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[Xen-devel] Re: [Pkg-xen-devel] Problems with PCI pass-through



On Sat, Jun 05, 2010 at 12:42:15AM +0200, Thomas Schwinge wrote:
> Hello!
> 
> As I'm writing in
> <http://lists.alioth.debian.org/pipermail/pkg-xen-devel/2010-May/002782.html>
> I'm having problems with PCI pass-through.
> 
> It doesn't matter whether I'm using a 3.4 or 4.0 hypervisor (Debian
> packages).  Also I tested two different kernels (both .32 ones).
> 
> 
> Some more details:
> 
> On Sat, May 29, 2010 at 03:32:46PM +0300, Pasi Kärkkäinen wrote:
> > On Fri, May 28, 2010 at 11:18:56PM +0200, Thomas Schwinge wrote:
> > > I'm having problems getting PCI pass-through to work.
> > > 
> > > This is on a AMD64 system, paravirtualized with xen-hypervisor-4.0-amd64
> > > 4.0.0-1~experimental.1, dom0: linux-image-2.6.32-5-xen-amd64 2.6.32-12.
> > 
> > Can you try grabbing a kernel from Jeremy's xen.git xen/stable-2.6.32.x 
> > branch
> > and compiling it.. ? 
> 
> I'll do that in case that the following doesn't yield an answer:
> 
> > Just yesterday there was an user on ##xen telling it worked OK for him.
> > Other than that.. dunno really.
> > 
> > What's the Xen PCI backend mode on dom0 kernel .config? 
> 
> It's the same for the dom0 and domU:
> 
>     $ < /boot/config-2.6.32-5-xen-amd64 grep -i xen | grep -i pci
>     CONFIG_XEN_DOM0_PCI=y
>     # CONFIG_XEN_PCI_PASSTHROUGH is not set
>     CONFIG_PCI_XEN=y
>     CONFIG_XEN_PCIDEV_FRONTEND=y
>     CONFIG_XEN_PCIDEV_BACKEND=y
>     CONFIG_XEN_PCIDEV_BACKEND_VPCI=y
>     # CONFIG_XEN_PCIDEV_BACKEND_PASS is not set
>

Try using CONFIG_XEN_PCIDEV_BACKEND_PASS instead of 
CONFIG_XEN_PCIDEV_BACKEND_VPCI,
maybe that helps.. dunno.

-- Pasi

>     # CONFIG_XEN_PCIDEV_BACKEND_SLOT is not set
>     # CONFIG_XEN_PCIDEV_BACKEND_CONTROLLER is not set
>     # CONFIG_XEN_PCIDEV_BE_DEBUG is not set
>     # CONFIG_XEN_PLATFORM_PCI is not set
> 
> That seems correct to me.  Right?
> 
> 
> Here's how I boot the dom0:
> 
>         multiboot /boot/xen-4.0-amd64.gz noreboot com1=38400,8n1 
> vga=current,keep console=com1,vga loglvl=all guest_loglvl=all console_to_ring
>         module /boot/vmlinuz-2.6.32-5-xen-amd64 
> /boot/vmlinuz-2.6.32-5-xen-amd64 xen-pciback.hide=(00:02.7) 
> root=/dev/mapper/vg0-boole--root ro console=hvc0 earlyprintk=xen debug 
>         module /boot/initrd.img-2.6.32-5-xen-amd64 
> /boot/initrd.img-2.6.32-5-xen-amd64
> 
> domU:
> 
>     kernel = '/boot/vmlinuz-2.6.32-5-xen-686'
>     ramdisk = '/boot/initrd.img-2.6.32-5-xen-686'
>     memory = 456
>     name = 'kepler'
>     root = '/dev/xvda ro'
>     vif = [ 'mac=00:16:3e:23:85:35, bridge=br0' ]
>     disk = [ 'phy:vg1/kepler-root,xvda,w', 'phy:vg1/kepler-swap,xvdb,w', 
> 'phy:vg1/kepler-data,xvdc,w']
>     extra = 'iommu=soft swiotlb=force'
>     pci = [ '0000:00:02.7' ]
> 
> Boot log for the dom0:
> 
>     (XEN) Xen version 4.0.0 (Debian 4.0.0-1~experimental.2) 
> (waldi@xxxxxxxxxx) (gcc version 4.4.4 (Debian 4.4.4-3) ) Fri May 28 11:28:13 
> UTC 2010
>     (XEN) Command line: com1=38400,8n1 vga=current,keep console=com1,vga 
> loglvl=all guest_loglvl=all console_to_ring
>     (XEN) Video information:
>     (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 - 000000000009dc00 (usable)
>     (XEN)  000000000009dc00 - 00000000000a0000 (reserved)
>     (XEN)  00000000000d6000 - 00000000000d8000 (reserved)
>     (XEN)  00000000000e4000 - 0000000000100000 (reserved)
>     (XEN)  0000000000100000 - 000000009dee0000 (usable)
>     (XEN)  000000009dee0000 - 000000009deef000 (ACPI data)
>     (XEN)  000000009deef000 - 000000009df00000 (ACPI NVS)
>     (XEN)  000000009df00000 - 00000000a0000000 (reserved)
>     (XEN)  00000000fec00000 - 00000000fec10000 (reserved)
>     (XEN)  00000000fee00000 - 00000000fee01000 (reserved)
>     (XEN)  00000000fff00000 - 0000000100000000 (reserved)
>     (XEN) System RAM: 2480MB (2539720kB)
>     (XEN) ACPI: RSDP 000F7350, 0024 (r2 PTLTD )
>     (XEN) ACPI: XSDT 9DEEB7E4, 004C (r1 PTLTD          XSDT      50000  LTP   
>      0)
>     (XEN) ACPI: FACP 9DEEB8A4, 00F4 (r3 FSC       ÷Pè0    50000         
> F4240)
>     (XEN) ACPI: DSDT 9DEEB998, 34FB (r1 FSC    D2030       50000 MSFT  
> 2000002)
>     (XEN) ACPI: FACS 9DEEFFC0, 0040
>     (XEN) ACPI: SSDT 9DEEEE93, 00B5 (r1 PTLTD  POWERNOW    50000  LTP        
> 1)
>     (XEN) ACPI: APIC 9DEEEF48, 0050 (r1 PTLTD          APIC      50000  LTP   
>      0)
>     (XEN) ACPI: MCFG 9DEEEF98, 0040 (r1 PTLTD    MCFG      50000  LTP        
> 0)
>     (XEN) ACPI: BOOT 9DEEEFD8, 0028 (r1 PTLTD  $SBFTBL$    50000  LTP        
> 1)
>     (XEN) No NUMA configuration found
>     (XEN) Faking a node at 0000000000000000-000000009dee0000
>     (XEN) Domain heap initialised
>     (XEN) found SMP MP-table at 000f73b0
>     (XEN) DMI present.
>     (XEN) Using APIC driver default
>     (XEN) ACPI: PM-Timer IO Port: 0xf008
>     (XEN) ACPI: ACPI SLEEP INFO: pm1x_cnt[f004,0], pm1x_evt[f000,0]
>     (XEN) ACPI:                  wakeup_vec[9deeffcc], vec_size[20]
>     (XEN) ACPI: Local APIC address 0xfee00000
>     (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>     (XEN) Processor #0 15:15 APIC version 16
>     (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
>     (XEN) ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
>     (XEN) IOAPIC[0]: apic_id 1, version 20, address 0xfec00000, GSI 0-23
>     (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
>     (XEN) ACPI: IRQ0 used by override.
>     (XEN) ACPI: IRQ2 used by override.
>     (XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
>     (XEN) PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 2
>     (XEN) PCI: Not using MMCONFIG.
>     (XEN) Using ACPI (MADT) for SMP configuration information
>     (XEN) Using scheduler: SMP Credit Scheduler (credit)
>     (XEN) Detected 1800.096 MHz processor.
>     (XEN) Initing memory sharing.
>     (XEN) CPU0: AMD Flush Filter disabled
>     (XEN) AMD K8 machine check reporting enabled
>     (XEN) AMD-Vi: IOMMU not found!
>     (XEN) I/O virtualisation disabled
>     (XEN) Total of 1 processors activated.
>     (XEN) ENABLING IO-APIC IRQs
>     (XEN)  -> Using new ACK method
>     (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=0 pin2=0
>     (XEN) Platform timer is 3.579MHz ACPI PM Timer
>     ÿ(XEN) Brought up 1 CPUs
>     (XEN) CPUIDLE: disabled due to no HPET. Force enable with 'cpuidle'.
>     (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 -> 0x16c1000
>     (XEN) PHYSICAL MEMORY ARRANGEMENT:
>     (XEN)  Dom0 alloc.:   0000000094000000->0000000098000000 (589068 pages to 
> be allocated)
>     (XEN) VIRTUAL MEMORY ARRANGEMENT:
>     (XEN)  Loaded kernel: ffffffff81000000->ffffffff816c1000
>     (XEN)  Init. ramdisk: ffffffff816c1000->ffffffff833ea200
>     (XEN)  Phys-Mach map: ffffffff833eb000->ffffffff83889860
>     (XEN)  Start info:    ffffffff8388a000->ffffffff8388a4b4
>     (XEN)  Page tables:   ffffffff8388b000->ffffffff838ac000
>     (XEN)  Boot stack:    ffffffff838ac000->ffffffff838ad000
>     (XEN)  TOTAL:         ffffffff80000000->ffffffff83c00000
>     (XEN)  ENTRY ADDRESS: ffffffff81501200
>     (XEN) Dom0 has maximum 1 VCPUs
>     (XEN) Scrubbing Free RAM: .done.
>     (XEN) Xen trace buffers: disabled
>     (XEN) Std. Loglevel: All
>     (XEN) Guest Loglevel: All
>     (XEN) Xen is keeping VGA console.
>     (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input 
> to Xen)
>     (XEN) Freed 164kB init memory.
>     mapping kernel into physical memory
>     Xen: setup ISA identity maps
>     about to get started...
>     [    0.000000] Initializing cgroup subsys cpuset
>     [    0.000000] Initializing cgroup subsys cpu
>     [    0.000000] Linux version 2.6.32-5-xen-amd64 (Debian 2.6.32-15) 
> (ben@xxxxxxxxxxxxxxx) (gcc version 4.3.5 (Debian 4.3.5-1) ) #1 SMP Tue Jun 1 
> 06:38:33 UTC 2010
>     [    0.000000] Command line: xen-pciback.hide=(00:02.7) 
> root=/dev/mapper/vg0-boole--root ro console=hvc0 earlyprintk=xen debug
>     [    0.000000] KERNEL supported cpus:
>     [    0.000000]   Intel GenuineIntel
>     [    0.000000]   AMD AuthenticAMD
>     [    0.000000]   Centaur CentaurHauls
>     [    0.000000] released 0 pages of unused memory
>     [    0.000000] BIOS-provided physical RAM map:
>     [    0.000000]  Xen: 0000000000000000 - 000000000009dc00 (usable)
>     [    0.000000]  Xen: 000000000009dc00 - 0000000000100000 (reserved)
>     [    0.000000]  Xen: 0000000000100000 - 0000000093d0c000 (usable)
>     [    0.000000]  Xen: 000000009dee0000 - 000000009deef000 (ACPI data)
>     [    0.000000]  Xen: 000000009deef000 - 000000009df00000 (ACPI NVS)
>     [    0.000000]  Xen: 000000009df00000 - 00000000a0000000 (reserved)
>     [    0.000000]  Xen: 00000000fec00000 - 00000000fec10000 (reserved)
>     [    0.000000]  Xen: 00000000fee00000 - 00000000fee01000 (reserved)
>     [    0.000000]  Xen: 00000000fff00000 - 0000000100000000 (reserved)
>     [    0.000000] bootconsole [xenboot0] enabled
>     [    0.000000] DMI present.
>     [    0.000000] Phoenix BIOS detected: BIOS may corrupt low RAM, working 
> around it.
>     [    0.000000] e820 update range: 0000000000000000 - 0000000000010000 
> (usable) ==> (reserved)
>     [    0.000000] last_pfn = 0x93d0c max_arch_pfn = 0x400000000
>     [    0.000000] x86 PAT enabled: cpu 0, old 0x50100070406, new 
> 0x7010600070106
>     [    0.000000] initial memory mapped : 0 - 20000000
>     [    0.000000] init_memory_mapping: 0000000000000000-0000000093d0c000
>     [    0.000000]  0000000000 - 0093d0c000 page 4k
>     [    0.000000] kernel direct mapping tables up to 93d0c000 @ 100000-5a3000
>     [    0.000000] RAMDISK: 016c1000 - 033ea200
>     [    0.000000] ACPI: RSDP 00000000000f7350 00024 (v02 PTLTD )
>     [    0.000000] ACPI: XSDT 000000009deeb7e4 0004C (v01 PTLTD  ? XSDT   
> 00050000  LTP 00000000)
>     [    0.000000] ACPI: FACP 000000009deeb8a4 000F4 (v03 FSC       ÷Pè0? 
> 00050000      000F4240)
>     [    0.000000] ACPI: DSDT 000000009deeb998 034FB (v01 FSC    D2030    
> 00050000 MSFT 02000002)
>     [    0.000000] ACPI: FACS 000000009deeffc0 00040
>     [    0.000000] ACPI: SSDT 000000009deeee93 000B5 (v01 PTLTD  POWERNOW 
> 00050000  LTP 00000001)
>     [    0.000000] ACPI: APIC 000000009deeef48 00050 (v01 PTLTD  ? APIC   
> 00050000  LTP 00000000)
>     [    0.000000] ACPI: MCFG 000000009deeef98 00040 (v01 PTLTD    MCFG   
> 00050000  LTP 00000000)
>     [    0.000000] ACPI: BOOT 000000009deeefd8 00028 (v01 PTLTD  $SBFTBL$ 
> 00050000  LTP 00000001)
>     [    0.000000] ACPI: Local APIC address 0xfee00000
>     [    0.000000] Scanning NUMA topology in Northbridge 24
>     [    0.000000] No NUMA configuration found
>     [    0.000000] Faking a node at 0000000000000000-0000000093d0c000
>     [    0.000000] Bootmem setup node 0 0000000000000000-0000000093d0c000
>     [    0.000000]   NODE_DATA [0000000000010000 - 0000000000017fff]
>     [    0.000000]   bootmap [0000000000018000 -  000000000002a7a7] pages 13
>     [    0.000000] (8 early reservations) ==> bootmem [0000000000 - 
> 0093d0c000]
>     [    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> 
> [0000000000 - 0000001000]
>     [    0.000000]   #1 [000388b000 - 00038ac000]   XEN PAGETABLES ==> 
> [000388b000 - 00038ac000]
>     [    0.000000]   #2 [0000006000 - 0000008000]       TRAMPOLINE ==> 
> [0000006000 - 0000008000]
>     [    0.000000]   #3 [0001000000 - 00016a0594]    TEXT DATA BSS ==> 
> [0001000000 - 00016a0594]
>     [    0.000000]   #4 [00016c1000 - 00033ea200]          RAMDISK ==> 
> [00016c1000 - 00033ea200]
>     [    0.000000]   #5 [00033eb000 - 000388b000]   XEN START INFO ==> 
> [00033eb000 - 000388b000]
>     [    0.000000]   #6 [00016a1000 - 00016a11c4]              BRK ==> 
> [00016a1000 - 00016a11c4]
>     [    0.000000]   #7 [0000100000 - 000057f000]          PGTABLE ==> 
> [0000100000 - 000057f000]
>     [    0.000000] found SMP MP-table at [ffff8800000f73b0] f73b0
>     [    0.000000] Zone PFN ranges:
>     [    0.000000]   DMA      0x00000010 -> 0x00001000
>     [    0.000000]   DMA32    0x00001000 -> 0x00100000
>     [    0.000000]   Normal   0x00100000 -> 0x00100000
>     [    0.000000] Movable zone start PFN for each node
>     [    0.000000] early_node_map[2] active PFN ranges
>     [    0.000000]     0: 0x00000010 -> 0x0000009d
>     [    0.000000]     0: 0x00000100 -> 0x00093d0c
>     [    0.000000] On node 0 totalpages: 605337
>     [    0.000000]   DMA zone: 56 pages used for memmap
>     [    0.000000]   DMA zone: 1154 pages reserved
>     [    0.000000]   DMA zone: 2771 pages, LIFO batch:0
>     [    0.000000]   DMA32 zone: 8222 pages used for memmap
>     [    0.000000]   DMA32 zone: 593134 pages, LIFO batch:31
>     [    0.000000] ACPI: PM-Timer IO Port: 0xf008
>     [    0.000000] ACPI: Local APIC address 0xfee00000
>     [    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>     [    0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
>     [    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
>     [    0.000000] IOAPIC[0]: apic_id 1, version 0, address 0xfec00000, GSI 
> 0-0
>     [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
>     [    0.000000] ERROR: Unable to locate IOAPIC for GSI 2
>     [    0.000000] ERROR: Unable to locate IOAPIC for GSI 9
>     [    0.000000] Using ACPI (MADT) for SMP configuration information
>     [    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
>     [    0.000000] nr_irqs_gsi: 256
>     [    0.000000] PM: Registered nosave memory: 000000000009d000 - 
> 000000000009e000
>     [    0.000000] PM: Registered nosave memory: 000000000009e000 - 
> 0000000000100000
>     [    0.000000] Allocating PCI resources starting at a0000000 (gap: 
> a0000000:5ec00000)
>     [    0.000000] Booting paravirtualized kernel on Xen
>     [    0.000000] Xen version: 4.0.0 (preserve-AD) (dom0)
>     [    0.000000] NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:1 nr_node_ids:1
>     [    0.000000] PERCPU: Embedded 29 pages/cpu @ffff8800038e2000 s90008 
> r8192 d20584 u118784
>     [    0.000000] pcpu-alloc: s90008 r8192 d20584 u118784 alloc=29*4096
>     [    0.000000] pcpu-alloc: [0] 0 
>     [    0.000000] trying to map vcpu_info 0 at ffff8800038ed020, mfn 978ed, 
> offset 32
>     [    0.000000] cpu 0 using vcpu_info at ffff8800038ed020
>     [    0.000000] Xen: using vcpu_info placement
>     [    0.000000] Built 1 zonelists in Node order, mobility grouping on.  
> Total pages: 595905
>     [    0.000000] Policy zone: DMA32
>     [    0.000000] Kernel command line: xen-pciback.hide=(00:02.7) 
> root=/dev/mapper/vg0-boole--root ro console=hvc0 earlyprintk=xen debug
>     [    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
>     [    0.000000] Initializing CPU#0
>     [    0.000000] DMA: Placing 64MB software IO TLB between ffff880005e00000 
> - ffff880009e00000
>     [    0.000000] DMA: software IO TLB at phys 0x5e00000 - 0x9e00000
>     [    0.000000] xen_swiotlb_fixup: buf=ffff880005e00000 size=67108864
>     [    0.000000] xen_swiotlb_fixup: buf=ffff880009e60000 size=32768
>     [    0.000000] Memory: 2274720k/2421808k available (3131k kernel code, 
> 460k absent, 146628k reserved, 1899k data, 592k init)
>     [    0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, 
> CPUs=1, Nodes=1
>     [    0.000000] Hierarchical RCU implementation.
>     [    0.000000] NR_IRQS:4352 nr_irqs:512
>     [    0.000000] xen: --> irq=0
>     [    0.000000] xen: --> irq=1
>     [    0.000000] xen: --> irq=2
>     [    0.000000] xen: --> irq=3
>     [    0.000000] xen: --> irq=4
>     [    0.000000] xen: --> irq=5
>     [    0.000000] xen: --> irq=6
>     [    0.000000] xen: --> irq=7
>     [    0.000000] xen: --> irq=8
>     [    0.000000] xen: --> irq=9
>     [    0.000000] xen: --> irq=10
>     [    0.000000] xen: --> irq=11
>     [    0.000000] xen: --> irq=12
>     [    0.000000] xen: --> irq=13
>     [    0.000000] xen: --> irq=14
>     [    0.000000] xen: --> irq=15
>     [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
>     [    0.000000] Console: colour VGA+ 80x25
>     [    0.000000] console [hvc0] enabled, bootconsole disabled
>     [    0.000000] console [hvc0] enabled, bootconsole disabled
>     [    0.000000] Xen: using vcpuop timer interface
>     [    0.000000] installing Xen timer for CPU 0
>     [    0.000000]   alloc irq_desc for 511 on node 0
>     [    0.000000]   alloc kstat_irqs on node 0
>     [    0.000000] Detected 1800.096 MHz processor.
>     [    0.004000] Calibrating delay loop (skipped), value calculated using 
> timer frequency.. 3600.19 BogoMIPS (lpj=7200384)
>     [    0.004000] Security Framework initialized
>     [    0.004000] SELinux:  Disabled at boot.
>     [    0.004000] Dentry cache hash table entries: 524288 (order: 10, 
> 4194304 bytes)
>     [    0.007156] Inode-cache hash table entries: 262144 (order: 9, 2097152 
> bytes)
>     [    0.008971] Mount-cache hash table entries: 256
>     [    0.009697] Initializing cgroup subsys ns
>     [    0.010197] Initializing cgroup subsys cpuacct
>     [    0.010697] Initializing cgroup subsys devices
>     [    0.011198] Initializing cgroup subsys freezer
>     [    0.011695] Initializing cgroup subsys net_cls
>     [    0.012066] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 
> bytes/line)
>     [    0.013057] CPU: L2 Cache: 128K (64 bytes/line)
>     [    0.013554] CPU 0/0x0 -> Node 0
>     [    0.014050] tseg: 009df00000
>     [    0.014547] mce: CPU supports 5 MCE banks
>     (XEN) MCE: MSR 417 is not MCA MSR
>     (XEN) traps.c:2870: GPF (0000): ffff82c480174806 -> ffff82c4801f6a9d
>     [    0.016010] Performance Events: AMD PMU driver.
>     [    0.016535] ------------[ cut here ]------------
>     [    0.017038] WARNING: at 
> /build/buildd-linux-2.6_2.6.32-15-amd64-PisqNL/linux-2.6-2.6.32/debian/build/source_amd64_xen/arch/x86/xen/enlighten.c:731
>  init_hw_perf_events+0x32d/0x3cd()
>     [    0.018524] Hardware name: D2264-A1            
>     [    0.019018] Modules linked in:
>     [    0.019516] Pid: 0, comm: swapper Not tainted 2.6.32-5-xen-amd64 #1
>     [    0.020000] Call Trace:
>     [    0.020000]  [<ffffffff81508b0b>] ? init_hw_perf_events+0x32d/0x3cd
>     [    0.020000]  [<ffffffff81508b0b>] ? init_hw_perf_events+0x32d/0x3cd
>     [    0.020000]  [<ffffffff8104fc58>] ? warn_slowpath_common+0x77/0xa3
>     [    0.020000]  [<ffffffff81508b0b>] ? init_hw_perf_events+0x32d/0x3cd
>     [    0.020000]  [<ffffffff813034ec>] ? identify_cpu+0x2ff/0x308
>     [    0.020000]  [<ffffffff8100ee0f>] ? xen_restore_fl_direct_end+0x0/0x1
>     [    0.020000]  [<ffffffff810e86c1>] ? kmem_cache_alloc+0x8c/0xf0
>     [    0.020000]  [<ffffffff81508732>] ? identify_boot_cpu+0x15/0x3e
>     [    0.020000]  [<ffffffff815087b9>] ? check_bugs+0x9/0x2e
>     [    0.020000]  [<ffffffff81501cc2>] ? start_kernel+0x3cd/0x3e8
>     [    0.020000]  [<ffffffff81503c38>] ? xen_start_kernel+0x649/0x64f
>     [    0.020000] ---[ end trace a7919e7f17c0a725 ]---
>     [    0.020000] ... version:                0
>     [    0.020000] ... bit width:              48
>     [    0.020000] ... generic registers:      4
>     [    0.020000] ... value mask:             0000ffffffffffff
>     [    0.020000] ... max period:             00007fffffffffff
>     [    0.020000] ... fixed-purpose events:   0
>     [    0.020000] ... event mask:             000000000000000f
>     [    0.020000] SMP alternatives: switching to UP code
>     [    0.020000] Freeing SMP alternatives: 28k freed
>     [    0.020000] ACPI: Core revision 20090903
>     [    0.027227]   alloc irq_desc for 510 on node 0
>     [    0.027730]   alloc kstat_irqs on node 0
>     [    0.028019]   alloc irq_desc for 509 on node 0
>     [    0.028515]   alloc kstat_irqs on node 0
>     [    0.029016]   alloc irq_desc for 508 on node 0
>     [    0.029538]   alloc kstat_irqs on node 0
>     [    0.030040]   alloc irq_desc for 507 on node 0
>     [    0.030536]   alloc kstat_irqs on node 0
>     [    0.031198] Brought up 1 CPUs
>     [    0.031727] CPU0 attaching NULL sched-domain.
>     [    0.032177] devtmpfs: initialized
>     [    0.037032] Grant table initialized
>     [    0.037558] regulator: core version 0.5
>     [    0.038139] NET: Registered protocol family 16
>     [    0.038730]   alloc irq_desc for 506 on node 0
>     [    0.039228]   alloc kstat_irqs on node 0
>     [    0.039933] node 0 link 0: io port [0, fffff]
>     [    0.040018] TOM: 00000000a0000000 aka 2560M
>     [    0.040517] node 0 link 0: mmio [e0000000, efffffff]
>     [    0.041049] node 0 link 0: mmio [a0000, bffff]
>     [    0.041549] node 0 link 0: mmio [a0000000, fe0bffff]
>     [    0.042049] bus: [00,ff] on node 0 link 0
>     [    0.042545] bus: 00 index 0 io port: [0, ffff]
>     [    0.043041] bus: 00 index 1 mmio: [a0000000, fcffffffff]
>     [    0.043539] bus: 00 index 2 mmio: [a0000, bffff]
>     [    0.044001] ACPI: bus type pci registered
>     [    0.044106] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 
> - 2
>     [    0.044632] PCI: Not using MMCONFIG.
>     [    0.045128] PCI: Using configuration type 1 for base access
>     [    0.046525] bio: create slab <bio-0> at 0
>     [    0.048274] ERROR: Unable to locate IOAPIC for GSI 9
>     [    0.048844] ACPI: EC: Look up EC in DSDT
>     [    0.054875] ACPI: Interpreter enabled
>     [    0.055380] ACPI: (supports S0 S1 S3 S4 S5)
>     [    0.055919] ACPI: Using IOAPIC for interrupt routing
>     [    0.056055] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 
> - 2
>     [    0.058173] PCI: MCFG area at e0000000 reserved in ACPI motherboard 
> resources
>     [    0.059957] PCI: Using MMCONFIG at e0000000 - e02fffff
>     [    0.066987] ACPI: No dock devices found.
>     [    0.067692] ACPI: PCI Root Bridge [PCI0] (0000:00)
>     [    0.068001] pci 0000:00:00.0: reg 10 32bit mmio: 
> [0xf8000000-0xf9ffffff]
>     [    0.068241] pci 0000:00:02.5: reg 10 io port: [0x1f0-0x1f7]
>     [    0.068746] pci 0000:00:02.5: reg 14 io port: [0x3f4-0x3f7]
>     [    0.069250] pci 0000:00:02.5: reg 18 io port: [0x170-0x177]
>     [    0.069755] pci 0000:00:02.5: reg 1c io port: [0x374-0x377]
>     [    0.070259] pci 0000:00:02.5: reg 20 io port: [0x3480-0x348f]
>     [    0.070798] pci 0000:00:02.5: PME# supported from D3cold
>     [    0.071299] pci 0000:00:02.5: PME# disabled
>     [    0.071873] pci 0000:00:02.7: reg 10 io port: [0x1400-0x14ff]
>     [    0.072001] pci 0000:00:02.7: reg 14 io port: [0x1000-0x107f]
>     [    0.072001] pci 0000:00:02.7: supports D1 D2
>     [    0.072001] pci 0000:00:02.7: PME# supported from D3hot D3cold
>     [    0.072001] pci 0000:00:02.7: PME# disabled
>     [    0.072001] pci 0000:00:03.0: reg 10 32bit mmio: 
> [0xfa100000-0xfa100fff]
>     [    0.072001] pci 0000:00:03.1: reg 10 32bit mmio: 
> [0xfa101000-0xfa101fff]
>     [    0.072001] pci 0000:00:03.2: reg 10 32bit mmio: 
> [0xfa102000-0xfa102fff]
>     [    0.072001] pci 0000:00:03.3: reg 10 32bit mmio: 
> [0xfa103000-0xfa103fff]
>     [    0.072001] pci 0000:00:03.3: PME# supported from D0 D3hot D3cold
>     [    0.072001] pci 0000:00:03.3: PME# disabled
>     [    0.072049] pci 0000:00:05.0: reg 10 io port: [0x34b0-0x34b7]
>     [    0.072552] pci 0000:00:05.0: reg 14 io port: [0x34a4-0x34a7]
>     [    0.073055] pci 0000:00:05.0: reg 18 io port: [0x34a8-0x34af]
>     [    0.073560] pci 0000:00:05.0: reg 1c io port: [0x34a0-0x34a3]
>     [    0.074067] pci 0000:00:05.0: reg 20 io port: [0x3490-0x349f]
>     [    0.074598] pci 0000:00:05.0: reg 24 io port: [0x3400-0x347f]
>     [    0.075130] pci 0000:00:05.0: PME# supported from D3cold
>     [    0.075630] pci 0000:00:05.0: PME# disabled
>     [    0.076001] pci 0000:00:06.0: PME# supported from D0 D3hot D3cold
>     [    0.076001] pci 0000:00:06.0: PME# disabled
>     [    0.076001] pci 0000:00:09.0: reg 10 io port: [0x1800-0x18ff]
>     [    0.076001] pci 0000:00:09.0: reg 14 32bit mmio: 
> [0xfa105000-0xfa1050ff]
>     [    0.076001] pci 0000:00:09.0: supports D1 D2
>     [    0.076001] pci 0000:00:09.0: PME# supported from D1 D2 D3hot D3cold
>     [    0.076001] pci 0000:00:09.0: PME# disabled
>     [    0.076001] pci 0000:00:0a.0: reg 10 io port: [0x2c00-0x2c07]
>     [    0.076001] pci 0000:00:0a.0: reg 14 io port: [0x2800-0x2803]
>     [    0.076001] pci 0000:00:0a.0: reg 18 io port: [0x2400-0x2407]
>     [    0.076001] pci 0000:00:0a.0: reg 1c io port: [0x2000-0x2003]
>     [    0.076001] pci 0000:00:0a.0: reg 20 io port: [0x1c00-0x1c0f]
>     [    0.076001] pci 0000:00:0a.0: reg 24 32bit mmio: 
> [0xfa105400-0xfa1057ff]
>     [    0.076001] pci 0000:00:0a.0: reg 30 32bit mmio pref: 
> [0x000000-0x07ffff]
>     [    0.076001] pci 0000:00:0a.0: supports D1 D2
>     [    0.076001] pci 0000:00:0c.0: reg 10 32bit mmio: 
> [0xfa104000-0xfa104fff]
>     [    0.076001] pci 0000:00:0c.0: reg 14 io port: [0x3000-0x303f]
>     [    0.076001] pci 0000:00:0c.0: reg 18 32bit mmio: 
> [0xfa000000-0xfa0fffff]
>     [    0.076001] pci 0000:00:0c.0: reg 30 32bit mmio pref: 
> [0x000000-0x0fffff]
>     [    0.076001] pci 0000:00:0c.0: supports D1 D2
>     [    0.076001] pci 0000:00:0c.0: PME# supported from D0 D1 D2 D3hot D3cold
>     [    0.076001] pci 0000:00:0c.0: PME# disabled
>     [    0.076183] pci 0000:00:1f.0: PME# supported from D0 D3hot D3cold
>     [    0.076684] pci 0000:00:1f.0: PME# disabled
>     [    0.077252] pci 0000:01:00.0: reg 10 32bit mmio pref: 
> [0xf0000000-0xf7ffffff]
>     [    0.078248] pci 0000:01:00.0: reg 14 32bit mmio: 
> [0xfa200000-0xfa21ffff]
>     [    0.078752] pci 0000:01:00.0: reg 18 io port: [0x4000-0x407f]
>     [    0.079324] pci 0000:01:00.0: supports D1 D2
>     [    0.079887] pci 0000:00:01.0: bridge io port: [0x4000-0x4fff]
>     [    0.080001] pci 0000:00:01.0: bridge 32bit mmio: 
> [0xfa200000-0xfa2fffff]
>     [    0.080001] pci 0000:00:01.0: bridge 32bit mmio pref: 
> [0xf0000000-0xf7ffffff]
>     [    0.080107] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
>     [    0.081105] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIE._PRT]
>     [    0.081739] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIX._PRT]
>     [    0.082340] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCE0._PRT]
>     (XEN) PCI add device 00:00.0
>     (XEN) PCI add device 00:01.0
>     (XEN) PCI add device 00:02.0
>     (XEN) PCI add device 00:02.5
>     (XEN) PCI add device 00:02.7
>     (XEN) PCI add device 00:03.0
>     (XEN) PCI add device 00:03.1
>     (XEN) PCI add device 00:03.2
>     (XEN) PCI add device 00:03.3
>     (XEN) PCI add device 00:05.0
>     (XEN) PCI add device 00:06.0
>     (XEN) PCI add device 00:09.0
>     (XEN) PCI add device 00:0a.0
>     (XEN) PCI add device 00:0c.0
>     (XEN) PCI add device 00:18.0
>     (XEN) PCI add device 00:18.1
>     (XEN) PCI add device 00:18.2
>     (XEN) PCI add device 00:18.3
>     (XEN) PCI add device 00:1f.0
>     (XEN) PCI add device 01:00.0
>     [    0.101755] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 
> 12 14 15)
>     [    0.102921] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *9 10 11 
> 12 14 15)
>     [    0.104063] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *9 10 11 
> 12 14 15)
>     [    0.105193] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11 
> 12 14 15)
>     [    0.106346] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 *9 10 11 
> 12 14 15)
>     [    0.107473] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 *11 
> 12 14 15)
>     [    0.108122] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 *10 11 
> 12 14 15)
>     [    0.109251] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 *5 6 7 9 10 11 
> 12 14 15)
>     [    0.110378] sync cpu 0 get result 1 max_id 0
>     [    0.110881]   alloc irq_desc for 505 on node 0
>     [    0.111378]   alloc kstat_irqs on node 0
>     [    0.111933] xen_balloon: Initialising balloon driver with page order 0.
>     [    0.112113] vgaarb: device added: 
> PCI:0000:01:00.0,decodes=io+mem,owns=io+mem,locks=none
>     [    0.113105] vgaarb: loaded
>     [    0.113771] PCI: Using ACPI for IRQ routing
>     [    0.114567] Switching to clocksource xen
>     [    0.116001] pnp: P[    2.477802] usbcore: registered new interface 
> driver usbfs
>     [    2.478347] usbcore: registered new interface driver hub
>     [    2.488701] usbcore: registered new device driver usb
>     [    2.501851] SCSI subsystem initialized
>     [    2.538255] libata version 3.00 loaded.
>     [    2.539420] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI
>     [    2.539924] e100: Copyright(c) 1999-2006 Intel Corporation
>     [    2.547859] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
>     [    2.548444] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
>     [    2.548980] xen: registering gsi 19 triggering 0 polarity 1
>     [    2.549484]   alloc irq_desc for 19 on node 0
>     [    2.549982]   alloc kstat_irqs on node 0
>     [    2.550509] xen: --> irq=19
>     [    2.551015] r8169 0000:00:09.0: PCI INT A -> GSI 19 (level, low) -> 
> IRQ 19
>     [    2.551554] r8169 0000:00:09.0: no PCI Express capability
>     [    2.553032] eth0: RTL8110s at 0xffffc9000062e000, 00:30:05:d3:3e:73, 
> XID 04000000 IRQ 19
>     [    2.559216] xen: registering gsi 16 triggering 0 polarity 1
>     [    2.559731]   alloc irq_desc for 16 on node 0
>     [    2.560019]   alloc kstat_irqs on node 0
>     [    2.560770] xen: --> irq=16
>     [    2.561277] e100 0000:00:0c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 
> 16
>     [    2.584003] e100 0000:00:0c.0: PME# disabled
>     [    2.586782] e100: eth1: e100_probe: addr 0xfa104000, irq 16, MAC addr 
> 00:02:b3:29:31:eb
>     [    2.589890] pata_sis 0000:00:02.5: version 0.5.2
>     [    2.590421] xen: registering gsi 16 triggering 0 polarity 1
>     [    2.590921] xen_allocate_pirq: returning irq 16 for gsi 16
>     [    2.591418] xen: --> irq=16
>     [    2.591950] Already setup the GSI :16
>     [    2.592020] pata_sis 0000:00:02.5: PCI INT A -> GSI 16 (level, low) -> 
> IRQ 16
>     [    2.594650] scsi0 : pata_sis
>     [    2.595459] scsi1 : pata_sis
>     [    2.596969] ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0x3480 
> irq 14
>     [    2.597473] ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0x3488 
> irq 15
>     [    2.598658] xen: registering gsi 23 triggering 0 polarity 1
>     [    2.599169]   alloc irq_desc for 23 on node 0
>     [    2.599666]   alloc kstat_irqs on node 0
>     [    2.600248] xen: --> irq=23
>     [    2.600755] ehci_hcd 0000:00:03.3: PCI INT D -> GSI 23 (level, low) -> 
> IRQ 23
>     [    2.601778] ehci_hcd 0000:00:03.3: EHCI Host Controller
>     [    2.602331] ehci_hcd 0000:00:03.3: new USB bus registered, assigned 
> bus number 1
>     [    2.603421] ehci_hcd 0000:00:03.3: cache line size of 64 is not 
> supported
>     [    2.603961] ehci_hcd 0000:00:03.3: irq 23, io mem 0xfa103000
>     [    2.612020] ehci_hcd 0000:00:03.3: USB 2.0 started, EHCI 1.00
>     [    2.612590] usb usb1: New USB device found, idVendor=1d6b, 
> idProduct=0002
>     [    2.613090] usb usb1: New USB device strings: Mfr=3, Product=2, 
> SerialNumber=1
>     [    2.614079] usb usb1: Product: EHCI Host Controller
>     [    2.614576] usb usb1: Manufacturer: Linux 2.6.32-5-xen-amd64 ehci_hcd
>     [    2.615074] usb usb1: SerialNumber: 0000:00:03.3
>     [    2.615839] usb usb1: configuration #1 chosen from 1 choice
>     [    2.616510] hub 1-0:1.0: USB hub found
>     [    2.617077] hub 1-0:1.0: 8 ports detected
>     [    2.626539] sata_sil 0000:00:0a.0: version 2.4
>     [    2.627104] xen: registering gsi 17 triggering 0 polarity 1
>     [    2.627609]   alloc irq_desc for 17 on node 0
>     [    2.628026]   alloc kstat_irqs on node 0
>     [    2.628643] xen: --> irq=17
>     [    2.629151] sata_sil 0000:00:0a.0: PCI INT A -> GSI 17 (level, low) -> 
> IRQ 17
>     [    2.630418] scsi2 : sata_sil
>     [    2.631215] scsi3 : sata_sil
>     [    2.631925] scsi4 : sata_sil
>     [    2.632716] scsi5 : sata_sil
>     [    2.633389] ata3: SATA max UDMA/100 mmio m1024@0xfa105400 tf 
> 0xfa105480 irq 17
>     [    2.634412] ata4: SATA max UDMA/100 mmio m1024@0xfa105400 tf 
> 0xfa1054c0 irq 17
>     [    2.635407] ata5: SATA max UDMA/100 mmio m1024@0xfa105400 tf 
> 0xfa105680 irq 17
>     [    2.636397] ata6: SATA max UDMA/100 mmio m1024@0xfa105400 tf 
> 0xfa1056c0 irq 17
>     [    2.654999] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
>     [    2.658482] xen: registering gsi 20 triggering 0 polarity 1
>     [    2.658996]   alloc irq_desc for 20 on node 0
>     [    2.659522]   alloc kstat_irqs on node 0
>     [    2.660083] xen: --> irq=20
>     [    2.660590] ohci_hcd 0000:00:03.0: PCI INT A -> GSI 20 (level, low) -> 
> IRQ 20
>     [    2.661618] ohci_hcd 0000:00:03.0: OHCI Host Controller
>     [    2.662142] ohci_hcd 0000:00:03.0: new USB bus registered, assigned 
> bus number 2
>     [    2.663212] ohci_hcd 0000:00:03.0: irq 20, io mem 0xfa100000
>     [    2.718104] usb usb2: New USB device found, idVendor=1d6b, 
> idProduct=0001
>     [    2.718609] usb usb2: New USB device strings: Mfr=3, Product=2, 
> SerialNumber=1
>     [    2.719600] usb usb2: Product: OHCI Host Controller
>     [    2.720005] usb usb2: Manufacturer: Linux 2.6.32-5-xen-amd64 ohci_hcd
>     [    2.720005] usb usb2: SerialNumber: 0000:00:03.0
>     [    2.721369] usb usb2: configuration #1 chosen from 1 choice
>     [    2.722018] hub 2-0:1.0: USB hub found
>     [    2.722555] hub 2-0:1.0: 3 ports detected
>     [    2.723274] xen: registering gsi 21 triggering 0 polarity 1
>     [    2.723782]   alloc irq_desc for 21 on node 0
>     [    2.724282]   alloc kstat_irqs on node 0
>     [    2.724809] xen: --> irq=21
>     [    2.725315] ohci_hcd 0000:00:03.1: PCI INT B -> GSI 21 (level, low) -> 
> IRQ 21
>     [    2.726364] ohci_hcd 0000:00:03.1: OHCI Host Controller
>     [    2.726882] ohci_hcd 0000:00:03.1: new USB bus registered, assigned 
> bus number 3
>     [    2.727949] ohci_hcd 0000:00:03.1: irq 21, io mem 0xfa101000
>     [    2.782063] usb usb3: New USB device found, idVendor=1d6b, 
> idProduct=0001
>     [    2.782567] usb usb3: New USB device strings: Mfr=3, Product=2, 
> SerialNumber=1
>     [    2.783554] usb usb3: Product: OHCI Host Controller
>     [    2.784009] usb usb3: Manufacturer: Linux 2.6.32-5-xen-amd64 ohci_hcd
>     [    2.784009] usb usb3: SerialNumber: 0000:00:03.1
>     [    2.785351] usb usb3: configuration #1 chosen from 1 choice
>     [    2.785980] hub 3-0:1.0: USB hub found
>     [    2.786518] hub 3-0:1.0: 3 ports detected
>     [    2.787216] xen: registering gsi 22 triggering 0 polarity 1
>     [    2.787723]   alloc irq_desc for 22 on node 0
>     [    2.788227]   alloc kstat_irqs on node 0
>     [    2.788787] xen: --> irq=22
>     [    2.789294] ohci_hcd 0000:00:03.2: PCI INT C -> GSI 22 (level, low) -> 
> IRQ 22
>     [    2.790538] ohci_hcd 0000:00:03.2: OHCI Host Controller
>     [    2.791066] ohci_hcd 0000:00:03.2: new USB bus registered, assigned 
> bus number 4
>     [    2.792174] ohci_hcd 0000:00:03.2: irq 22, io mem 0xfa102000
>     [    2.850062] usb usb4: New USB device found, idVendor=1d6b, 
> idProduct=0001
>     [    2.850566] usb usb4: New USB device strings: Mfr=3, Product=2, 
> SerialNumber=1
>     [    2.851581] usb usb4: Product: OHCI Host Controller
>     [    2.852005] usb usb4: Manufacturer: Linux 2.6.32-5-xen-amd64 ohci_hcd
>     [    2.852005] usb usb4: SerialNumber: 0000:00:03.2
>     [    2.854093] usb usb4: configuration #1 chosen from 1 choice
>     [    2.854793] hub 4-0:1.0: USB hub found
>     [    2.855334] hub 4-0:1.0: 2 ports detected
>     [    2.956031] ata3: SATA link down (SStatus 0 SControl 310)
>     [    3.276040] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
>     [    3.300331] ata4.00: ATA-8: SAMSUNG HD501LJ, CR100-11, max UDMA7
>     [    3.300834] ata4.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 
> 0/32)
>     [    3.308304] ata4.00: configured for UDMA/100
>     [    3.308982] scsi 3:0:0:0: Direct-Access     ATA      SAMSUNG HD501LJ  
> CR10 PQ: 0 ANSI: 5
>     [    3.628031] ata5: SATA link down (SStatus 0 SControl 310)
>     [    3.948039] ata6: SATA link down (SStatus 0 SControl 310)
>     [    3.964301] sata_sis 0000:00:05.0: version 1.0
>     [    3.964832] xen: registering gsi 17 triggering 0 polarity 1
>     [    3.965360] xen_allocate_pirq: returning irq 17 for gsi 17
>     [    3.965858] xen: --> irq=17
>     [    3.966356] Already setup the GSI :17
>     [    3.966853] sata_sis 0000:00:05.0: PCI INT A -> GSI 17 (level, low) -> 
> IRQ 17
>     [    3.967848] sata_sis 0000:00:05.0: Detected SiS 182/965L chipset
>     [    3.987551] scsi6 : sata_sis
>     [    3.988405] scsi7 : sata_sis
>     [    3.989439] ata7: SATA max UDMA/133 cmd 0x34b0 ctl 0x34a4 bmdma 0x3490 
> irq 17
>     [    3.990463] ata8: SATA max UDMA/133 cmd 0x34a8 ctl 0x34a0 bmdma 0x3498 
> irq 17
>     [    3.992764] sd 3:0:0:0: [sda] 976773168 512-byte logical blocks: (500 
> GB/465 GiB)
>     [    3.993866] sd 3:0:0:0: [sda] Write Protect is off
>     [    3.994392] sd 3:0:0:0: [sda] Mode Sense: 00 3a 00 00
>     [    3.994927] sd 3:0:0:0: [sda] Write cache: enabled, read cache: 
> enabled, doesn't support DPO or FUA
>     [    3.996916]  sda: sda1
>     [    4.035345] sd 3:0:0:0: [sda] Attached SCSI disk
>     [    4.308087] ata7: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>     [    4.316438] ata7.00: ATA-7: WDC WD800JD-55MUA1, 10.01E01, max UDMA/133
>     [    4.316939] ata7.00: 156301488 sectors, multi 16: LBA48 NCQ (depth 
> 0/32)
>     [    4.324426] ata7.00: configured for UDMA/133
>     [    4.325072] scsi 6:0:0:0: Direct-Access     ATA      WDC WD800JD-55MU 
> 10.0 PQ: 0 ANSI: 5
>     [    4.326791] sd 6:0:0:0: [sdb] 156301488 512-byte logical blocks: (80.0 
> GB/74.5 GiB)
>     [    4.327885] sd 6:0:0:0: [sdb] Write Protect is off
>     [    4.328358] sd 6:0:0:0: [sdb] Mode Sense: 00 3a 00 00
>     [    4.328957] sd 6:0:0:0: [sdb] Write cache: enabled, read cache: 
> enabled, doesn't support DPO or FUA
>     [    4.330226]  sdb: sdb1
>     [    4.339084] sd 6:0:0:0: [sdb] Attached SCSI disk
>     [    4.644065] ata8: SATA link down (SStatus 0 SControl 300)
>     [    5.552048] floppy0: no floppy controllers found
>     [    5.602342] device-mapper: uevent: version 1.0.3
>     [    5.604238] device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) 
> initialised: dm-devel@xxxxxxxxxx
>     udevd-work[79]: kernel-provided name 'dm-0' and NAME= 
> 'mapper/vg0-boole--root' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[79]: kernel-provided name 'dm-1' and NAME= 
> 'mapper/vg0-boole--swap' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     [    5.929616] PM: Starting manual resume from disk
>     [    5.930123] PM: Resume from partition 254:1
>     [    5.930648] PM: Checking hibernation image.
>     [    5.931436] PM: Error -22 checking image file
>     [    5.931935] PM: Resume from disk failed.
>     [    6.017481] kjournald starting.  Commit interval 5 seconds
>     [    6.018026] EXT3-fs: mounted filesystem with ordered data mode.
>     INIT: version 2.88 booting
>     Using makefile-style concurrent boot in runlevel S.
>     Starting the hotplug events dispatcher: udevd[    7.642726] udev: 
> starting version 154
>     .
>     Synthesizing the initial hotplug events...done.
>     Waiting for /dev to be fully populated...[    8.310862] input: Power 
> Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input2
>     [    8.311895] ACPI: Power Button [PWRB]
>     [    8.328198] input: Power Button as 
> /devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
>     [    8.329207] ACPI: Power Button [PWRF]
>     [    8.415220] processor LNXCPU:00: registered as cooling_device0
>     [    8.483916] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
>     [    8.615432] shpchp: Standard Hot Plug PCI Controller Driver version: 
> 0.4
>     [    9.126294] input: PC Speaker as /devices/platform/pcspkr/input/input4
>     [    9.142026] EDAC MC: Ver: 2.1.0 Jun  1 2010
>     [    9.202855] parport_pc 00:07: reported by Plug and Play ACPI
>     [    9.203480] parport0: PC-style at 0x378 (0x778), irq 7 [PCSPP,TRISTATE]
>     [    9.263445] EDAC amd64_edac:  Ver: 3.2.0 Jun  1 2010
>     [    9.264173] EDAC amd64: ECC is enabled by BIOS.
>     [    9.264729] EDAC MC: Rev E or earlier detected
>     [    9.265375] EDAC MC0: Giving out device to 'amd64_edac' 'RevF': DEV 
> 0000:00:18.2
>     [    9.266403] EDAC PCI0: Giving out device to module 'amd64_edac' 
> controller 'EDAC PCI controller': DEV '0000:00:18.2' (POLLED)
>     [    9.620988] Error: Driver 'pcspkr' is already registered, aborting...
>     [   12.152049] floppy0: no floppy controllers found
>     done.
>     Setting parameters of disc: (none).
>     Invalidating stale software suspend images... done.
>     %@Checking root file system...fsck from util-linux-ng 2.16.2
>     /dev/mapper/vg0-boole--root: clean, 80774/415344 files, 612601/1653760 
> blocks
>     done.
>     [   12.907049] EXT3 FS on dm-0, internal journal
>     Cleaning up ifupdown....
>     [   13.168353] loop: module loaded
>     Loading kernel modules...done.
>     Setting up networking....
>     Setting up LVM Volume Groups  Reading all physical volumes.  This may 
> take a while...
>       Found volume group "vg0" using metadata type lvm2
>       Found volume group "vg1" using metadata type lvm2
>       6 logical volume(s) in volume group "vg0" now active
>     udevd-work[379]: kernel-provided name 'dm-4' and NAME= 
> 'mapper/vg0-hahn--swap' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[376]: kernel-provided name 'dm-2' and NAME= 
> 'mapper/vg0-boole--data--local' disagree, please use SYMLINK+= or change the 
> kernel to provide the proper name
>     
>     udevd-work[378]: kernel-provided name 'dm-3' and NAME= 
> 'mapper/vg0-hahn--root' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[382]: kernel-provided name 'dm-6' and NAME= 
> 'mapper/vg1-stokes--swap' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[380]: kernel-provided name 'dm-5' and NAME= 
> 'mapper/vg0-hahn--data--local' disagree, please use SYMLINK+= or change the 
> kernel to provide the proper name
>     
>     udevd-work[376]: kernel-provided name 'dm-7' and NAME= 
> 'mapper/vg1-stokes--root' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[378]: kernel-provided name 'dm-8' and NAME= 
> 'mapper/vg1-stokes--data' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[379]: kernel-provided name 'dm-9' and NAME= 
> 'mapper/vg1-kepler--swap' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[376]: kernel-provided name 'dm-10' and NAME= 
> 'mapper/vg1-kepler--data' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[378]: kernel-provided name 'dm-11' and NAME= 
> 'mapper/vg1-kepler--root' disagree, please use SYMLINK+= or change the kernel 
> to provide the proper name
>     
>     udevd-work[379]: kernel-provided name 'dm-12' and NAME= 
> 'mapper/vg1-poisson--swap' disagree, please use SYMLINK+= or change the 
> kernel to provide the proper name
>     
>     udevd-work[380]: kernel-provided name 'dm-13' and NAME= 
> 'mapper/vg1-poisson--root' disagree, please use SYMLINK+= or change the 
> kernel to provide the proper name
>     
>     udevd-work[376]: kernel-provided name 'dm-14' and NAME= 
> 'mapper/vg1-hamilton--swap' disagree, please use SYMLINK+= or change the 
> kernel to provide the proper name
>     
>       11 logical volume(s) in volume group "vg1" now active
>     udevd-work[378]: kernel-provided name 'dm-15' and NAME= 
> 'mapper/vg1-hamilton--root' disagree, please use SYMLINK+= or change the 
> kernel to provide the proper name
>     
>     .
>     Activating lvm and md swap...udevd-work[376]: kernel-provided name 
> 'dm-16' and NAME= 'mapper/vg1-abel--swap' disagree, please use SYMLINK+= or 
> change the kernel to provide the proper name
>     
>     [   14.520553] Adding 974840k swap on /dev/mapper/vg0-boole--swap.  
> Priority:-1 extents:1 across:974840k 
>     done.
>     Checking file systems...fsck from util-linux-ng 2.16.2
>     /dev/mapper/vg0-boole--data--local: clean, 300462/1617472 files, 
> 4073213/6516736 blocks
>     done.
>     Mounting local filesystems...udevd-work[376]: kernel-provided name 'dm-2' 
> and NAME= 'mapper/vg0-boole--data--local' disagree, please use SYMLINK+= or 
> change the kernel to provide the proper name
>     
>     [   14.692746] kjournald starting.  Commit interval 5 seconds
>     [   14.693514] EXT3 FS on dm-2, internal journal
>     [   14.694018] EXT3-fs: mounted filesystem with ordered data mode.
>     done.
>     Activating swapfile swap...done.
>     Cleaning up temporary files....
>     Configuring network interfaces...[   15.334232] Bridge firewalling 
> registered
>     [   15.397696] device eth0 entered promiscuous mode
>     [   15.401931] r8169: eth0: link up
>     [   15.406393] device eth1 entered promiscuous mode
>     [   15.425604] e100 0000:00:0c.0: firmware: requesting 
> e100/d101m_ucode.bin
>     [   15.480924] ADDRCONF(NETDEV_UP): eth1: link is not ready
>     [   15.484299] e100: eth1 NIC Link is Up 100 Mbps Full Duplex
>     [   15.485780] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
>     [   15.491182] br0: port 2(eth1) entering learning state
>     [   15.491688] br0: port 1(eth0) entering learning state
>     
>     Waiting for br0 to get ready (MAXWAIT is 32 seconds).
>     Setting kernel variables ...done.
>     [   25.700012] eth0: no IPv6 routers present
>     [   25.820008] eth1: no IPv6 routers present
>     [   25.892009] br0: no IPv6 routers present
>     [   30.488018] br0: port 2(eth1) entering forwarding state
>     [   30.488552] br0: port 1(eth0) entering forwarding state
>     Internet Systems Consortium DHCP Client V3.1.3
>     Copyright 2004-2009 Internet Systems Consortium.
>     All rights reserved.
>     For info, please visit https://www.isc.org/software/dhcp/
>     
>     Listening on LPF/br0/00:02:b3:29:31:eb
>     Sending on   LPF/br0/00:02:b3:29:31:eb
>     Sending on   Socket/fallback
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 5
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 7
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 7
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 12
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 10
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 18
>     DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 2
>     No DHCPOFFERS received.
>     No working leases in persistent database - sleeping.
>     done.
>     Cleaning up temporary files....
>     Setting console screen modes and fonts.
>     cannot (un)set powersave mode
>     [9;30][14;30][   93.937149] fuse init (API version 7.13)
>     Setting sensors limits.
>     INIT: Entering runlevel: 2
>     Using makefile-style concurrent boot in runlevel 2.
>     udevd-work[481]: kernel-provided name 'evtchn' and NAME= 'xen/evtchn' 
> disagree, please use SYMLINK+= or change the kernel to provide the proper name
>     
>     [   94.359169] Event-channel device installed.
>     Starting enhanced syslogd: rsyslogd.
>     [   95.122279]   alloc irq_desc for 500 on node 0
>     [   95.122816]   alloc kstat_irqs on node 0
>     [   95.123433]   alloc irq_desc for 499 on node 0
>     [   95.123932]   alloc kstat_irqs on node 0
>     [   95.126221] XENBUS: Unable to read cpu state
>     Starting ACPI services....
>     Starting anac(h)ronistic cron: anacron.
>     Starting deferred execution scheduler: atd.
>     Starting periodic command scheduler: cron.
>     Starting system message bus: dbus.
>     Starting kerneloops:
>     Starting mail-transfer-agent: nullmailer.
>     Starting Xen daemons: xenfs xenstored xenconsoled xend.
>     Starting auto Xen domains: hamilton[  104.719747]   alloc irq_desc for 
> 498 on node 0
>     [  104.720022]   alloc kstat_irqs on node 0
>     [  105.453372]   alloc irq_desc for 497 on node 0
>     [  105.453909]   alloc kstat_irqs on node 0
>     [  105.535899] device vif1.0 entered promiscuous mode
>     [  105.555070] br0: port 3(vif1.0) entering learning state
>     [  107.190073] blkback: ring-ref 8, event-channel 8, protocol 2 
> (x86_32-abi)
>     [  107.190644]   alloc irq_desc for 496 on node 0
>     [  107.191141]   alloc kstat_irqs on node 0
>     [  107.210062] blkback: ring-ref 9, event-channel 9, protocol 2 
> (x86_32-abi)
>     [  107.210607]   alloc irq_desc for 495 on node 0
>     [  107.211104]   alloc kstat_irqs on node 0
>     [  107.250723]   alloc irq_desc for 494 on node 0
>     [  107.251226]   alloc kstat_irqs on node 0
>      poisson[  113.363323]   alloc irq_desc for 493 on node 0
>     [  113.363860]   alloc kstat_irqs on node 0
>     [  114.256144] device vif2.0 entered promiscuous mode
>     [  114.273273] br0: port 4(vif2.0) entering learning state
>     [  114.401420]   alloc irq_desc for 492 on node 0
>     [  114.401956]   alloc kstat_irqs on node 0
>     [  115.093754] blkback: ring-ref 8, event-channel 8, protocol 2 
> (x86_32-abi)
>     [  115.094334]   alloc irq_desc for 491 on node 0
>     [  115.094832]   alloc kstat_irqs on node 0
>     [  115.112689] blkback: ring-ref 9, event-channel 9, protocol 2 
> (x86_32-abi)
>     [  115.113236]   alloc irq_desc for 490 on node 0
>     [  115.113733]   alloc kstat_irqs on node 0
>     [  115.158579]   alloc irq_desc for 489 on node 0
>     [  115.159081]   alloc kstat_irqs on node 0
>     [  116.184011] vif1.0: no IPv6 routers present
>      stokes[  120.552156] br0: port 3(vif1.0) entering forwarding state
>     [  121.222354]   alloc irq_desc for 488 on node 0
>     [  121.222890]   alloc kstat_irqs on node 0
>     [  122.663290] device vif3.0 entered promiscuous mode
>     [  122.935537] br0: port 5(vif3.0) entering learning state
>     [  123.101861]   alloc irq_desc for 487 on node 0
>     [  123.102398]   alloc kstat_irqs on node 0
>     [  124.115613] blkback: ring-ref 8, event-channel 8, protocol 2 
> (x86_32-abi)
>     [  124.116222]   alloc irq_desc for 486 on node 0
>     [  124.116720]   alloc kstat_irqs on node 0
>     [  124.135739] blkback: ring-ref 9, event-channel 9, protocol 2 
> (x86_32-abi)
>     [  124.136320]   alloc irq_desc for 485 on node 0
>     [  124.136846]   alloc kstat_irqs on node 0
>     [  124.153937] blkback: ring-ref 10, event-channel 10, protocol 2 
> (x86_32-abi)
>     [  124.154485]   alloc irq_desc for 484 on node 0
>     [  124.154982]   alloc kstat_irqs on node 0
>     [  124.270923]   alloc irq_desc for 483 on node 0
>     [  124.271462]   alloc kstat_irqs on node 0
>     [  124.386590] vif2.0: no IPv6 routers present
>     [done].
>     [  129.272012] br0: port 4(vif2.0) entering forwarding state
>     [  133.636010] vif3.0: no IPv6 routers present
>     [  137.932012] br0: port 5(vif3.0) entering forwarding state
> 
> Here I start the domU that is supposed to use the PCI device:
> 
>     [  169.841776]   alloc irq_desc for 482 on node 0
>     [  169.842312]   alloc kstat_irqs on node 0
>     [  171.345662] device vif4.0 entered promiscuous mode
>     [  171.358478] br0: port 6(vif4.0) entering learning state
>     [  171.666476] pciback: vpci: 0000:00:02.7: assign to virtual slot 0
>     [  171.795253]   alloc irq_desc for 481 on node 0
>     [  171.795791]   alloc kstat_irqs on node 0
>     [  173.956696]   alloc irq_desc for 480 on node 0
>     [  173.957231]   alloc kstat_irqs on node 0
>     [  174.310130]   alloc irq_desc for 479 on node 0
>     [  174.310666]   alloc kstat_irqs on node 0
>     [  174.329246] blkback: ring-ref 770, event-channel 10, protocol 2 
> (x86_32-abi)
>     [  174.329798]   alloc irq_desc for 478 on node 0
>     [  174.330296]   alloc kstat_irqs on node 0
>     [  174.382985] blkback: ring-ref 771, event-channel 11, protocol 2 
> (x86_32-abi)
>     [  174.384144]   alloc irq_desc for 477 on node 0
>     [  174.384662]   alloc kstat_irqs on node 0
>     [  174.408827] blkback: ring-ref 772, event-channel 12, protocol 2 
> (x86_32-abi)
>     [  174.409379]   alloc irq_desc for 476 on node 0
>     [  174.409876]   alloc kstat_irqs on node 0
>     [  181.812029] vif4.0: no IPv6 routers present
>     [  186.356264] br0: port 6(vif4.0) entering forwarding state
> 
> Apparently the pciback does something.
> 
> Boot log for the domU:
> 
>     [    0.000000] Reserving virtual address space above 0xf5800000
>     [    0.000000] Initializing cgroup subsys cpuset
>     [    0.000000] Initializing cgroup subsys cpu
>     [    0.000000] Linux version 2.6.32-5-xen-686 (Debian 2.6.32-15) 
> (ben@xxxxxxxxxxxxxxx) (gcc version 4.3.5 (Debian 4.3.5-1) ) #1 SMP Tue Jun 1 
> 08:48:09 UTC 2010
>     [    0.000000] KERNEL supported cpus:
>     [    0.000000]   Intel GenuineIntel
>     [    0.000000]   AMD AuthenticAMD
>     [    0.000000]   NSC Geode by NSC
>     [    0.000000]   Cyrix CyrixInstead
>     [    0.000000]   Centaur CentaurHauls
>     [    0.000000]   Transmeta GenuineTMx86
>     [    0.000000]   Transmeta TransmetaCPU
>     [    0.000000]   UMC UMC UMC UMC
>     [    0.000000] ACPI in unprivileged domain disabled
>     [    0.000000] released 0 pages of unused memory
>     [    0.000000] BIOS-provided physical RAM map:
>     [    0.000000]  Xen: 0000000000000000 - 00000000000a0000 (usable)
>     [    0.000000]  Xen: 00000000000a0000 - 0000000000100000 (reserved)
>     [    0.000000]  Xen: 0000000000100000 - 000000001c800000 (usable)
>     [    0.000000] DMI not present or invalid.
>     [    0.000000] last_pfn = 0x1c800 max_arch_pfn = 0x1000000
>     [    0.000000] initial memory mapped : 0 - 033ff000
>     [    0.000000] init_memory_mapping: 0000000000000000-000000001c800000
>     [    0.000000] NX (Execute Disable) protection: active
>     [    0.000000]  0000000000 - 001c800000 page 4k
>     [    0.000000] kernel direct mapping tables up to 1c800000 @ 100000-1e9000
>     [    0.000000] RAMDISK: 01655000 - 02980000
>     [    0.000000] 0MB HIGHMEM available.
>     [    0.000000] 456MB LOWMEM available.
>     [    0.000000]   mapped low ram: 0 - 1c800000
>     [    0.000000]   low ram: 0 - 1c800000
>     [    0.000000]   node 0 low ram: 00000000 - 1c800000
>     [    0.000000]   node 0 bootmap 00002000 - 00005900
>     [    0.000000] (9 early reservations) ==> bootmem [0000000000 - 
> 001c800000]
>     [    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> 
> [0000000000 - 0000001000]
>     [    0.000000]   #1 [00029f5000 - 0002a0d000]   XEN PAGETABLES ==> 
> [00029f5000 - 0002a0d000]
>     [    0.000000]   #2 [0000001000 - 0000002000]    EX TRAMPOLINE ==> 
> [0000001000 - 0000002000]
>     [    0.000000]   #3 [0000006000 - 0000007000]       TRAMPOLINE ==> 
> [0000006000 - 0000007000]
>     [    0.000000]   #4 [0001000000 - 000152fb34]    TEXT DATA BSS ==> 
> [0001000000 - 000152fb34]
>     [    0.000000]   #5 [0001655000 - 0002980000]          RAMDISK ==> 
> [0001655000 - 0002980000]
>     [    0.000000]   #6 [0002980000 - 00029f5000]   XEN START INFO ==> 
> [0002980000 - 00029f5000]
>     [    0.000000]   #7 [0000100000 - 00001cd000]          PGTABLE ==> 
> [0000100000 - 00001cd000]
>     [    0.000000]   #8 [0000002000 - 0000006000]          BOOTMAP ==> 
> [0000002000 - 0000006000]
>     [    0.000000] Zone PFN ranges:
>     [    0.000000]   DMA      0x00000000 -> 0x00001000
>     [    0.000000]   Normal   0x00001000 -> 0x0001c800
>     [    0.000000]   HighMem  0x0001c800 -> 0x0001c800
>     [    0.000000] Movable zone start PFN for each node
>     [    0.000000] early_node_map[2] active PFN ranges
>     [    0.000000]     0: 0x00000000 -> 0x000000a0
>     [    0.000000]     0: 0x00000100 -> 0x0001c800
>     [    0.000000] On node 0 totalpages: 116640
>     [    0.000000] free_area_init_node: node 0, pgdat c13eea80, node_mem_map 
> c2a0d000
>     [    0.000000]   DMA zone: 32 pages used for memmap
>     [    0.000000]   DMA zone: 0 pages reserved
>     [    0.000000]   DMA zone: 3968 pages, LIFO batch:0
>     [    0.000000]   Normal zone: 880 pages used for memmap
>     [    0.000000]   Normal zone: 111760 pages, LIFO batch:31
>     [    0.000000] Using APIC driver default
>     [    0.000000] SFI: Simple Firmware Interface v0.7 
> http://simplefirmware.org
>     [    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
>     [    0.000000] Local APIC disabled by BIOS -- you can enable it with 
> "lapic"
>     [    0.000000] APIC: disable apic facility
>     [    0.000000] nr_irqs_gsi: 16
>     [    0.000000] PM: Registered nosave memory: 00000000000a0000 - 
> 0000000000100000
>     [    0.000000] Allocating PCI resources starting at 1c800000 (gap: 
> 1c800000:e3800000)
>     [    0.000000] Booting paravirtualized kernel on Xen
>     [    0.000000] Xen version: 4.0.0 (preserve-AD)
>     [    0.000000] NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1
>     [    0.000000] PERCPU: Embedded 15 pages/cpu @c2da1000 s37496 r0 d23944 
> u65536
>     [    0.000000] pcpu-alloc: s37496 r0 d23944 u65536 alloc=16*4096
>     [    0.000000] pcpu-alloc: [0] 0 
>     [    0.000000] trying to map vcpu_info 0 at c2da2010, mfn 29041, offset 16
>     [    0.000000] cpu 0 using vcpu_info at c2da2010
>     [    0.000000] Xen: using vcpu_info placement
>     [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  
> Total pages: 115728
>     [    0.000000] Kernel command line: root=/dev/xvda ro iommu=soft 
> swiotlb=force
>     [    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
>     [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 
> bytes)
>     [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 
> bytes)
>     [    0.000000] Enabling fast FPU save and restore... done.
>     [    0.000000] Enabling unmasked SIMD FPU exception support... done.
>     [    0.000000] Initializing CPU#0
>     [    0.000000] DMA: Placing 64MB software IO TLB between c2e13000 - 
> c6e13000
>     [    0.000000] DMA: software IO TLB at phys 0x2e13000 - 0x6e13000
>     [    0.000000] xen_swiotlb_fixup: buf=c2e13000 size=67108864
>     [    0.000000] xen_swiotlb_fixup: buf=c6e73000 size=32768
>     [    0.000000] Initializing HighMem for node 0 (00000000:00000000)
>     [    0.000000] Memory: 369840k/466944k available (2619k kernel code, 
> 96424k reserved, 1446k data, 400k init, 0k highmem)
>     [    0.000000] virtual kernel memory layout:
>     [    0.000000]     fixmap  : 0xf5556000 - 0xf57ff000   (2724 kB)
>     [    0.000000]     pkmap   : 0xf5000000 - 0xf5200000   (2048 kB)
>     [    0.000000]     vmalloc : 0xdd000000 - 0xf4ffe000   ( 383 MB)
>     [    0.000000]     lowmem  : 0xc0000000 - 0xdc800000   ( 456 MB)
>     [    0.000000]       .init : 0xc13f9000 - 0xc145d000   ( 400 kB)
>     [    0.000000]       .data : 0xc128ee8d - 0xc13f8790   (1446 kB)
>     [    0.000000]       .text : 0xc1000000 - 0xc128ee8d   (2619 kB)
>     [    0.000000] SLUB: Genslabs=13, HWalign=64, Order=0-3, MinObjects=0, 
> CPUs=1, Nodes=1
>     [    0.000000] Hierarchical RCU implementation.
>     [    0.000000] NR_IRQS:1536
>     [    0.000000] Console: colour dummy device 80x25
>     [    0.000000] console [tty0] enabled
>     [    0.000000] console [hvc0] enabled
>     [    0.000000] Xen: using vcpuop timer interface
>     [    0.000000] installing Xen timer for CPU 0
>     [    0.000000] Detected 1800.063 MHz processor.
>     [    0.004000] Calibrating delay loop (skipped), value calculated using 
> timer frequency.. 3600.12 BogoMIPS (lpj=7200252)
>     [    0.004000] Security Framework initialized
>     [    0.004000] SELinux:  Disabled at boot.
>     [    0.004000] Mount-cache hash table entries: 512
>     [    0.004000] Initializing cgroup subsys ns
>     [    0.004000] Initializing cgroup subsys cpuacct
>     [    0.004000] Initializing cgroup subsys devices
>     [    0.004000] Initializing cgroup subsys freezer
>     [    0.004000] Initializing cgroup subsys net_cls
>     [    0.004000] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 
> bytes/line)
>     [    0.004000] CPU: L2 Cache: 128K (64 bytes/line)
>     [    0.004000] Performance Events: AMD PMU driver.
>     [    0.004000] ... version:                0
>     [    0.004000] ... bit width:              48
>     [    0.004000] ... generic registers:      4
>     [    0.004000] ... value mask:             0000ffffffffffff
>     [    0.004000] ... max period:             00007fffffffffff
>     [    0.004000] ... fixed-purpose events:   0
>     [    0.004000] ... event mask:             000000000000000f
>     [    0.004000] SMP alternatives: switching to UP code
>     [    0.012688] Freeing SMP alternatives: 14k freed
>     [    0.013059] Brought up 1 CPUs
>     [    0.013084] CPU0 attaching NULL sched-domain.
>     [    0.013277] devtmpfs: initialized
>     [    0.014044] Grant table initialized
>     [    0.014058] regulator: core version 0.5
>     [    0.014148] NET: Registered protocol family 16
>     [    0.016725] PCI: setting up Xen PCI frontend stub
>     [    0.017626] bio: create slab <bio-0> at 0
>     [    0.017736] ACPI: Interpreter disabled.
>     [    0.024075] xen_balloon: Initialising balloon driver with page order 0.
>     [    0.024145] vgaarb: loaded
>     [    0.024275] PCI: System does not support PCI
>     [    0.028001] PCI: System does not support PCI
>     [    0.028099] Switching to clocksource xen
>     [    0.030486] pnp: PnP ACPI: disabled
>     [    0.030528] PnPBIOS: Disabled
>     [    0.030955] NET: Registered protocol family 2
>     [    0.031966] IP route cache hash table entries: 4096 (order: 2, 16384 
> bytes)
>     [    0.032787] TCP established hash table entries: 16384 (order: 5, 
> 131072 bytes)
>     [    0.032928] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
>     [    0.033035] TCP: Hash tables configured (established 16384 bind 16384)
>     [    0.033047] TCP reno registered
>     [    0.033185] NET: Registered protocol family 1
>     [    0.033279] Unpacking initramfs...
>     [    0.077224] Freeing initrd memory: 19628k freed
>     [    0.091372] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
>     [    0.091397] DMA: Placing 64MB software IO TLB between c2e13000 - 
> c6e13000
>     [    0.091408] DMA: software IO TLB at phys 0x2e13000 - 0x6e13000
>     [    0.091516] platform rtc_cmos: registered platform RTC device (no PNP 
> device found)
>     [    0.091780] audit: initializing netlink socket (disabled)
>     [    0.091804] type=2000 audit(1275685176.668:1): initialized
>     [    0.092860] HugeTLB registered 2 MB page size, pre-allocated 0 pages
>     [    0.095217] VFS: Disk quotas dquot_6.5.2
>     [    0.095316] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
>     [    0.095445] msgmni has been set to 761
>     [    0.095771] alg: No test for stdrng (krng)
>     [    0.095878] Block layer SCSI generic (bsg) driver version 0.4 loaded 
> (major 253)
>     [    0.095890] io scheduler noop registered
>     [    0.095898] io scheduler anticipatory registered
>     [    0.095906] io scheduler deadline registered
>     [    0.096083] io scheduler cfq registered (default)
>     [    0.112222] pcifront pci-0: Installing PCI frontend
>     [    0.112335] pcifront pci-0: Creating PCI Frontend Bus 0000:00
>     [    0.116512] isapnp: ISA Plug & Play support disabled
>     [    0.123844] registering netback
>     [    0.126404] Linux agpgart interface v0.103
>     [    0.126563] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
>     [    0.126966] PNP: No PS/2 controller found. Probing ports directly.
>     [    0.127795] i8042.c: No controller found.
>     [    0.127869] mice: PS/2 mouse device common for all mice
>     [    0.128147] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
>     [    0.128245] cpuidle: using governor ladder
>     [    0.128253] cpuidle: using governor menu
>     [    0.128264] No iBFT detected.
>     [    0.128701] TCP cubic registered
>     [    0.228093] NET: Registered protocol family 10
>     [    0.228699] lo: Disabled Privacy Extensions
>     [    0.229113] Mobile IPv6
>     [    0.229136] NET: Registered protocol family 17
>     [    0.229193] Using IPI No-Shortcut mode
>     [    0.229353] PM: Resume from disk failed.
>     [    0.229365] registered taskstats version 1
>     [    0.229426] XENBUS: Device with no driver: device/vbd/51712
>     [    0.229455] XENBUS: Device with no driver: device/vbd/51728
>     [    0.229480] XENBUS: Device with no driver: device/vbd/51744
>     [    0.229488] XENBUS: Device with no driver: device/vif/0
>     [    0.229497] XENBUS: Device with no driver: device/console/0
>     [    0.229529] 
> /build/buildd-linux-2.6_2.6.32-15-i386-fb7Hfg/linux-2.6-2.6.32/debian/build/source_i386_xen/drivers/rtc/hctosys.c:
>  unable to open rtc device (rtc0)
>     [    0.229571] Initalizing network drop monitor service
>     [    0.229645] Freeing unused kernel memory: 400k freed
>     [    0.233197] Write protecting the kernel text: 2620k
>     [    0.233595] Write protecting the kernel read-only data: 964k
>     [    0.287600] udev: starting version 154
>     [    0.404841] Initialising Xen virtual ethernet driver.
>     [    0.527189] blkfront: xvda: barriers enabled
>     [    0.530347]  xvda: unknown partition table
>     [    0.604426] blkfront: xvdc: barriers enabled
>     [    0.607760]  xvdc: unknown partition table
>     [    0.629003] blkfront: xvdb: barriers enabled
>     [    0.632120]  xvdb: unknown partition table
>     [    0.685270] Setting capacity to 579076096
>     [    0.685294] xvdc: detected capacity change from 0 to 296486961152
>     [    0.840610] PM: Starting manual resume from disk
>     [    0.840629] PM: Resume from partition 202:16
>     [    0.840633] PM: Checking hibernation image.
>     [    0.841455] PM: Error -22 checking image file
>     [    0.841460] PM: Resume from disk failed.
>     [    0.901114] kjournald starting.  Commit interval 5 seconds
>     [    0.901148] EXT3-fs: mounted filesystem with ordered data mode.
>     [    2.311864] udev: starting version 154
>     [    3.063457] input: PC Speaker as /devices/platform/pcspkr/input/input0
>     [    3.113060] Error: Driver 'pcspkr' is already registered, aborting...
>     [    3.399478] Adding 655352k swap on /dev/xvdb.  Priority:-1 extents:1 
> across:655352k SS
>     [    3.583101] EXT3 FS on xvda, internal journal
>     [  977.287888] kjournald starting.  Commit interval 5 seconds
>     [  977.295032] EXT3 FS on xvdc, internal journal
>     [  977.295054] EXT3-fs: mounted filesystem with ordered data mode.
>     [  979.065859] RPC: Registered udp transport module.
>     [  979.065877] RPC: Registered tcp transport module.
>     [  979.065885] RPC: Registered tcp NFSv4.1 backchannel transport module.
>     [  979.169060] Slow work thread pool: Starting up
>     [  979.169160] Slow work thread pool: Ready
>     [  979.169252] FS-Cache: Loaded
>     [  979.264207] FS-Cache: Netfs 'nfs' registered for caching
>     [  979.320718] Installing knfsd (copyright (C) 1996 okir@xxxxxxxxxxxx).
>     [  979.816552] fuse init (API version 7.13)
>     [  980.445821] svc: failed to register lockdv1 RPC service (errno 97).
>     [  980.448618] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state 
> recovery directory
>     [  980.490135] NFSD: starting 90-second grace period
>     [  989.240036] eth0: no IPv6 routers present
> 
> But lspci doesn't show anything and /sys/bus/pci/devices/ is empty.
> 
> 
> Regards,
>  Thomas



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