00001e8000]          PGTABLE ==> [0000100000 - 00001e8000]
found SMP MP-table at [ffff8800000fe710] fe710
Zone PFN ranges:
  DMA      0x00000000 -> 0x00001000
  DMA32    0x00001000 -> 0x00100000
  Normal   0x00100000 -> 0x00100000
Movable zone start PFN for each node
early_node_map[2] active PFN ranges
    0: 0x00000000 -> 0x0000009e
    0: 0x00000100 -> 0x00020000
On node 0 totalpages: 130974
  DMA zone: 56 pages used for memmap
  DMA zone: 235 pages reserved
  DMA zone: 3707 pages, LIFO batch:0
  DMA32 zone: 1736 pages used for memmap
  DMA32 zone: 125240 pages, LIFO batch:31
ACPI: PM-Timer IO Port: 0x808
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x05] disabled)
ACPI: LAPIC (acpi_id[0x04] lapic_id[0x07] disabled)
ACPI: LAPIC (acpi_id[0x05] lapic_id[0x00] disabled)
ACPI: LAPIC (acpi_id[0x06] lapic_id[0x01] disabled)
ACPI: LAPIC (acpi_id[0x07] lapic_id[0x02] disabled)
ACPI: LAPIC (acpi_id[0x08] lapic_id[0x03] disabled)
ACPI: LAPIC_NMI (acpi_id[0xff] high level lint[0x1])
ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 8, version 0, address 0xfec00000, GSI 0-0
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ERROR: Unable to locate IOAPIC for GSI 2
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ERROR: Unable to locate IOAPIC for GSI 9
Using ACPI (MADT) for SMP configuration information
ACPI: HPET id: 0x8086a301 base: 0xfed00000
SMP: Allowing 2 CPUs, 0 hotplug CPUs
nr_irqs_gsi: 256
PM: Registered nosave memory: 000000000009e000 - 00000000000a0000
PM: Registered nosave memory: 00000000000a0000 - 0000000000100000
Allocating PCI resources starting at 7e000000 (gap: 7e000000:62000000)
Booting paravirtualized kernel on Xen
Xen version: 3.4.2 (preserve-AD) (dom0)
NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:2 nr_node_ids:1
PERCPU: Embedded 30 pages/cpu @ffff8800025eb000 s90392 r8192 d24296 u122880
pcpu-alloc: s90392 r8192 d24296 u122880 alloc=30*4096
pcpu-alloc: [0] 0 [0] 1 
trying to map vcpu_info 0 at ffff8800025f6020, mfn 765f6, offset 32
cpu 0 using vcpu_info at ffff8800025f6020
trying to map vcpu_info 1 at ffff880002614020, mfn 76614, offset 32
cpu 1 using vcpu_info at ffff880002614020
Xen: using vcpu_info placement
Built 1 zonelists in Node order, mobility grouping on.  Total pages: 128947
Policy zone: DMA32
Kernel command line: root=/dev/mapper/VolGroup00-LogVol00 ro console=hvc0 earlyprintk=xen nomodeset initcall_debug debug loglevel=10
PID hash table entries: 2048 (order: 2, 16384 bytes)
Initializing CPU#0
DMA: Placing 64MB software IO TLB between ffff8800030bc000 - ffff8800070bc000
DMA: software IO TLB at phys 0x30bc000 - 0x70bc000
xen_swiotlb_fixup: buf=ffff8800030bc000 size=67108864
xen_swiotlb_fixup: buf=ffff88000711c000 size=32768
Memory: 427120k/524288k available (4465k kernel code, 392k absent, 96776k reserved, 3724k data, 944k init)
SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
Hierarchical RCU implementation.
NR_IRQS:4352 nr_irqs:512
xen: registering gsi 0 triggering 1 polarity 0
xen: --> irq=0
Failed to setup GSI :0, err_code:-38
------------[ cut here ]------------
kernel BUG at arch/x86/xen/pci.c:56!
invalid opcode: 0000 [#1] SMP 
last sysfs file: 
CPU 0 
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.32.9-1.2.89.xendom0.fc12.x86_64 #1 OptiPlex 755                 
RIP: e030:[<ffffffff8100fe7e>]  [<ffffffff8100fe7e>] xen_register_gsi+0xca/0x24c
RSP: e02b:ffffffff8167fea8  EFLAGS: 00010092
RAX: 000000000000002b RBX: 0000000000000000 RCX: 0000000000000177
RDX: ffffffff81968574 RSI: ffffffff8100006f RDI: ffffffff81670068
RBP: ffffffff8167ff08 R08: 0000000000000175 R09: 0000000000000000
R10: 0000000000000001 R11: 0000800000000000 R12: 0000000000000000
R13: 0000000000000000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8800025eb000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000000001001000 CR4: 0000000000002660
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffffffff8167e000, task ffffffff816b81f0)
Stack:
 0000000000000002 0000000000000002 ffffffff81858520 0000000000004000
<0> 00000000000080d0 ffffffff81028834 ffff000000000000 ffffffff810288e9
<0> 0000000000000000 ffffffff8167ff24 ffffffff8167ff20 ffffffffffffffff
Call Trace:
 [<ffffffff81028834>] ? irq_polarity+0x9/0x5e
 [<ffffffff810288e9>] ? acpi_get_override_irq+0x60/0x74
 [<ffffffff8181d155>] xen_setup_pirqs+0x64/0x76
 [<ffffffff81846e35>] xen_init_IRQ+0x86/0x88
 [<ffffffff8181dfa6>] init_IRQ+0xa/0xc
 [<ffffffff81818bef>] start_kernel+0x201/0x3b6
 [<ffffffff818182c1>] x86_64_start_reservations+0xac/0xb0
 [<ffffffff8181be5c>] xen_start_kernel+0x634/0x63b
Code: ef 75 12 89 de 48 c7 c7 49 d1 5b 81 31 c0 e8 90 42 44 00 eb 1a 85 c0 74 16 89 c2 89 de 48 c7 c7 67 d1 5b 81 31 c0 e8 78 42 44 00 <0f> 0b eb fe 48 8d 75 a0 bf 0d 00 00 00 66 c7 45 a0 f0 7f c7 45 
RIP  [<ffffffff8100fe7e>] xen_register_gsi+0xca/0x24c
 RSP <ffffffff8167fea8>
---[ end trace 4eaa2a86a8e2da22 ]---
Kernel panic - not syncing: Attempted to kill the idle task!
Pid: 0, comm: swapper Tainted: G      D    2.6.32.9-1.2.89.xendom0.fc12.x86_64 #1
Call Trace:
 [<ffffffff8145403d>] panic+0x7a/0x133
 [<ffffffff81059f48>] do_exit+0x7b/0x6f9
 [<ffffffff8145728f>] oops_end+0xbf/0xc7
 [<ffffffff81015599>] die+0x5a/0x63
 [<ffffffff81456c9d>] do_trap+0x11a/0x129
 [<ffffffff81013820>] do_invalid_op+0x9c/0xa5
 [<ffffffff8100fe7e>] ? xen_register_gsi+0xca/0x24c
 [<ffffffff8100f16f>] ? xen_restore_fl_direct_end+0x0/0x1
 [<ffffffff81056f4e>] ? vprintk+0x35f/0x38b
 [<ffffffff8100f16f>] ? xen_restore_fl_direct_end+0x0/0x1
 [<ffffffff810ae191>] ? __set_irq_handler+0x121/0x144
 [<ffffffff81012abb>] invalid_op+0x1b/0x20
 [<ffffffff8100fe7e>] ? xen_register_gsi+0xca/0x24c
 [<ffffffff8100fe7e>] ? xen_register_gsi+0xca/0x24c
 [<ffffffff81028834>] ? irq_polarity+0x9/0x5e
 [<ffffffff810288e9>] ? acpi_get_override_irq+0x60/0x74
 [<ffffffff8181d155>] xen_setup_pirqs+0x64/0x76
 [<ffffffff81846e35>] xen_init_IRQ+0x86/0x88
 [<ffffffff8181dfa6>] init_IRQ+0xa/0xc
 [<ffffffff81818bef>] start_kernel+0x201/0x3b6
 [<ffffffff818182c1>] x86_64_start_reservations+0xac/0xb0
 [<ffffffff8181be5c>] xen_start_kernel+0x634/0x63b
--
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