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Re: [Xen-devel] Nested Virtualisation and UEFI



On Fri, Sep 04, 2015 at 03:17:38AM -0600, Jan Beulich wrote:
> >>> On 04.09.15 at 10:47, <james-xen@xxxxxxxxxxxxxx> wrote:
> > I am trying to get a nested virtualisation environment working where it is 
> > started with bios='ovmf'.  When my 
> > hvm configuration is bios='seabios' and I use the xen.gz everything starts 
> > correctly.  Using the xen.efi from 
> > the same build when bios='ovmf' causesthe guest Linux kernel to block when 
> > accessing the emulated disk 
> > controller (scsi or ide) as below.
> > 
> > Is this nested configuration expected to work?
> 
> I don't think there's any expectation either way. You may well be the
> first one to every try. I wouldn't even dare to guess whether the
> issue is in the BIOS, Xen, qemu, or any combination thereof.
> 
> >  If so, are there other 
> > things that need to change apart from 
> > switching the bios configuration value?  I can provide more information 
> > from 
> > the guest XEN / kernel logs or the 
> > guest configuration file if that would be useful.
> > 
> > [   31.848214] ata1: lost interrupt (Status 0x50)
> 
> This might hint at a problem with interrupts. A full, maximally verbose
> log (hypervisor and kernel) may tell.
> 
> > [   31.855823] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 
> > frozen
> > [   31.866516] ata1.00: failed command: READ DMA
> > [   31.873472] ata1.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 
> > 4096 in
> > [   31.873472]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
> > (timeout)
> > [   31.896759] ata1.00: status: { DRDY }
> > [   31.902526] ata1: soft resetting link
> > [   32.076309] ata1.00: configured for MWDMA2
> > [   32.083559] ata1.00: device reported invalid CHS sector 0
> > [   32.094014] ata1: EH complete
> 
> Whereas this might also hint at the BIOS reporting an IOMMU when
> there is none, or some other issue with setting up DMA. Again, full
> logs may provide some insight.
> 
> Jan
> 

I was worried about spamming the list by sending the full logs but if that is 
likely to have the most useful 
information then here we go...

xen-4.4.3.gz is installed as bootx64.efi but that fails and so it drops to the 
firmware where I start a shell 
and then execute xen-4.5.1.efi.  I've just noticed the firmware sees the system 
with 16Gb RAM despite the guest 
configuration being memory=20480 but changing that to 16384 did not change the 
behaviour.  Xen also seems to 
only see 1 cpu when the configuration is vcpus=4.  iommu=1 is set on the 
command line because this is an image 
from a physical server but no iommu is detected, changing to 0 has no effect.  
If I boot the hvm without xen 
using the same kernel I can get to the ramdisk shell, the log for that boot is 
the second one below.

The complete xen configuration file is:
name = "nvdom0"
builder = "hvm"
vif = [
    "bridge=ovswan,mac=00:16:3e:01:3d:23",
    "bridge=ovslan,mac=00:16:3e:02:3d:23"
]
vcpus = 4
acpi = 1
apic = 1
pae = 1
xen_platform_pci = 0
nestedhvm = 1
#memory = 16384
memory = 20480
#memory = 24576
vga = "stdvga"
videoram = 16
disk = [
    "phy:/dev/zvol/data/sda,hda,w",
    "phy:/dev/zvol/data/sdb,sda,w"
]
boot = "c"
sdl = 0
vnc = 1
vnclisten = "0.0.0.0"
serial = "pty"
keymap = "en-gb"
usb = 1
usbdevice = "tablet"
on_poweroff = "destroy"
on_crash = "preserve"
on_reboot = "restart"

#bios = "seabios"
bios = "ovmf"
device_model_version = "qemu-xen"


Boot Failed. EFI Floppy
Boot Failed. EFI Floppy 1
Xen 4.4.3 (c/s Thu Aug 20 16:19:38 2015 +0200 git:27b82b0-dirty) EFI loader
No configuration file found.
Boot Succeeded - EFI Hard Drive

 HVM domU
                                                     3.09 GHz
 4.5.0                                               16384 MB RAM


   Continue                                              This selection will
   Select Language            <Standard English>         take you to the Boot
   Boot Manager                                          Manager
   Device Manager
   Boot Maintenance Manager


  =Move Highlight         <Enter>=Select Entry


ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââÄ
â                                Boot Manager                                  â
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ

                                                         Device Path :
   Boot Option Menu                                      MemoryMapped(0xB,0x900
                                                         000,0x10FFFFF)/FvFile(
   EFI Floppy                                            7C04A583-9E3E-4F1C-AD6
   EFI Floppy 1                                          5-E05268D0B4D1)
   EFI Hard Drive
   EFI Internal Shell

    and  to change option, ENTER to select an
   option, ESC to exit



ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââÄ
â                                                                              â
â =Move Highlight         <Enter>=Select Entry      Esc=Exit                   â
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ


UEFI Interactive Shell v2.1
EDK II
UEFI v2.40 (EDK II, 0x00010000)
Mapping table
      FS0: Alias(s):HD7a1:;BLK3:
          
PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)/HD(1,GPT,49C19AAD-E6FF-478E-8475-259F2C5B587B,0x800,0x100000)
     BLK2: Alias(s):
          PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)
     BLK4: Alias(s):
          
PciRoot(0x0)/Pci(0x1,0x1)/Ata(0x0)/HD(2,GPT,C20D0CA8-DEBA-4516-9007-E07462A8C7B4,0x100800,0x6FF000)
     BLK0: Alias(s):
          PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x0)
     BLK1: Alias(s):
          PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x1)


Press ESC in 4 seconds to skip startup.nsh or any other key to continue.
Shell> fs0:

FS0:\> cd EFI\Xen
FS0:\EFI\Xen\> cd
FS0:\EFI\Xen\
FS0:\EFI\Xen\> xen-4.5.1.efi
Xen 4.5.1 (c/s ) EFI loader
Using configuration file 'xen.cfg'
vmlinuz: 0x00000000ecdf2000-0x00000000ed4373d0
initrd.img: 0x00000000eac52000-0x00000000ebfffe4d
 __  __            _  _    ____   _
 \ \/ /___ _ __   | || |  | ___| / |
  \  // _ \ '_ \  | || |_ |___ \ | |
  /  \  __/ | | | |__   _| ___) || |
 /_/\_\___|_| |_|    |_|(_)____(_)_|

(XEN) Xen version 4.5.1 (@dingwall.me.uk) (x86_64-pc-linux-gnu-gcc (Gentoo 
4.8.4 p1.6, pie-0.6.1) 4.8.4) debug=n 
Wed Aug 26 09:42:27 BST 2015
(XEN) Latest ChangeSet:
(XEN) Bootloader: EFI
(XEN) Command line: xsave=0 iommu=1 basevideo console=vga,com1 com1=115200,8n1 
dom0_max_vcpus=4 
dom0_mem=max:1664m tmem tmem_dedup=on tmem_compress=on
(XEN) Video information:
(XEN)  VGA is graphics mode 800x600, 32 bpp
(XEN) Disc information:
(XEN)  Found 0 MBR signatures
(XEN)  Found 1 EDD information structures
(XEN) EFI RAM map:
(XEN)  0000000000000000 - 000000000009f000 (usable)
(XEN)  000000000009f000 - 00000000000a0000 (ACPI NVS)
(XEN)  0000000000100000 - 00000000eecf5000 (usable)
(XEN)  00000000eecf5000 - 00000000eee44000 (reserved)
(XEN)  00000000eee44000 - 00000000efec4000 (usable)
(XEN)  00000000efec4000 - 00000000eff18000 (reserved)
(XEN)  00000000eff18000 - 00000000eff22000 (usable)
(XEN)  00000000eff22000 - 00000000eff24000 (ACPI data)
(XEN)  00000000eff24000 - 00000000eff28000 (ACPI NVS)
(XEN)  00000000eff28000 - 00000000effd0000 (usable)
(XEN)  00000000effd0000 - 00000000efff0000 (reserved)
(XEN)  00000000efff0000 - 00000000f0000000 (usable)
(XEN)  0000000100000000 - 000000050eded000 (usable)
(XEN) ACPI: System description tables not found
(XEN) System RAM: 20459MB (20950796kB)
(XEN) Domain heap initialised
(XEN) Found and enabled local APIC!
(XEN) Not enabling x2APIC: depends on iommu_supports_eim.
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 3093.178 MHz processor.
(XEN) Initing memory sharing.
(XEN) I/O virtualisation disabled
(XEN) Platform timer is 1.193MHz PIT
(XEN) Allocated console ring of 16 KiB.
(XEN) VMX: Supported advanced features:
(XEN)  - APIC MMIO access virtualisation
(XEN)  - APIC TPR shadow
(XEN)  - Extended Page Tables (EPT)
(XEN)  - Virtual-Processor Identifiers (VPID)
(XEN)  - MSR direct-access bitmap
(XEN)  - Unrestricted Guest
(XEN) HVM: ASIDs enabled.
(XEN) HVM: VMX enabled
(XEN) HVM: Hardware Assisted Paging (HAP) detected
(XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB
(XEN) Brought up 1 CPUs
(XEN) tmem: initialized comp=1 dedup=1 tze=0
(XEN) xenoprof: Initialization failed. Intel processor family 6 model 58is not 
supported
(XEN) Dom0 has maximum 208 PIRQs
(XEN) *** LOADING DOMAIN 0 ***
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1ff4000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000438000000->000000043c000000 (404562 pages to be 
allocated)
(XEN)  Init. ramdisk: 000000050d852000->000000050ebffe4d
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff81000000->ffffffff81ff4000
(XEN)  Init. ramdisk: 0000000000000000->0000000000000000
(XEN)  Phys-Mach map: ffffffff81ff4000->ffffffff82334000
(XEN)  Start info:    ffffffff82334000->ffffffff823344b4
(XEN)  Page tables:   ffffffff82335000->ffffffff8234a000
(XEN)  Boot stack:    ffffffff8234a000->ffffffff8234b000
(XEN)  TOTAL:         ffffffff80000000->ffffffff82400000
(XEN)  ENTRY ADDRESS: ffffffff81d3a1f0
(XEN) Dom0 has maximum 4 VCPUs
(XEN) Scrubbing Free RAM on 1 nodes using 1 CPUs
(XEN) 
..................................................................................................................................................................done.
(XEN) Initial low memory virq threshold set at 0x4000 pages.
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to 
Xen)
(XEN) Freed 316kB init memory.
mapping kernel into physical memory
about to get started...
[    0.000000] PAT configuration [0-7]: WB  WT  UC- UC  WC  WP  UC  UC
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.19.0-27-generic (root@localhost) (gcc version 
4.8.4 (Ubuntu 
4.8.4-2ubuntu1~14.04) ) #30~14.04.1 SMP Wed Sep 2 16:12:37 BST 2015 (Ubuntu 
3.19.0-27.29~14.04.1-generic 
3.19.8-ckt5)
[    0.000000] Command line: root=/dev/loop0 ro console=hvc0 console=tty1 
earlyprintk=xen nomodeset tmem 
break=modules
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] Released 0 page(s)
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x000000000009efff] usable
[    0.000000] Xen: [mem 0x000000000009f000-0x000000000009ffff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x0000000068060fff] usable
[    0.000000] Xen: [mem 0x0000000068061000-0x00000000eecf4fff] unusable
[    0.000000] Xen: [mem 0x00000000eecf5000-0x00000000eee43fff] reserved
[    0.000000] Xen: [mem 0x00000000eee44000-0x00000000efec3fff] unusable
[    0.000000] Xen: [mem 0x00000000efec4000-0x00000000eff17fff] reserved
[    0.000000] Xen: [mem 0x00000000eff18000-0x00000000eff21fff] unusable
[    0.000000] Xen: [mem 0x00000000eff22000-0x00000000eff23fff] ACPI data
[    0.000000] Xen: [mem 0x00000000eff24000-0x00000000eff27fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000eff28000-0x00000000effcffff] unusable
[    0.000000] Xen: [mem 0x00000000effd0000-0x00000000effeffff] reserved
[    0.000000] Xen: [mem 0x00000000efff0000-0x00000000efffffff] unusable
[    0.000000] Xen: [mem 0x00000000fee00000-0x00000000feefffff] reserved
[    0.000000] Xen: [mem 0x0000000100000000-0x000000050edecfff] unusable
[    0.000000] bootconsole [xenboot0] enabled
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] efi: EFI v2.40 by EDK II
[    0.000000] efi:  SMBIOS=0xeed00000
[    0.000000] efi: EFI_MEMMAP is not enabled.
[    0.000000] esrt: ESRT header is not in the memory map.
[    0.000000] SMBIOS 2.7 present.
[    0.000000] AGP: No AGP bridge found
[    0.000000] e820: last_pfn = 0x68061 max_arch_pfn = 0x400000000
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[    0.000000] init_memory_mapping: [mem 0x67e00000-0x67ffffff]
[    0.000000] init_memory_mapping: [mem 0x60000000-0x67dfffff]
[    0.000000] init_memory_mapping: [mem 0x40000000-0x5fffffff]
[    0.000000] init_memory_mapping: [mem 0x00100000-0x3fffffff]
[    0.000000] init_memory_mapping: [mem 0x68000000-0x68060fff]
[    0.000000] RAMDISK: [mem 0x04000000-0x053adfff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: System description tables not found
[    0.000000] NUMA turned off
[    0.000000] Faking a node at [mem 0x0000000000000000-0x0000000068060fff]
[    0.000000] NODE_DATA(0) allocated [mem 0x67cd1000-0x67cd5fff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00001000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0x68060fff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00001000-0x0009efff]
[    0.000000]   node   0: [mem 0x00100000-0x68060fff]
[    0.000000] Initmem setup node 0 [mem 0x00001000-0x68060fff]
[    0.000000] p2m virtual area at ffffc90000000000, size is 40000000
[    0.000000] Remapped 97 page(s)
[    0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[    0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] e820: [mem 0xf0000000-0xfedfffff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.5.1 (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:1 
nr_node_ids:1
[    0.000000] PERCPU: Embedded 30 pages/cpu @ffff880067600000 s85888 r8192 
d28800 u2097152
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total 
pages: 419304
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: root=/dev/loop0 ro console=hvc0 
console=tty1 earlyprintk=xen nomodeset 
tmem break=modules
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 00000000c0000081 from 
0xe023e00800000000 to 0x0023001000000000.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 00000000c0000082 from 
0xffff82d080453000 to 0xffffffff817be150.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 00000000c0000083 from 
0xffff82d080453080 to 0xffffffff817c0750.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 0000000000000174 from 
0x000000000000e008 to 0x0000000000000010.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 0000000000000175 from 
0xffff82d080457fc0 to 0x0000000000000000.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 0000000000000176 from 
0xffff82d0802240a0 to 0xffffffff817c0a60.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 00000000c0000083 from 
0xffff82d080453080 to 0xffffffff817c0ca0.
(XEN) traps.c:2589:d0v0 Domain attempted WRMSR 00000000c0000084 from 
0x0000000000074700 to 0x0000000000047700.
[    0.000000] software IO TLB [mem 0x61800000-0x65800000] (64MB) mapped at 
[ffff880061800000-ffff8800657fffff]
[    0.000000] Memory: 1565680K/1703932K available (7949K kernel code, 1167K 
rwdata, 3748K rodata, 1404K init, 
1284K bss, 138252K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU dyntick-idle grace-period acceleration is enabled.
[    0.000000]  RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS:16640 nr_irqs:32 16
[    0.000000] xen:events: Using FIFO-based ABI
[    0.000000]  Offload RCU callbacks from all CPUs
[    0.000000]  Offload RCU callbacks from CPUs: 0.
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty1] enabled
[    0.000000] bootconsole [xenboot0] disabled
[    0.000000] PAT configuration [0-7]: WB  WT  UC- UC  WC  WP  UC  UC
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.19.0-27-generic (root@localhost) (gcc version 
4.8.4 (Ubuntu 
4.8.4-2ubuntu1~14.04) ) #30~14.04.1 SMP Wed Sep 2 16:12:37 BST 2015 (Ubuntu 
3.19.0-27.29~14.04.1-generic 
3.19.8-ckt5)
[    0.000000] Command line: root=/dev/loop0 ro console=hvc0 console=tty1 
earlyprintk=xen nomodeset break=modules
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] Released 0 page(s)
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x000000000009efff] usable
[    0.000000] Xen: [mem 0x000000000009f000-0x000000000009ffff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x0000000068060fff] usable
[    0.000000] Xen: [mem 0x0000000068061000-0x00000000eecf4fff] unusable
[    0.000000] Xen: [mem 0x00000000eecf5000-0x00000000eee43fff] reserved
[    0.000000] Xen: [mem 0x00000000eee44000-0x00000000efec3fff] unusable
[    0.000000] Xen: [mem 0x00000000efec4000-0x00000000eff17fff] reserved
[    0.000000] Xen: [mem 0x00000000eff18000-0x00000000eff21fff] unusable
[    0.000000] Xen: [mem 0x00000000eff22000-0x00000000eff23fff] ACPI data
[    0.000000] Xen: [mem 0x00000000eff24000-0x00000000eff27fff] ACPI NVS
[    0.000000] Xen: [mem 0x00000000eff28000-0x00000000effcffff] unusable
[    0.000000] Xen: [mem 0x00000000effd0000-0x00000000effeffff] reserved
[    0.000000] Xen: [mem 0x00000000efff0000-0x00000000efffffff] unusable
[    0.000000] Xen: [mem 0x00000000fee00000-0x00000000feefffff] reserved
[    0.000000] Xen: [mem 0x0000000100000000-0x000000050edecfff] unusable
[    0.000000] bootconsole [xenboot0] enabled
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] efi: EFI v2.40 by EDK II
[    0.000000] efi:  SMBIOS=0xeed00000
[    0.000000] efi: EFI_MEMMAP is not enabled.
[    0.000000] esrt: ESRT header is not in the memory map.
[    0.000000] SMBIOS 2.7 present.
[    0.000000] AGP: No AGP bridge found
[    0.000000] e820: last_pfn = 0x68061 max_arch_pfn = 0x400000000
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[    0.000000] init_memory_mapping: [mem 0x67e00000-0x67ffffff]
[    0.000000] init_memory_mapping: [mem 0x60000000-0x67dfffff]
[    0.000000] init_memory_mapping: [mem 0x40000000-0x5fffffff]
[    0.000000] init_memory_mapping: [mem 0x00100000-0x3fffffff]
[    0.000000] init_memory_mapping: [mem 0x68000000-0x68060fff]
[    0.000000] RAMDISK: [mem 0x04000000-0x053adfff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: System description tables not found
[    0.000000] NUMA turned off
[    0.000000] Faking a node at [mem 0x0000000000000000-0x0000000068060fff]
[    0.000000] NODE_DATA(0) allocated [mem 0x67cd1000-0x67cd5fff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00001000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0x68060fff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00001000-0x0009efff]
[    0.000000]   node   0: [mem 0x00100000-0x68060fff]
[    0.000000] Initmem setup node 0 [mem 0x00001000-0x68060fff]
[    0.000000] p2m virtual area at ffffc90000000000, size is 40000000
[    0.000000] Remapped 97 page(s)
[    0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[    0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] e820: [mem 0xf0000000-0xfedfffff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.5.1 (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:1 
nr_node_ids:1
[    0.000000] PERCPU: Embedded 30 pages/cpu @ffff880067600000 s85888 r8192 
d28800 u2097152
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total 
pages: 419304
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: root=/dev/loop0 ro console=hvc0 
console=tty1 earlyprintk=xen nomodeset 
tmem break=modules
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] software IO TLB [mem 0x61800000-0x65800000] (64MB) mapped at 
[ffff880061800000-ffff8800657fffff]
[    0.000000] Memory: 1565680K/1703932K available (7949K kernel code, 1167K 
rwdata, 3748K rodata, 1404K init, 
1284K bss, 138252K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU dyntick-idle grace-period acceleration is enabled.
[    0.000000]  RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS:16640 nr_irqs:32 16
[    0.000000] xen:events: Using FIFO-based ABI
[    0.000000]  Offload RCU callbacks from all CPUs
[    0.000000]  Offload RCU callbacks from CPUs: 0.
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty1] enabled
[    0.000000] bootconsole [xenboot0] disabled
[    0.000000] console [hvc0] enabled
[    0.000000] installing Xen timer for CPU 0
[    0.000000] tsc: Detected 3093.178 MHz processor
[    0.008000] Calibrating delay loop (skipped), value calculated using timer 
frequency.. 6186.35 BogoMIPS 
(lpj=12372712)
[    0.011695] pid_max: default: 32768 minimum: 301
[    0.012409] Security Framework initialized
[    0.016036] AppArmor: AppArmor initialized
[    0.020007] Yama: becoming mindful.
[    0.024536] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.028927] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.032372] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.036031] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)
[    0.040365] Initializing cgroup subsys memory
[    0.044025] Initializing cgroup subsys devices
[    0.048016] Initializing cgroup subsys freezer
[    0.052018] Initializing cgroup subsys net_cls
[    0.056013] Initializing cgroup subsys blkio
[    0.060018] Initializing cgroup subsys perf_event
[    0.064042] Initializing cgroup subsys net_prio
[    0.068016] Initializing cgroup subsys hugetlb
[    0.072405] CPU: Physical Processor ID: 0
[    0.076008] CPU: Processor Core ID: 0
[    0.080597] mce: CPU supports 2 MCE banks
[    0.084049] Last level iTLB entries: 4KB 512, 2MB 8, 4MB 8
[    0.084049] Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32, 1GB 0
[    0.167547] Freeing SMP alternatives memory: 32K (ffffffff81e84000 - 
ffffffff81e8c000)
[    0.171470] ftrace: allocating 30109 entries in 118 pages
[    0.180097] cpu 0 spinlock event irq 17
[    0.209720] Performance Events: unsupported p6 CPU model 58 no PMU driver, 
software events only.
[    0.216624] x86: Booted up 1 node, 1 CPUs
[    0.219436] NMI watchdog: disabled (cpu0): hardware events not enabled
[    0.220097] devtmpfs: initialized
[    0.224259]inctrl subsystem
[    0.240115] RTC time:  9:19:29, date: 09/04/15
[    0.243125] NET: Registered protocol family 16
[    0.244019] xen:grant_table: Grant tables using version 1 layout
[    0.248012] Grant table initialized
[    0.250996] PCI: Using configuration type 1 for base access
[    0.253143] ACPI: Interpreter disabled.
[    0.256023] xen:balloon: Initialising balloon driver
[    0.260054] xen_balloon: Initialising balloon driver
[    0.264084] vgaarb: loaded
[    0.267394] SCSI subsystem initialized
[    0.268125] usbcore: registered new interface driver usbfs
[    0.272027] usbcore: registered new interface driver hub
[    0.276029] usbcore: registered new device driver usb
[    0.280195] PCI: Probing PCI hardware
[    0.284053] PCI host bridge to bus 0000:00
[    0.288011] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    0.292016] pci_bus 0000:00: root bus resource [mem 0x00000000-0xfffffffff]
[    0.296016] pci_bus 0000:00: No busn resource found for root bus, will use 
[bus 00-ff]
[    0.334803] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io  0x01f0-0x01f7]
[    0.336012] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io  0x03f6]
[    0.340013] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io  0x0170-0x0177]
[    0.344011] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io  0x0376]
[    0.380009] pci 0000:00:01.3: quirk: [io  0xb000-0xb03f] claimed by PIIX4 
ACPI
[    0.384126] pci 0000:00:01.3: quirk: [io  0xb100-0xb10f] claimed by PIIX4 SMB
[    0.481077] vgaarb: setting as boot device: PCI:0000:00:03.0
[    0.484000] vgaarb: device added: 
PCI:0000:00:03.0,decodes=io+mem,owns=io+mem,locks=none
[    0.658491] NetLabel: Initializing
[    0.660010] NetLabel:  domain hash size = 128
[    0.664005] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.668021] NetLabel:  unlabeled traffic allowed by default
[    0.672107] Switched to clocksource xen
[    0.678998] AppArmor: AppArmor Filesystem Enabled
[    0.682732] pnp: PnP ACPI: disabled
[    0.686495] NET: Registered protocol family 2
[    0.690206] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
[    0.695886] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
[    0.701146] TCP: Hash tables configured (established 16384 bind 16384)
[    0.705976] TCP: reno registered
[    0.708638] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[    0.713622] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[    0.718558] NET: Registered protocol family 1
[    0.722343] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[    0.727097] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[    0.731599] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[    0.738843] Trying to unpack rootfs image as initramfs...
[    0.993293] Freeing initrd memory: 20152K (ffff880004000000 - 
ffff8800053ae000)
[    1.001451] platform rtc_cmos: registered platform RTC device (no PNP device 
found)
[    1.007918] RAPL PMU detected, hw unit 2^-16 Joules, API unit is 2^-32 
Joules, 3 fixed counters 163840 ms 
ovfl timer
[    1.015854] Scanning for low memory corruption every 60 seconds
[    1.020402] futex hash table entries: 256 (order: 2, 16384 bytes)
[    1.025574] Initialise system trusted keyring
[    1.029131] audit: initializing netlink subsys (disabled)
[    1.033285] audit: type=2000 audit(1441358369.897:1): initialized
[    1.038897] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    1.046099] zpool: loaded
[    1.048902] zbud: loaded
[    1.051604] VFS: Disk quotas dquot_6.5.2
[    1.055733] VFS: Dquot-cache hash table entried (default)
[    1.093952] io scheduler cfq registered
[    1.097192] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    1.101588] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    1.107280] efifb: probing for efifb
[    1.110355] efifb: framebuffer at 0xf0000000, mapped to 0xffffc90040400000, 
using 1876k, total 1875k
[    1.117816] efifb: mode is 800x600x32, linelength=3200, pages=1
[    1.122449] efifb: scrolling: redraw
[    1.125626] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[    1.131187] Console: switching to colour frame buffer device 100x37
[    1.138084] fb0: EFI VGA frame buffer device
[    1.142969] xen:xen_evtchn: Event-channel device installed
[    1.149381] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[    1.157989] Linux agpgart interface v0.103
[    1.164282] brd: module loaded
[    1.169291] loop: module loaded
[    1.174623] scsi host0: ata_piix
[    1.179072] scsi host1: ata_piix
[    1.183777] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc520 irq 14
[    1.192034] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc528 irq 15
[    1.199223] libphy: Fixed MDIO Bus: probed
[    1.202671] tun: Universal TUN/TAP device driver, 1.6
[    1.207344] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[    1.214886] xen_netfront: Initialising Xen virtual ethernet driver
[    1.220446] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.226210] ehci-pci: EHCI PCI platform driver
[    1.230120] ehci-platform: EHCI generic platform driver
[    1.234669] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.240264] ohci-pci: OHCI PCI platform driver
[    1.244668] ohci-platform: OHCI generic platform driver
[    1.249638] uhci_hcd: USB Universal Host Controller Interface driver
[    1.258325] uhci_hcd 0000:00:01.2: UHCI Host Controller
[    1.264584] uhci_hcd 0000:00:01.2: new USB bus registered, assigned bus 
number 1
[    1.273332] uhci_hcd 0000:00:01.2: detected 2 ports
[    1.279682] uhci_hcd 0000:00:01.2: irq 11, io base 0x0000c500
[    1.287548] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[    1.298012] usb usb1: New USB device strings: Mfr=3, Product=2, 
SerialNumber=1
[    1.308733] usb usb1: Product: UHCI Host Controller
[    1.316312] usb usb1: Manufacturer: Linux 3.19.0-27-generic uhci_hcd
[    1.326807] usb usb1: SerialNumber: 0000:00:01.2
[    1.335295] hub 1-0:1.0: USB hub found
[    1.343430] hub 1-0:1.0: 2 ports detected
[    1.351699] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    1.376929] ata1.00: ATA-7: QEMU HARDDISK, 2.2.0, max UDMA/100
[    1.387276] ata1.00: 8388608 sectors, multi 16: LBA48
[    1.403654] ata1.00: configured for MWDMA2
[    1.411713] scsi 0:0:0:0: Direct-Access     ATA      QEMU HARDDISK    0    
PQ: 0 ANSI: 5
[    1.425605] sd 0:0:0:0: [sda] 8388608 512-byte logical blocks: (4.29 GB/4.00 
GiB)
[    1.438165] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    1.447011] sd 0:0:0:0: [sda] Write Protect is off
[    1.455946] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.616601] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.625921] mousedev: PS/2 mouse device common for all mice
[    1.637824] input: AT Translated Set 2 keyboard as 
/devices/platform/i8042/serio0/input/input0
[    1.653607] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    1.665069] rtc_cmos rtc_cmos: alarms up to one day, 114 bytes nvram
[    1.676792] i2c /dev entries driver
[    1.683411] device-mapper: uevent: version 1.0.3
[    1.692288] usb 1-1: new c_cmos: setting system clock to 2015-09-04 09:19:31 
UTC (1441358371)
[    1.917528] BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
[    5.112662] usb 1-1: New USB device found, idVendor=0627, idProduct=0001
[    5.126277] usb 1-1: New USB device strings: Mfr=1, Product=3, SerialNumber=5
[    5.139889] usb 1-1: Product: QEMU USB Tablet
[    5.148829] usb 1-1: Manufacturer: QEMU
[    5.156658] usb 1-1: SerialNumber: 42
[   31.848126] ata1: lost interrupt (Status 0x50)
[   31.856270] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[   31.867656] ata1.00: failed command: READ DMA
[   31.876628] ata1.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 
in
[   31.876628]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 
(timeout)
[   31.901212] ata1.00: status: { DRDY }
[   31.908881] ata1: soft resetting link
[   32.086514] ata1.00: configured for MWDMA2
[   32.094305] ata1.00: device reported invalid CHS sector 0
[   32.103392] ata1: EH complete

Linux only boot
vmlinuz root=/dev/loop0 ro console=ttyS0 console=tty1 nomodeset break=modules 
initrd=\EFI\Xen\initrd.img
[    0.000000] Initializing cgroup subsys cpusetg-lts-vivid-generic
[    0.000000] Initializing cgroup subsys cpuz-lts-vivid-generic
[    0.000000] Initializing cgroup subsys cpuacctefi
[    0.000000] Linux version 3.19.0-27-generic (root@localhost) (gcc version 
4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04) 
) #29~14.04.1 SMP Wed Sep 2 16:12:37 BST 2015 (Ubuntu 
3.19.0-27.29~14.04.1-generic 3.19.8-ckt5)
[    0.000000] Command line: vmlinuzroot=/dev/loop0 ro console=ttyS0 
console=tty1 nomodeset break=modules initrd=\EFI\Xen\initrd.img
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009efff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009f000-0x000000000009ffff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000eecf4fff] usable
[    0.000000] BIOS-e820: [mem 0x00000000eecf5000-0x00000000eee43fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000eee44000-0x00000000efec3fff] usable
[    0.000000] BIOS-e820: [mem 0x00000000efec4000-0x00000000eff17fff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000eff18000-0x00000000eff21fff] usable
[    0.000000] BIOS-e820: [mem 0x00000000eff22000-0x00000000eff23fff] ACPI data
[    0.000000] BIOS-e820: [mem 0x00000000eff24000-0x00000000eff27fff] ACPI NVS
[    0.000000] BIOS-e820: [mem 0x00000000eff28000-0x00000000effcffff] usable
[    0.000000] BIOS-e820: [mem 0x00000000effd0000-0x00000000effeffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000efff0000-0x00000000efffffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000040edecfff] usable
[    0.000000] bootconsole [xenboot0] enabled
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] efi: EFI v2.40 by EDK II
[    0.000000] efi:  SMBIOS=0xeed00000
[    0.000000] SMBIOS 2.7 present.
[    0.000000] Hypervisor detected: Xen HVM
[    0.000000] Xen version 4.5.
[    0.000000] Xen Platform PCI: unrecognised magic value
[    0.000000] AGP: No AGP bridge found
[    0.000000] e820: last_pfn = 0x40eded max_arch_pfn = 0x400000000
[    0.000000] PAT configuration [0-7]: WB  WC  UC- UC  WB  WC  UC- UC
[    0.000000] e820: last_pfn = 0xf0000 max_arch_pfn = 0x400000000
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[    0.000000] init_memory_mapping: [mem 0x40ea00000-0x40ebfffff]
[    0.000000] init_memory_mapping: [mem 0x400000000-0x40e9fffff]
[    0.000000] init_memory_mapping: [mem 0x3e0000000-0x3ffffffff]
[    0.000000] init_memory_mapping: [mem 0x00100000-0xeecf4fff]
[    0.000000] init_memory_mapping: [mem 0xeee44000-0xefec3fff]
[    0.000000] init_memory_mapping: [mem 0xeff18000-0xeff21fff]
[    0.000000] init_memory_mapping: [mem 0xeff28000-0xeffcffff]
[    0.000000] init_memory_mapping: [mem 0xefff0000-0xefffffff]
[    0.000000] init_memory_mapping: [mem 0x100000000-0x3dfffffff]
[    0.000000] init_memory_mapping: [mem 0x40ec00000-0x40edecfff]
[    0.000000] RAMDISK: [mem 0x7ec52000-0x7fffffff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: System description tables not found
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000040edecfff]
[    0.000000] NODE_DATA(0) allocated [mem 0x40ede8000-0x40edecfff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00001000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0xffffffff]
[    0.000000]   Normal   [mem 0x100000000-0x40edecfff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00001000-0x0009efff]
[    0.000000]   node   0: [mem 0x00100000-0xeecf4fff]
[    0.000000]   node   0: [mem 0xeee44000-0xefec3fff]
[    0.000000]   node   0: [mem 0xeff18000-0xeff21fff]
[    0.000000]   node   0: [mem 0xeff28000-0xeffcffff]
[    0.000000]   node   0: [mem 0xefff0000-0xefffffff]
[    0.000000]   node   0: [mem 0x100000000-0x40edecfff]
[    0.000000] Initmem setup node 0 [mem 0x00001000-0x40edecfff]
[    0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[    0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] e820: [mem 0xf0000000-0xffffffff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen HVM
[    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:1 
nr_node_ids:1
[    0.000000] PERCPU: Embedded 30 pages/cpu @ffff88040e800000 s85888 r8192 
d28800 u2097152
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total 
pages: 4121627
[    0.000000] Policy zone: Normal
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] xsave: enabled xstate_bv 0x7, cntxt size 0x340 using standard 
form
[    0.000000] AGP: Checking aperture...
[    0.000000] AGP: No AGP bridge found
[    0.000000] Memory: 16363160K/16756488K available (7949K kernel code, 1167K 
rwdata, 3748K rodata, 1404K init, 1284K bss, 393328K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU dyntick-idle grace-period acceleration is enabled.
[    0.000000]  RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[    0.000000] NR_IRQS:16640 nr_irqs:32 16
[    0.000000] xen:events: Using FIFO-based ABI
[    0.000000] xen:events: Xen HVM callback vector for event delivery is enabled
[    0.000000]  Offload RCU callbacks from all CPUs
[    0.000000]  Offload RCU callbacks from CPUs: 0.
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty1] enabled
[    0.000000] bootconsole [xenboot0] disabled
[    0.000000] console [ttyS0] enabled
[    0.000000] tsc: Detected 3093.088 MHz processor
[    0.008000] Calibrating delay loop (skipped), value calculated using timer 
frequency.. 6186.17 BogoMIPS (lpj=12372352)
[    0.009801] pid_max: default: 32768 minimum: 301
[    0.012740] Security Framework initialized
[    0.016016] AppArmor: AppArmor initialized
[    0.018578] Yama: becoming mindful.
[    0.020928] Dentry cache hash table entries: 2097152 (order: 12, 16777216 
bytes)
[    0.031537] Inode-cache hash table entries: 1048576 (order: 11, 8388608 
bytes)
[    0.040931] Mount-cache hash table entries: 32768 (order: 6, 262144 bytes)
[    0.044043] Mountpoint-cache hash table entries: 32768 (order: 6, 262144 
bytes)
[    0.052310] Initializing cgroup subsys memory
[    0.056015] Initializing cgroup subsys devices
[    0.064010] Initializing cgroup subsys freezer
[    0.068012] Initializing cgroup subsys net_cls
[    0.072011] Initializing cgroup subsys blkio
[    0.080010] Initializing cgroup subsys perf_event
[    0.084011] Initializing cgroup subsys net_prio
[    0.092010] Initializing cgroup subsys hugetlb
[    0.096152] CPU: Physical Processor ID: 0
[    0.100007] CPU: Processor Core ID: 0
[    0.104565] mce: CPU supports 2 MCE banks
[    0.112049] Last level iTLB entries: 4KB 512, 2MB 8, 4MB 8
[    0.112049] Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32, 1GB 0
[    0.140467] Freeing SMP alternatives memory: 32K (ffffffffa3e84000 - 
ffffffffa3e8c000)
[    0.148182] ftrace: allocating 30109 entries in 118 pages
[    0.192055] smpboot: weird, boot CPU (#0) not listed by the BIOS
[    0.196010] smpboot: SMP motherboard not detected
[    0.200148] installing Xen timer for CPU 0
[    0.202301] smpboot: SMP disabled
[    0.204000] cpu 0 spinlock event irq 21
[    0.208225] Performance Events: unsupported p6 CPU model 58 no PMU driver, 
software events only.
[    0.212585] x86: Booted up 1 node, 1 CPUs
[    0.214576] smpboot: Total of 1 processors activated (6186.17 BogoMIPS)
[    0.216047] NMI watchdog: disabled (cpu0): hardware events not enabled
[    0.219607] devtmpfs: initialized
[    0.222804] evm: security.selinux
[    0.224005] evm: security.SMACK64
[    0.225776] evm: security.SMACK64EXEC
[    0.227970] evm: security.SMACK64TRANSMUTE
[    0.228005] evm: security.SMACK64MMAP
[    0.230433] evm: security.ima
[    0.232005] evm: security.capability
[    0.234459] pinctrl core: initialized pinctrl subsystem
[    0.236089] RTC time: 11:23:44, date: 09/04/15
[    0.238467] NET: Registered protocol family 16
[    0.240137] cpuidle: using governor ladder
[    0.242766] cpuidle: using governor menu
[    0.244345] PCI: Using configuration type 1 for base access
[    0.248854] ACPI: Interpreter disabled.
[    0.251031] xen:balloon: Initialising balloon driver
[    0.252034] xen_balloon: Initialising balloon driver
[    0.254701] vgaarb: loaded
[    0.256180] SCSI subsystem initialized
[    0.258952] usbcore: registered new interface driver usbfs
[    0.260016] usbcore: registered new interface driver hub
[    0.263985] usbcore: registered new device driver usb
[    0.264202] PCI: Probing PCI hardware
[    0.266751] PCI host bridge to bus 0000:00
[    0.268010] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    0.272009] pci_bus 0000:00: root bus resource [mem 0x00000000-0xfffffffff]
[    0.276008] pci_bus 0000:00: No busn resource found for root bus, will use 
[bus 00-ff]
[    0.312152] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io  0x01f0-0x01f7]
[    0.316007] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io  0x03f6]
[    0.319538] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io  0x0170-0x0177]
[    0.320006] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io  0x0376]
[    0.341623] pci 0000:00:01.3: quirk: [io  0xb000-0xb03f] claimed by PIIX4 
ACPI
[    0.344036] pci 0000:00:01.3: quirk: [io  0xb100-0xb10f] claimed by PIIX4 SMB
[    0.456642] vgaarb: setting as boot device: PCI:0000:00:03.0
[    0.460000] vgaarb: device added: 
PCI:0000:00:03.0,decodes=io+mem,owns=io+mem,locks=none
[    0.677008] NetLabel: Initializing
[    0.678819] NetLabel:  domain hash size = 128
[    0.680004] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.682336] NetLabel:  unlabeled traffic allowed by default
[    0.684098] Switched to clocksource xen
[    0.689826] AppArmor: AppArmor Filesystem Enabled
[    0.692220] pnp: PnP ACPI: disabled
[    0.695196] NET: Registered protocol family 2
[    0.697914] TCP established hash table entries: 131072 (order: 8, 1048576 
bytes)
[    0.702334] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[    0.706153] TCP: Hash tables configured (established 131072 bind 65536)
[    0.709327] TCP: reno registered
[    0.710945] UDP hash table entries: 8192 (order: 6, 262144 bytes)
[    0.714017] UDP-Lite hash table entries: 8192 (order: 6, 262144 bytes)
[    0.717732] NET: Registered protocol family 1
[    0.720647] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[    0.724106] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[    0.727446] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[    0.733703] Trying to unpack rootfs image as initramfs...
[    0.744442] init_memory_mapping: [mem 0x410000000-0x417ffffff]
[    1.055570] Freeing initrd memory: 20152K (ffff88007ec52000 - 
ffff880080000000)
[    1.059774] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    1.062707] software IO TLB [mem 0xe8000000-0xec000000] (64MB) mapped at 
[ffff8800e8000000-ffff8800ebffffff]
[    1.067484] platform rtc_cmos: registered platform RTC device (no PNP device 
found)
[    1.071047] RAPL PMU detected, hw unit 2^-16 Joules, API unit is 2^-32 
Joules, 3 fixed counters 163840 ms 
ovfl timer
[    1.076203] microcode: CPU0 sig=0x306a9, pf=0x2, revision=0x19
[    1.078946] microcode: Microcode Update Driver: v2.00 
<tigran@xxxxxxxxxxxxxxxxxxxx>, Peter Oruba
[    1.082855] Scanning for low memory corruption every 60 seconds
[    1.085790] futex hash table entries: 256 (order: 2, 16384 bytes)
[    1.088666] Initialise system trusted keyring
[    1.090786] audit: initializing netlink subsys (disabled)
[    1.093266] audit: type=2000 audit(1441365825.045:1): initialized
[    1.096435] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    1.100336] zpool: loaded
[    1.101623] zbud: loaded
[    1.103214] VFS: Disk quotas dquot_6.5.2
[    1.105323] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    1.108982] fuse init (API version 7.23)
[    1.111085] Key type big_key registered
[    1.113241] Key type asymmetric registered
[    1.115635] Asymmetric key parser 'x509' registered
[    1.118313] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 
252)
[    1.122514] io scheduler noop registered
[    1.124401] io scheduler deadline registered (default)
[    1.127270] io scheduler cfq registered
[    1.129466] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    1.132920] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    1.136635] efifb: probing for efifb
[    1.138626] efifb: framebuffer at 0xf0000000, mapped to 0xffffc90001b80000, 
using 1876k, total 1875k
[    1.144316] efifb: mode is 800x600x32, linelength=3200, pages=1
[    1.148050] efifb: scrolling: redraw
[    1.150439] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[    1.154332] Console: switching to colour frame buffer device 100x37
[    1.158181] fb0: EFI VGA frame buffer device
[    1.160688] xen:xen_evtchn: Event-channel device installed
[    1.163905] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[    1.194961] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is 
a 16550A
[    1.202581] Linux agpgart interface v0.103
[    1.207312] brd: module loaded
[    1.210900] loop: module loaded
[    1.215767] scsi host0: ata_piix
[    1.219531] scsi host1: ata_piix
[    1.222855] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc520 irq 14
[    1.230450] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc528 irq 15
[    1.237874] libphy: Fixed MDIO Bus: probed
[    1.242227] tun: Universal TUN/TAP device driver, 1.6
[    1.249014] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[    1.259201] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.267448] ehci-pci: EHCI PCI platform driver
[    1.273426] ehci-platform: EHCI generic platform driver
[    1.279886] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.287829] ohci-pci: OHCI PCI platform driver
[    1.293405] ohci-platform: OHCI generic platform driver
[    1.299924] uhci_hcd: USB Universal Host Controller Interface driver
[    1.310552] uhci_hcd 0000:00:01.2: UHCI Host Controller
[    1.316839] uhci_hcd 0000:00:01.2: new USB bus registered, assigned bus 
number 1
[    1.325677] uhci_hcd 0000:00:01.2: detected 2 ports
[    1.332401] uhci_hcd 0000:00:01.2: irq 11, io base 0x0000c500
[    1.339625] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[    1.348612] usb usb1: New USB device strings: Mfr=3, Product=2, 
SerialNumber=1
[    1.358865] usb usb1: Product: UHCI Host Controller
[    1.366085] usb usb1: Manufacturer: Linux 3.19.0-27-generic uhci_hcd
[    1.374839] usb usb1: SerialNumber: 0000:00:01.2
[    1.380642] hub 1-0:1.0: USB hub found
[    1.386074] hub 1-0:1.0: 2 ports detected
[    1.392603] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    1.403969] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.411047] serio: i8042 AUX port at 0x60,0x64 irq 12
[    1.423726] ata1.00: ATA-7: QEMU HARDDISK, 2.2.0, max UDMA/100
[    1.431404] ata1.00: 8388608 sectors, multi 16: LBA48
[    1.439358] mousedev: PS/2 mouse device common for all mice
[    1.448671] input: AT Translated Set 2 keyboard as 
/devices/platform/i8042/serio0/input/input0
[    1.459490] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    1.468033] rtc_cmos rtc_cmos: alarms up to one day, 114 bytes nvram
[    1.476418] i2c /dev entries driver
[    1.481983] device-mapper: uevent: version 1.0.3
[    1.489608] ata1.00: configured for MWDMA2
[    1.497003] scsi 0:0:0:0: Direct-Access     ATA      QEMU HARDDISK    0    
PQ: 0 ANSI: 5
[    1.507023] sd 0:0:0:0: [sda] 8388608 512-byte logical blocks: (4.29 GB/4.00 
GiB)
[    1.515686] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    1.522473] sd 0:0:0:0: [sda] Write Protect is off
[    1.528503] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.540323] device-mapper: ioctl: 4.29.0-ioctl (2014-10-28) initialised: 
dm-devel@xxxxxxxxxx
[    1.549694] ledtrig-cpu: registered to indicate activity on CPUs
[    1.556806] EFI Variables Facility v0.08 2004-May-17
[    1.566438] aufs 3.x-rcN-20150105
[    1.570976] TCP: cubic registered
[    1.575388] NET: Registered protocol family 10
[    1.581941] NET: Registered protocol family 17
[    1.587703] Key type dns_resolver registered
[    1.593177] Loading compiled-in X.509 certificates
[    1.599960] Loaded X.509 cert 'Magrathea: Glacier signing key: 
3ab6be79b1b7eecbae272b00f23775ee0741adc0'
[    1.611511] registered taskstats version 1
[    1.624792]  sda: sda1 sda2
[    1.630589] sd 0:0:0:0: [sda] Attached SCSI disk
[    1.637781] Key type trusted registered
[    1.646976] Key type encrypted registered
[    1.652255] AppArmor: AppArmor sha1 policy hashing enabled
[    1.659717] ima: No TPM chip found, activating TPM-bypass!
[    1.666750] evm: HMAC attrs: 0x1
[    1.672621]   Magic number: 15:306:377
[    1.678083] rtc_cmos rtc_cmos: setting system clock to 2015-09-04 11:23:45 
UTC (1441365825)
[    1.689072] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[    1.697831] EDD information not available.
[    1.704516] Freeing unused kernel memory: 1404K (ffffffffa3d25000 - 
ffffffffa3e84000)
[    1.715080] Write protecting the kernel read-only data: 12288k
[    1.722851] Freeing unused kernel memory: 232K (ffff8800237c6000 - 
ffff880023800000)
[    1.733172] Freeing unused kernel memory: 348K (ffff880023ba9000 - 
ffff880023c00000)
[    1.760182] systemd-udevd[104]: starting version 204
[    1.792082] 8139cp: 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
[    1.817157] 8139cp 0000:00:04.0 eth0: RTL-8139C+ at 0xffffc90001b22400, 
00:16:3e:01:3d:23, IRQ 11
[    1.844373] 8139cp 0000:00:05.0 eth1: RTL-8139C+ at 0xffffc90001b28500, 
00:16:3e:02:3d:23, IRQ 10
[    1.870893] 8139cp 0000:00:06.0 eth2: RTL-8139C+ at 0xffffc90001b2a600, 
00:16:3e:03:3d:23, IRQ 10
[    1.898048] 8139cp 0000:00:07.0 eth3: RTL-8139C+ at 0xffffc90001b2c700, 
00:16:3e:04:3d:23, IRQ 11
[    1.910575] usb 1-1: new full-speed USB device number 2 using uhci_hcd
[    1.923902] hidraw: raw HID events driver (C) Jiri Kosina
[    1.934759] 8139too: 8139too Fast Ethernet driver 0.9.28
[    1.944563] usbcore: registered new interface driver usbhid
[    1.952026] usbhid: USB HID core driver
[    1.966778] sym0: <895a> rev 0x0 at pci 0000:00:02.0 irq 10
[    2.116320] usb 1-1: New USB device found, idVendor=0627, idProduct=0001
[    2.120640] usb 1-1: New USB device strings: Mfr=1, Product=3, SerialNumber=5
[    2.124619] usb 1-1: Product: QEMU USB Tablet
[    2.127218] usb 1-1: Manufacturer: QEMU
[    2.129673] usb 1-1: SerialNumber: 42
[    2.138458] sym0: No NVRAM, ID 7, Fast-40, LVD, parity checking
[    2.145968] sym0: SCSI BUS has been reset.
[    2.152669] scsi host2: sym-2.2.3
[    2.269760] input: QEMU QEMU USB Tablet as 
/devices/pci0000:00/0000:00:01.2/usb1/1-1/1-1:1.0/0003:0627:0001.0001/inpu      
                                                                                
                               
t/input3
[    2.289486] hid-generic 0003:0627:0001.0001: input,hidraw0: USB HID v0.01 
Pointer [QEMU QEMU USB Tablet] on 
usb-0000:                                                                       
                                              
00:01.2-1/input0
[    3.047034] input: ImExPS/2 Generic Explorer Mouse as 
/devices/platform/i8042/serio1/input/input2
[    5.141175] sym0: unknown interrupt(s) ignored, ISTAT=0x5 DSTAT=0x80 SIST=0x0
[    5.150880] scsi 2:0:0:0: Direct-Access     QEMU     QEMU HARDDISK    2.2. 
PQ: 0 ANSI: 5
[    5.161867] scsi target2:0:0: tagged command queuing enabled, command queue 
depth 16.
[    5.171433] scsi target2:0:0: Beginning Domain Validation
[    5.180902] scsi target2:0:0: Domain Validation skipping write tests
[    5.189206] scsi target2:0:0: Ending Domain Validation
[    5.213690] sd 2:0:0:0: [sdb] 1048576000 512-byte logical blocks: (536 
GB/500 GiB)
[    5.220333] sd 2:0:0:0: Attached scsi generic sgCSI disk
[   64.160052] random: nonblocking pool is initialized

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