The following HVM domU.cfg crashes during boot from emulated network
with qemu 2.7, but it works fine with qemu stable-2.6 branch:

name='hvm'
memory=1024
vcpus=2
boot="n"
disk=[ 'file:/disk0.raw,hda,w', ]
vif=[ 'mac=00:08:15:41:10:80,bridge=br0', ]
keymap="de"
serial="pty"
builder="hvm"
vnc=1
vncunused=1
device_model_version="qemu-xen"
device_model_override="/usr/lib/qemu-2.7/bin/qemu-system-i386"


qemu build environment is identical for 2.6 and 2.7. dom0 is current
xen.git#staging-4.7. xl dmesg shows no obvious difference, the output is
identical for both boot attempts except for the crash part:

[-(d2)-]
{+(d1)+} Booting from [-c980:0361-] {+c980:0382
(XEN) Real-mode emulation failed: d1v0 Real @ 9c4c:000006ab -> 0f ae 06 d0 1c 
0f 01 0e c6 1c 0f 01 06 c0 1c fc
(XEN) domain_crash called from realmode.c:165
(XEN) Domain 1 (vcpu#0) crashed on cpu#3:
(XEN) ----[ Xen-4.7.20160826T082055.80bc435-1.xen47  x86_64  debug=n  Not 
tainted ]----
(XEN) CPU:    3
(XEN) RIP:    9c4c:[<00000000000006ab>]
(XEN) RFLAGS: 0000000000010046   CONTEXT: hvm guest (d1v0)
(XEN) rax: 0000000000000020   rbx: 0000000000009cd0   rcx: 0000000000000000
(XEN) rdx: 0000000000006f28   rsi: 000000003f790456   rdi: 000000003f6f0000
(XEN) rbp: 00000000ffffffff   rsp: 0000000000002ea8   r8:  0000000000000000
(XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) r15: 0000000000000000   cr0: 0000000000000010   cr4: 0000000000000000
(XEN) cr3: 0000000000000000   cr2: 0000000000000000
(XEN) ds: 9cd0   es: 0000   fs: 0000   gs: 0000   ss: 9cd0   cs: 9c4c+}


Is there something that could be copied from /usr/lib/qemu-2.6 to
/usr/lib/qemu-2.7 to check if its related to the emulated ROMs?

Olaf
 Xen 4.7.20160826T082055.80bc435-1.xen47
(XEN) Xen version 4.7.20160826T082055.80bc435-1.xen47 (abuild@) (gcc (SUSE 
Linux) 4.8.5) debug=n Fri Aug 26 10:20:55 UTC 2016
(XEN) Latest ChangeSet: 2016-08-26 10:20:55 +0200 git:80bc435
(XEN) Bootloader: GRUB2 2.02~beta2
(XEN) Command line: Xcrashkernel=512M-:256M console=com1 com1=115200 loglvl=all 
guest_loglvl=all
(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 1 MBR signatures
(XEN)  Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009ec00 (usable)
(XEN)  00000000000f0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000db6cfc00 (usable)
(XEN)  00000000db6cfc00 - 00000000db723c00 (ACPI NVS)
(XEN)  00000000db723c00 - 00000000db725c00 (ACPI data)
(XEN)  00000000db725c00 - 00000000dc000000 (reserved)
(XEN)  00000000f8000000 - 00000000fc000000 (reserved)
(XEN)  00000000fec00000 - 00000000fed00400 (reserved)
(XEN)  00000000fed20000 - 00000000feda0000 (reserved)
(XEN)  00000000fee00000 - 00000000fef00000 (reserved)
(XEN)  00000000ffb00000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000220000000 (usable)
(XEN) ACPI: RSDP 000FEC00, 0024 (r2 DELL  )
(XEN) ACPI: XSDT 000FC7E0, 007C (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: FACP 000FC8D0, 00F4 (r3 DELL    B11K          15 ASL        61)
(XEN) ACPI: DSDT FFDCBEE5, 47BC (r1   DELL    dt_ex     1000 INTL 20050624)
(XEN) ACPI: FACS DB6CFC00, 0040
(XEN) ACPI: SSDT FFDD07C2, 00AC (r1   DELL    st_ex     1000 INTL 20050624)
(XEN) ACPI: APIC 000FC9C4, 0092 (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: BOOT 000FCA56, 0028 (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: ASF! 000FCA7E, 0096 (r32 DELL    B11K          15 ASL        61)
(XEN) ACPI: MCFG 000FCB14, 003C (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: HPET 000FCB50, 0038 (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: TCPA 000FCDAC, 0032 (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: DMAR 000FCDDE, 0068 (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: SLIC 000FCB88, 0176 (r1 DELL    B11K          15 ASL        61)
(XEN) ACPI: SSDT DB725C00, 2874 (r1  INTEL PPM RCM  80000001 INTL 20061109)
(XEN) System RAM: 8118MB (8313268kB)
(XEN) No NUMA configuration found
(XEN) Faking a node at 0000000000000000-0000000220000000
(XEN) Domain heap initialised
(XEN) found SMP MP-table at 000fe710
(XEN) DMI 2.6 present.
(XEN) Using APIC driver default
(XEN) ACPI: PM-Timer IO Port: 0x808
(XEN) ACPI: SLEEP INFO: pm1x_cnt[1:804,1:0], pm1x_evt[1:800,1:0]
(XEN) ACPI:             wakeup_vec[db6cfc0c], vec_size[20]
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x01] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x03] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x05] enabled)
(XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x07] enabled)
(XEN) ACPI: LAPIC_NMI (acpi_id[0xff] high level lint[0x1])
(XEN) ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
(XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
(XEN) ACPI: IRQ0 used by override.
(XEN) ACPI: IRQ2 used by override.
(XEN) ACPI: IRQ9 used by override.
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) ACPI: HPET id: 0x8086a701 base: 0xfed00000
(XEN) ERST table was not found
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) SMP: Allowing 8 CPUs (0 hotplug CPUs)
(XEN) IRQ limits: 24 GSI, 1528 MSI/MSI-X
(XEN) Intel machine check reporting enabled
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2793.067 MHz processor.
(XEN) Initing memory sharing.
(XEN) alt table ffff82d0802b0510 -> ffff82d0802b1b48
(XEN) PCI: MCFG configuration 0: base f8000000 segment 0000 buses 00 - 3f
(XEN) PCI: MCFG area at f8000000 reserved in E820
(XEN) PCI: Using MCFG for segment 0000 bus 00-3f
(XEN) Intel VT-d iommu 0 supported page sizes: 4kB.
(XEN) Intel VT-d Snoop Control enabled.
(XEN) Intel VT-d Dom0 DMA Passthrough not enabled.
(XEN) Intel VT-d Queued Invalidation enabled.
(XEN) Intel VT-d Interrupt Remapping not enabled.
(XEN) Intel VT-d Posted Interrupt not enabled.
(XEN) Intel VT-d Shared EPT tables not enabled.
(XEN) I/O virtualisation enabled
(XEN)  - Dom0 mode: Relaxed
(XEN) Interrupt remapping disabled
(XEN) nr_sockets: 1
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using new ACK method
(XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
(XEN) Platform timer is 14.318MHz HPET
(XEN) Allocated console ring of 64 KiB.
(XEN) mwait-idle: MWAIT substates: 0x1120
(XEN) mwait-idle: v0.4.1 model 0x1e
(XEN) mwait-idle: lapic_timer_reliable_states 0x2
(XEN) HPET: 8 timers usable for broadcast (8 total)
(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)  - Virtual NMI
(XEN)  - MSR direct-access bitmap
(XEN) HVM: ASIDs enabled.
(XEN) HVM: VMX enabled
(XEN) HVM: Hardware Assisted Paging (HAP) detected
(XEN) HVM: HAP page sizes: 4kB, 2MB
(XEN) Brought up 8 CPUs
(XEN) ACPI sleep modes: S3
(XEN) VPMU: disabled
(XEN) mcheck_poll: Machine check polling timer started.
(XEN) Dom0 has maximum 792 PIRQs
(XEN) NX (Execute Disable) protection active
(XEN) *** LOADING DOMAIN 0 ***
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x2094000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000210000000->0000000214000000 (1996808 pages to be 
allocated)
(XEN)  Init. ramdisk: 000000021f2a4000->000000021fffffb0
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff81000000->ffffffff82094000
(XEN)  Init. ramdisk: 0000000000000000->0000000000000000
(XEN)  Phys-Mach map: 0000008000000000->0000008000f62b20
(XEN)  Start info:    ffffffff82094000->ffffffff820944b4
(XEN)  Page tables:   ffffffff82095000->ffffffff820aa000
(XEN)  Boot stack:    ffffffff820aa000->ffffffff820ab000
(XEN)  TOTAL:         ffffffff80000000->ffffffff82400000
(XEN)  ENTRY ADDRESS: ffffffff81d42180
(XEN) Dom0 has maximum 8 VCPUs
(XEN) Scrubbing Free RAM on 1 nodes using 4 CPUs
(XEN) .................done.
(XEN) Initial low memory virq threshold set at 0x4000 pages.
(XEN) Std. Loglevel: All
(XEN) Guest Loglevel: All
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to 
Xen)
(XEN) Freed 308kB init memory
(XEN) PCI add device 0000:00:00.0
(XEN) PCI add device 0000:00:03.0
(XEN) PCI add device 0000:00:08.0
(XEN) PCI add device 0000:00:08.1
(XEN) PCI add device 0000:00:08.2
(XEN) PCI add device 0000:00:10.0
(XEN) PCI add device 0000:00:10.1
(XEN) PCI add device 0000:00:16.0
(XEN) PCI add device 0000:00:16.2
(XEN) PCI add device 0000:00:16.3
(XEN) PCI add device 0000:00:19.0
(XEN) PCI add device 0000:00:1a.0
(XEN) PCI add device 0000:00:1b.0
(XEN) PCI add device 0000:00:1c.0
(XEN) PCI add device 0000:00:1c.4
(XEN) PCI add device 0000:00:1d.0
(XEN) PCI add device 0000:00:1e.0
(XEN) PCI add device 0000:00:1f.0
(XEN) PCI add device 0000:00:1f.2
(XEN) PCI add device 0000:00:1f.3
(XEN) PCI add device 0000:01:00.0
(XEN) PCI add device 0000:02:00.0
(XEN) PCI add device 0000:04:02.0
(XEN) PCI add device 0000:3f:00.0
(XEN) PCI add device 0000:3f:00.1
(XEN) PCI add device 0000:3f:02.0
(XEN) PCI add device 0000:3f:02.1
(XEN) PCI add device 0000:3f:03.0
(XEN) PCI add device 0000:3f:03.1
(XEN) PCI add device 0000:3f:03.4
(XEN) PCI add device 0000:3f:04.0
(XEN) PCI add device 0000:3f:04.1
(XEN) PCI add device 0000:3f:04.2
(XEN) PCI add device 0000:3f:04.3
(XEN) PCI add device 0000:3f:05.0
(XEN) PCI add device 0000:3f:05.1
(XEN) PCI add device 0000:3f:05.2
(XEN) PCI add device 0000:3f:05.3
(XEN) HVM1 save: CPU
(XEN) HVM1 save: PIC
(XEN) HVM1 save: IOAPIC
(XEN) HVM1 save: LAPIC
(XEN) HVM1 save: LAPIC_REGS
(XEN) HVM1 save: PCI_IRQ
(XEN) HVM1 save: ISA_IRQ
(XEN) HVM1 save: PCI_LINK
(XEN) HVM1 save: PIT
(XEN) HVM1 save: RTC
(XEN) HVM1 save: HPET
(XEN) HVM1 save: PMTIMER
(XEN) HVM1 save: MTRR
(XEN) HVM1 save: VIRIDIAN_DOMAIN
(XEN) HVM1 save: CPU_XSAVE
(XEN) HVM1 save: VIRIDIAN_VCPU
(XEN) HVM1 save: VMCE_VCPU
(XEN) HVM1 save: TSC_ADJUST
(XEN) HVM1 restore: CPU 0
(d1) HVM Loader
(d1) Detected Xen v4.7.20160826T08205
(d1) Xenbus rings @0xfeffc000, event channel 1
(d1) System requested SeaBIOS
(d1) CPU speed is 2793 MHz
(d1) Relocating guest memory for lowmem MMIO space disabled
(d1) PCI-ISA link 0 routed to IRQ5
(d1) PCI-ISA link 1 routed to IRQ10
(d1) PCI-ISA link 2 routed to IRQ11
(d1) PCI-ISA link 3 routed to IRQ5
(d1) pci dev 01:3 INTA->IRQ10
(d1) pci dev 02:0 INTA->IRQ11
(d1) pci dev 04:0 INTA->IRQ5
(d1) No RAM in high memory; setting high_mem resource base to 100000000
(d1) pci dev 03:0 bar 10 size 002000000: 0f0000008
(d1) pci dev 02:0 bar 14 size 001000000: 0f2000008
(d1) pci dev 04:0 bar 30 size 000040000: 0f3000000
(d1) pci dev 03:0 bar 30 size 000010000: 0f3040000
(d1) pci dev 03:0 bar 14 size 000001000: 0f3050000
(d1) pci dev 02:0 bar 10 size 000000100: 00000c001
(d1) pci dev 04:0 bar 10 size 000000100: 00000c101
(d1) pci dev 04:0 bar 14 size 000000100: 0f3051000
(d1) pci dev 01:1 bar 20 size 000000010: 00000c201
(d1) Multiprocessor initialisation:
(d1)  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
(d1)  - CPU1 ... 36-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
(d1) Writing SMBIOS tables ...
(d1) Loading SeaBIOS ...
(d1) Creating MP tables ...
(d1) Loading ACPI ...
(d1) vm86 TSS at fc00a180
(d1) BIOS map:
(d1)  10000-100e3: Scratch space
(d1)  c0000-fffff: Main BIOS
(d1) E820 table:
(d1)  [00]: 00000000:00000000 - 00000000:000a0000: RAM
(d1)  HOLE: 00000000:000a0000 - 00000000:000c0000
(d1)  [01]: 00000000:000c0000 - 00000000:00100000: RESERVED
(d1)  [02]: 00000000:00100000 - 00000000:3f800000: RAM
(d1)  HOLE: 00000000:3f800000 - 00000000:fc000000
(d1)  [03]: 00000000:fc000000 - 00000001:00000000: RESERVED
(d1) Invoking SeaBIOS ...
(d1) SeaBIOS (version ?-20160831_083046-cloud109)
(d1) BUILD: gcc: (SUSE Linux) 4.8.5 binutils: (GNU Binutils; SUSE Linux 
Enterprise 1
(d1) 2) 2.25.0
(d1) 
(d1) Found Xen hypervisor signature at 40000000
(d1) Running on QEMU (i440fx)
(d1) xen: copy e820...
(d1) Relocating init from 0x000dc1d0 to 0x3f7ad7f0 (size 75648)
(d1) Found 7 PCI devices (max PCI bus is 00)
(d1) Allocated Xen hypercall page at 3f7ff000
(d1) Detected Xen v4.7.20160826T08205
(d1) xen: copy BIOS tables...
(d1) Copying SMBIOS entry point from 0x00010020 to 0x000f6d20
(d1) Copying MPTABLE from 0xfc001170/fc001180 to 0x000f6c20
(d1) Copying PIR from 0x00010040 to 0x000f6ba0
(d1) Copying ACPI RSDP from 0x000100c0 to 0x000f6b70
(d1) Using pmtimer, ioport 0xb008
(d1) Scan for VGA option rom
(d1) Running option rom at c000:0003
(d1) pmm call arg1=0
(d1) Turning on vga text mode console
(d1) SeaBIOS (version ?-20160831_083046-cloud109)
(d1) Machine UUID ed769347-e46a-481d-b03b-757b3fc53b12
(d1) All threads complete.
(d1) Found 0 lpt ports
(d1) Found 1 serial ports
(d1) ATA controller 1 at 1f0/3f4/0 (irq 14 dev 9)
(d1) ATA controller 2 at 170/374/0 (irq 15 dev 9)
(d1) PS2 keyboard initialized
(d1) ata0-0: QEMU HARDDISK ATA-7 Hard-Disk (4096 MiBytes)
(d1) Searching bootorder for: /pci@i0cf8/*@1,1/drive@0/disk@0
(d1) All threads complete.
(d1) Scan for option roms
(d1) Running option rom at c980:0003
(d1) pmm call arg1=1
(d1) pmm call arg1=0
(d1) pmm call arg1=1
(d1) pmm call arg1=0
(d1) Searching bootorder for: /pci@i0cf8/*@4
(d1) 
(d1) Press ESC for boot menu.
(d1) 
(d1) Searching bootorder for: HALT
(d1) drive 0x000f6b00: PCHS=8322/16/63 translation=lba LCHS=522/255/63 s=8388608
(d1) Space available for UMB: ca800-ed800, f6540-f6b00
(d1) Returned 258048 bytes of ZoneHigh
(d1) e820 map has 6 items:
(d1)   0: 0000000000000000 - 000000000009fc00 = 1 RAM
(d1)   1: 000000000009fc00 - 00000000000a0000 = 2 RESERVED
(d1)   2: 00000000000f0000 - 0000000000100000 = 2 RESERVED
(d1)   3: 0000000000100000 - 000000003f7ff000 = 1 RAM
(d1)   4: 000000003f7ff000 - 000000003f800000 = 2 RESERVED
(d1)   5: 00000000fc000000 - 0000000100000000 = 2 RESERVED
(d1) enter handle_19:
(d1)   NULL
(d1) Booting from ROM...
(d1) Booting from c980:0382
(XEN) Real-mode emulation failed: d1v0 Real @ 9c4c:000006ab -> 0f ae 06 d0 1c 
0f 01 0e c6 1c 0f 01 06 c0 1c fc
(XEN) domain_crash called from realmode.c:165
(XEN) Domain 1 (vcpu#0) crashed on cpu#3:
(XEN) ----[ Xen-4.7.20160826T082055.80bc435-1.xen47  x86_64  debug=n  Not 
tainted ]----
(XEN) CPU:    3
(XEN) RIP:    9c4c:[<00000000000006ab>]
(XEN) RFLAGS: 0000000000010046   CONTEXT: hvm guest (d1v0)
(XEN) rax: 0000000000000020   rbx: 0000000000009cd0   rcx: 0000000000000000
(XEN) rdx: 0000000000006f28   rsi: 000000003f790456   rdi: 000000003f6f0000
(XEN) rbp: 00000000ffffffff   rsp: 0000000000002ea8   r8:  0000000000000000
(XEN) r9:  0000000000000000   r10: 0000000000000000   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) r15: 0000000000000000   cr0: 0000000000000010   cr4: 0000000000000000
(XEN) cr3: 0000000000000000   cr2: 0000000000000000
(XEN) ds: 9cd0   es: 0000   fs: 0000   gs: 0000   ss: 9cd0   cs: 9c4c
(XEN) HVM2 save: CPU
(XEN) HVM2 save: PIC
(XEN) HVM2 save: IOAPIC
(XEN) HVM2 save: LAPIC
(XEN) HVM2 save: LAPIC_REGS
(XEN) HVM2 save: PCI_IRQ
(XEN) HVM2 save: ISA_IRQ
(XEN) HVM2 save: PCI_LINK
(XEN) HVM2 save: PIT
(XEN) HVM2 save: RTC
(XEN) HVM2 save: HPET
(XEN) HVM2 save: PMTIMER
(XEN) HVM2 save: MTRR
(XEN) HVM2 save: VIRIDIAN_DOMAIN
(XEN) HVM2 save: CPU_XSAVE
(XEN) HVM2 save: VIRIDIAN_VCPU
(XEN) HVM2 save: VMCE_VCPU
(XEN) HVM2 save: TSC_ADJUST
(XEN) HVM2 restore: CPU 0
(d2) HVM Loader
(d2) Detected Xen v4.7.20160826T08205
(d2) Xenbus rings @0xfeffc000, event channel 1
(d2) System requested SeaBIOS
(d2) CPU speed is 2793 MHz
(d2) Relocating guest memory for lowmem MMIO space disabled
(d2) PCI-ISA link 0 routed to IRQ5
(d2) PCI-ISA link 1 routed to IRQ10
(d2) PCI-ISA link 2 routed to IRQ11
(d2) PCI-ISA link 3 routed to IRQ5
(d2) pci dev 01:3 INTA->IRQ10
(d2) pci dev 02:0 INTA->IRQ11
(d2) pci dev 04:0 INTA->IRQ5
(d2) No RAM in high memory; setting high_mem resource base to 100000000
(d2) pci dev 03:0 bar 10 size 002000000: 0f0000008
(d2) pci dev 02:0 bar 14 size 001000000: 0f2000008
(d2) pci dev 04:0 bar 30 size 000040000: 0f3000000
(d2) pci dev 03:0 bar 30 size 000010000: 0f3040000
(d2) pci dev 03:0 bar 14 size 000001000: 0f3050000
(d2) pci dev 02:0 bar 10 size 000000100: 00000c001
(d2) pci dev 04:0 bar 10 size 000000100: 00000c101
(d2) pci dev 04:0 bar 14 size 000000100: 0f3051000
(d2) pci dev 01:1 bar 20 size 000000010: 00000c201
(d2) Multiprocessor initialisation:
(d2)  - CPU0 ... 36-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
(d2)  - CPU1 ... 36-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
(d2) Writing SMBIOS tables ...
(d2) Loading SeaBIOS ...
(d2) Creating MP tables ...
(d2) Loading ACPI ...
(d2) vm86 TSS at fc00a180
(d2) BIOS map:
(d2)  10000-100e3: Scratch space
(d2)  c0000-fffff: Main BIOS
(d2) E820 table:
(d2)  [00]: 00000000:00000000 - 00000000:000a0000: RAM
(d2)  HOLE: 00000000:000a0000 - 00000000:000c0000
(d2)  [01]: 00000000:000c0000 - 00000000:00100000: RESERVED
(d2)  [02]: 00000000:00100000 - 00000000:3f800000: RAM
(d2)  HOLE: 00000000:3f800000 - 00000000:fc000000
(d2)  [03]: 00000000:fc000000 - 00000001:00000000: RESERVED
(d2) Invoking SeaBIOS ...
(d2) SeaBIOS (version ?-20160831_083046-cloud109)
(d2) BUILD: gcc: (SUSE Linux) 4.8.5 binutils: (GNU Binutils; SUSE Linux 
Enterprise 1
(d2) 2) 2.25.0
(d2) 
(d2) Found Xen hypervisor signature at 40000000
(d2) Running on QEMU (i440fx)
(d2) xen: copy e820...
(d2) Relocating init from 0x000dc1d0 to 0x3f7ad7f0 (size 75648)
(d2) Found 7 PCI devices (max PCI bus is 00)
(d2) Allocated Xen hypercall page at 3f7ff000
(d2) Detected Xen v4.7.20160826T08205
(d2) xen: copy BIOS tables...
(d2) Copying SMBIOS entry point from 0x00010020 to 0x000f6d20
(d2) Copying MPTABLE from 0xfc001170/fc001180 to 0x000f6c20
(d2) Copying PIR from 0x00010040 to 0x000f6ba0
(d2) Copying ACPI RSDP from 0x000100c0 to 0x000f6b70
(d2) Using pmtimer, ioport 0xb008
(d2) Scan for VGA option rom
(d2) Running option rom at c000:0003
(d2) pmm call arg1=0
(d2) Turning on vga text mode console
(d2) SeaBIOS (version ?-20160831_083046-cloud109)
(d2) Machine UUID ed769347-e46a-481d-b03b-757b3fc53b12
(d2) All threads complete.
(d2) Found 0 lpt ports
(d2) Found 1 serial ports
(d2) ATA controller 1 at 1f0/3f4/0 (irq 14 dev 9)
(d2) ATA controller 2 at 170/374/0 (irq 15 dev 9)
(d2) PS2 keyboard initialized
(d2) ata0-0: QEMU HARDDISK ATA-7 Hard-Disk (4096 MiBytes)
(d2) Searching bootorder for: /pci@i0cf8/*@1,1/drive@0/disk@0
(d2) All threads complete.
(d2) Scan for option roms
(d2) Running option rom at c980:0003
(d2) pmm call arg1=1
(d2) pmm call arg1=0
(d2) pmm call arg1=1
(d2) pmm call arg1=0
(d2) Searching bootorder for: /pci@i0cf8/*@4
(d2) 
(d2) Press ESC for boot menu.
(d2) 
(d2) Searching bootorder for: HALT
(d2) drive 0x000f6b00: PCHS=8322/16/63 translation=lba LCHS=522/255/63 s=8388608
(d2) Space available for UMB: ca800-ed800, f6540-f6b00
(d2) Returned 258048 bytes of ZoneHigh
(d2) e820 map has 6 items:
(d2)   0: 0000000000000000 - 000000000009fc00 = 1 RAM
(d2)   1: 000000000009fc00 - 00000000000a0000 = 2 RESERVED
(d2)   2: 00000000000f0000 - 0000000000100000 = 2 RESERVED
(d2)   3: 0000000000100000 - 000000003f7ff000 = 1 RAM
(d2)   4: 000000003f7ff000 - 000000003f800000 = 2 RESERVED
(d2)   5: 00000000fc000000 - 0000000100000000 = 2 RESERVED
(d2) enter handle_19:
(d2)   NULL
(d2) Booting from ROM...
(d2) Booting from c980:0361

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