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[Xen-devel] [BUG] (hvm)-virtualization doesn't work with xen 4.4

Hi List,

This is a forwarded mail which i already sent to the xen-users mailing
list, however it was suggested to open a BUG about my problem which
seems to work via the xen-devel mailing list. :)

Below is my description about my problem - at the end i've added some
more information about my xen configuration. If you need some other
information, please let me know :)

----- Forwarded message from Michael Mair-Keimberger 
<m.mairkeimberger@xxxxxxxxx> -----

From: Michael Mair-Keimberger <m.mairkeimberger@xxxxxxxxx>
To: xen-users@xxxxxxxxxxxxx
Date: Sun, 27 Apr 2014 12:23:08 +0200
Subject: virtualization doesn't work with xen 4.4

Hi lists,

I've recently updated my xen setup from 4.1 to 4.4. Now it's impossible
for me to start any (basic) vm.
My basic config looks like this atm:

> on_poweroff='destroy'
> on_reboot='destroy'
> on_crash='destroy'
> 
> disk=['file:/home/michael/xen/win7x64s.img,hda,w','file:/home/michael/xen/dvd/win7x64.iso,hdc:cdrom,r']
> vif=['mac=DE:AD:CA:5E:13:37,bridge=br0,type=ioemu']
> 
> boot='d'
> 
> name = 'HVM_domU'
> builder = 'hvm'
> memory = 256
> vcpus = 2
> vnc = 1
> vnclisten = '0.0.0.0'
> vncdisplay = 1

When i try to start this, xen immediately kills the vm again. 
From the logs i get following:

xl-HVM_domU.log:

> Waiting for domain HVM_domU (domid 2) to die [pid 3429]
> Domain 2 has shut down, reason code 1 0x1
> Action for shutdown reason code 1 is destroy
> Domain 2 needs to be cleaned up: destroying the domain
> Done. Exiting now

xl dmesg only shows one returning error, which didn't help me at all as i
couldn't find any usefull help about this message:

> (XEN) io.c:204:d2 MMIO emulation failed @ 0008:ffff1f50: 4a 00 00 00 00 00 00 
> 00 36 99

Unfortunately it seems it has something todo with MMIO emulation failed.
However i have no idea what todo here.
I've checked if hvm does work, but since get following in xl dmesg, it
should work.

> (XEN) HVM: ASIDs enabled.
> (XEN) SVM: Supported advanced features:
> (XEN)  - Nested Page Tables (NPT)
> (XEN)  - Last Branch Record (LBR) Virtualisation
> (XEN)  - Next-RIP Saved on #VMEXIT
> (XEN)  - VMCB Clean Bits
> (XEN)  - DecodeAssists
> (XEN)  - Pause-Intercept Filter
> (XEN)  - TSC Rate MSR
> (XEN) HVM: SVM enabled
> (XEN) HVM: Hardware Assisted Paging (HAP) detected
> (XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB

This is on a gentoo system with kernel 3.14.1 and gcc 4.8.2.

Any help would be much appreciated.
-- 
greetings
Michael Mair-Keimberger



----- End forwarded message -----

Additional information:

About Gentoo / XEN
> Portage 2.2.10 (default/linux/amd64/13.0, gcc-4.8.2, glibc-2.19, 
> 3.14.2-gentoo x86_64)
> =================================================================
>                         System Settings
> =================================================================
> System uname: 
> Linux-3.14.2-gentoo-x86_64-AMD_FX-tm-8350_Eight-Core_Processor-with-gentoo-2.2
> KiB Mem:    16356184 total,  11323640 free
> KiB Swap:    8388600 total,   8388600 free
> Timestamp of tree: Sat, 03 May 2014 07:00:01 +0000
> ld GNU ld (GNU Binutils) 2.24
> app-shells/bash:          4.2_p47
> dev-lang/python:          2.7.6-r1, 3.3.5, 3.4.0
> dev-util/cmake:           2.8.12.2
> dev-util/pkgconfig:       0.28-r1
> sys-apps/baselayout:      2.2
> sys-apps/openrc:          0.12.4
> sys-apps/sandbox:         2.6-r1
> sys-devel/autoconf:       2.13, 2.69
> sys-devel/automake:       1.11.6, 1.14.1
> sys-devel/binutils:       2.24-r2
> sys-devel/gcc:            4.8.2
> sys-devel/gcc-config:     1.8
> sys-devel/libtool:        2.4.2
> sys-devel/make:           4.0-r1
> sys-kernel/linux-headers: 3.14 (virtual/os-headers)
> sys-libs/glibc:           2.19
> Repositories: gentoo local sunrise hasufell x11
> ACCEPT_KEYWORDS="amd64 ~amd64"
> ACCEPT_LICENSE="* -@EULA"
> CBUILD="x86_64-pc-linux-gnu"
> CFLAGS="-O2 -pipe -march=bdver2 -mprefer-avx128"
> CHOST="x86_64-pc-linux-gnu"
> CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt 
> /usr/share/themes/oxygen-gtk/gtk-2.0 /usr/share/themes/oxygen-gtk/gtk-3.0"
> CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d 
> /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild 
> /etc/sandbox.d /etc/terminfo"
> CXXFLAGS="-O2 -pipe -march=bdver2 -mprefer-avx128"
> DISTDIR="/usr/portage/distfiles"
> FCFLAGS="-O2 -pipe"
> FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks 
> ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs 
> protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs 
> unmerge-orphans userfetch userpriv usersandbox usersync"
> FFLAGS="-O2 -pipe"
> GENTOO_MIRRORS="http://distfiles.gentoo.org";
> LANG="en_US.utf8"
> LDFLAGS="-Wl,-O1 -Wl,--as-needed"
> MAKEOPTS="-j9"
> PKGDIR="/usr/portage/packages"
> PORTAGE_CONFIGROOT="/"
> PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times 
> --omit-dir-times --compress --force --whole-file --delete --stats 
> --human-readable --timeout=180 --exclude=/distfiles --exclude=/local 
> --exclude=/packages"
> PORTAGE_TMPDIR="/var/tmp"
> PORTDIR="/usr/portage"
> PORTDIR_OVERLAY="/media/majestix-public/overlays/local 
> /media/majestix-public/overlays/layman/sunrise 
> /media/majestix-public/overlays/layman/hasufell 
> /media/majestix-public/overlays/layman/x11"
> USE="acl alsa amd64 avx berkdb bzip2 cli cracklib crypt cups cxx dbus dri 
> exif flac gdbm graphite iconv icu ipv6 jpeg kde lzma mmx mmxext modules mp3 
> multilib ncurses nls nptl opengl openmp pam pcre png qt4 readline sdl 
> semantic-desktop session sse sse2 sse3 sse4_1 ssl ssse3 svg tcpd threads tiff 
> truetype unicode vdpau vim-syntax xinerama zlib" ABI_X86="64" 
> ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x 
> ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 
> trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core 
> authz_core socache_shmcb unixd actions alias auth_basic authn_alias 
> authn_anon authn_dbm authn_default authn_file authz_dbm authz_default 
> authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid 
> dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache 
> filter headers include info log_config logio mem_cache mime mime_magic 
> negotiation rewrite setenvif speling status unique_id userdir usertrack 
> vhost_alias" CALLIGRA_FEATURES="krita sheets words karbon" CAMERAS="ptp2" 
> COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" 
> ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin 
> garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle 
> oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox 
> ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev" KERNEL="linux" 
> LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses 
> text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" 
> LINGUAS="en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" 
> PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" 
> RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="r600 radeon 
> radeonsi" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset 
> ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark 
> ipmark dhcpmac delude chaos account"
> Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, 
> PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, 
> PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON
> 
> =================================================================
>                         Package Settings
> =================================================================
> 
> app-emulation/xen-4.4.0-r1 was built with the following:
> USE="-custom-cflags -debug -efi -flask -xsm"
> CFLAGS=""
> 
> 
> app-emulation/xen-tools-4.4.0-r1 was built with the following:
> USE="hvm pam qemu screen -api -custom-cflags -debug -doc -flask -ocaml 
> -pygrub -python -static-libs -system-qemu" PYTHON_SINGLE_TARGET="python2_7" 
> PYTHON_TARGETS="python2_7"
> CFLAGS=""
> CXXFLAGS="-O2 -pipe -march=bdver2 -mprefer-avx128 -fno-strict-overflow"
> LDFLAGS=""

xldmesg (Note: I've disabled all commandline settings in this case):

> Xen 4.4.0
> (XEN) Xen version 4.4.0 (@xonet.at) (x86_64-pc-linux-gnu-gcc (Gentoo 4.8.2 
> p1.3r1, pie-0.5.8r1) 4.8.2) debug=n Sat Apr 12 09:46:34 CEST 2014
> (XEN) Latest ChangeSet: 
> (XEN) Bootloader: GRUB 2.02~beta1
> (XEN) Command line: 
> (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 3 MBR signatures
> (XEN)  Found 3 EDD information structures
> (XEN) Xen-e820 RAM map:
> (XEN)  0000000000000000 - 000000000009f800 (usable)
> (XEN)  000000000009f800 - 00000000000a0000 (reserved)
> (XEN)  00000000000f0000 - 0000000000100000 (reserved)
> (XEN)  0000000000100000 - 00000000bfda0000 (usable)
> (XEN)  00000000bfda0000 - 00000000bfdd1000 (ACPI NVS)
> (XEN)  00000000bfdd1000 - 00000000bfe00000 (ACPI data)
> (XEN)  00000000bfe00000 - 00000000bff00000 (reserved)
> (XEN)  00000000e0000000 - 00000000f0000000 (reserved)
> (XEN)  00000000fec00000 - 0000000100000000 (reserved)
> (XEN)  0000000100000000 - 000000043f000000 (usable)
> (XEN) ACPI: RSDP 000F6BF0, 0014 (r0 GBT   )
> (XEN) ACPI: RSDT BFDD1000, 0050 (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
> (XEN) ACPI: FACP BFDD1080, 0074 (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
> (XEN) ACPI: DSDT BFDD1100, 7997 (r1 GBT    GBTUACPI     1000 MSFT  3000000)
> (XEN) ACPI: FACS BFDA0000, 0040
> (XEN) ACPI: MSDM BFDD8B80, 0055 (r3 GBT    GBTUACPI 42302E31 GBTU  1010101)
> (XEN) ACPI: HPET BFDD8C00, 0038 (r1 GBT    GBTUACPI 42302E31 GBTU       98)
> (XEN) ACPI: MCFG BFDD8C40, 003C (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
> (XEN) ACPI: EUDS BFDD8CC0, 0740 (r1 GBT                    0             0)
> (XEN) ACPI: MATS BFDD9400, 0034 (r1 GBT                    0             0)
> (XEN) ACPI: TAMG BFDD9470, 0182 (r1 GBT    GBT   B0 5455312E BG 53450101)
> (XEN) ACPI: APIC BFDD8AC0, 00BC (r1 GBT    GBTUACPI 42302E31 GBTU  1010101)
> (XEN) ACPI: MATS BFDD9600, 66BB (r1        MATS RCM 80000001 INTL 20061109)
> (XEN) ACPI: SSDT BFDDFD30, 1714 (r1 AMD    POWERNOW        1 AMD         1)
> (XEN) ACPI: IVRS BFDE14C0, 0100 (r1  AMD     RD890S   202031 AMD         0)
> (XEN) System RAM: 16365MB (16758012kB)
> (XEN) Domain heap initialised
> (XEN) Processor #0 5:2 APIC version 16
> (XEN) Processor #1 5:2 APIC version 16
> (XEN) Processor #2 5:2 APIC version 16
> (XEN) Processor #3 5:2 APIC version 16
> (XEN) Processor #4 5:2 APIC version 16
> (XEN) Processor #5 5:2 APIC version 16
> (XEN) Processor #6 5:2 APIC version 16
> (XEN) Processor #7 5:2 APIC version 16
> (XEN) IOAPIC[0]: apic_id 8, version 33, address 0xfec00000, GSI 0-23
> (XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
> (XEN) Using scheduler: SMP Credit Scheduler (credit)
> (XEN) Detected 4026.939 MHz processor.
> (XEN) Initing memory sharing.
> (XEN) xstate_init: using cntxt_size: 0x3c0 and states: 0x4000000000000007
> (XEN) IVHD Error: Conflicting IO-APIC 0x8 entries
> (XEN) AMD-Vi: Error initialization
> (XEN) I/O virtualisation disabled
> (XEN) ENABLING IO-APIC IRQs
> (XEN)  -> Using new ACK method
> (XEN) Platform timer is 14.318MHz HPET
> (XEN) Allocated console ring of 16 KiB.
> (XEN) HVM: ASIDs enabled.
> (XEN) SVM: Supported advanced features:
> (XEN)  - Nested Page Tables (NPT)
> (XEN)  - Last Branch Record (LBR) Virtualisation
> (XEN)  - Next-RIP Saved on #VMEXIT
> (XEN)  - VMCB Clean Bits
> (XEN)  - DecodeAssists
> (XEN)  - Pause-Intercept Filter
> (XEN)  - TSC Rate MSR
> (XEN) HVM: SVM enabled
> (XEN) HVM: Hardware Assisted Paging (HAP) detected
> (XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB
> (XEN) spurious 8259A interrupt: IRQ7.
> (XEN) CPU1: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) CPU2: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) CPU3: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) CPU4: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) CPU5: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) CPU6: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) CPU7: No irq handler for vector e7 (IRQ -2147483648)
> (XEN) Brought up 8 CPUs
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN)  Xen  kernel: 64-bit, lsb, compat32
> (XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1bc5000
> (XEN) PHYSICAL MEMORY ARRANGEMENT:
> (XEN)  Dom0 alloc.:   000000042c000000->0000000430000000 (4093756 pages to be 
> allocated)
> (XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN)  Loaded kernel: ffffffff81000000->ffffffff81bc5000
> (XEN)  Init. ramdisk: ffffffff81bc5000->ffffffff81bc5000
> (XEN)  Phys-Mach map: ffffffff81bc5000->ffffffff83b209e0
> (XEN)  Start info:    ffffffff83b21000->ffffffff83b214b4
> (XEN)  Page tables:   ffffffff83b22000->ffffffff83b43000
> (XEN)  Boot stack:    ffffffff83b43000->ffffffff83b44000
> (XEN)  TOTAL:         ffffffff80000000->ffffffff83c00000
> (XEN)  ENTRY ADDRESS: ffffffff816701f0
> (XEN) Dom0 has maximum 8 VCPUs
> (XEN) Scrubbing Free RAM: .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 280kB init memory.
> (XEN) traps.c:2514:d0 Domain attempted WRMSR 00000000c0010201 from 
> 0x0000000000000000 to 0x000000000000ffff.
> (XEN) mm.c:809: d0: Forcing read-only access to MFN e0002
> (XEN) io.c:204:d1 MMIO emulation failed @ 0008:ffff1f50: 4a 00 00 00 00 00 00 
> 00 36 99
> (XEN) io.c:204:d2 MMIO emulation failed @ 0008:ffff1f50: 4a 00 00 00 00 00 00 
> 00 36 99

xlinfo (here you see my usual commandline settings):

> host                   : asterix
> release                : 3.14.1-gentoo
> version                : #1 SMP PREEMPT Fri Apr 25 19:09:15 CEST 2014
> machine                : x86_64
> nr_cpus                : 8
> max_cpu_id             : 7
> nr_nodes               : 1
> cores_per_socket       : 4
> threads_per_core       : 2
> cpu_mhz                : 4026
> hw_caps                : 
> 178bf3ff:2fd3fbff:00000000:00001700:36983203:00000000:01ebbfff:00000008
> virt_caps              : hvm hvm_directio
> total_memory           : 16365
> free_memory            : 7982
> sharing_freed_memory   : 0
> sharing_used_memory    : 0
> outstanding_claims     : 0
> free_cpus              : 0
> xen_major              : 4
> xen_minor              : 4
> xen_extra              : .0
> xen_version            : 4.4.0
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 
> hvm-3.0-x86_32p hvm-3.0-x86_64 
> xen_scheduler          : credit
> xen_pagesize           : 4096
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : 
> xen_commandline        : dom0_mem=8192M,max:8192M iommu=debug,verbose xsave=1 
> dom0_max_vcpus=4 dom0_vcpus_pin ivrs_ioapic[8]=00:14.0
> cc_compiler            : x86_64-pc-linux-gnu-gcc (Gentoo 4.8.2 p1.3r1, 
> pie-0.5.8r1) 4.8.
> cc_compile_by          : 
> cc_compile_domain      : xonet.at
> cc_compile_date        : Sat Apr 12 09:46:34 CEST 2014
> xend_config_format     : 4

ifconfig -a

> br0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu 1500
>         inet 192.168.2.31  netmask 255.255.255.0  broadcast 192.168.2.255
>         inet6 fe80::52e5:49ff:fe47:f22d  prefixlen 64  scopeid 0x20<link>
>         ether 50:e5:49:47:f2:2d  txqueuelen 0  (Ethernet)
>         RX packets 374520  bytes 340313477 (324.5 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 605052  bytes 709623670 (676.7 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         inet6 fe80::52e5:49ff:fe47:f22d  prefixlen 64  scopeid 0x20<link>
>         ether 50:e5:49:47:f2:2d  txqueuelen 1000  (Ethernet)
>         RX packets 447131  bytes 350316505 (334.0 MiB)
>         RX errors 0  dropped 497  overruns 0  frame 0
>         TX packets 605060  bytes 709649264 (676.7 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
>         inet 127.0.0.1  netmask 255.0.0.0
>         inet6 ::1  prefixlen 128  scopeid 0x10<host>
>         loop  txqueuelen 0  (Local Loopback)
>         RX packets 4455  bytes 7028932 (6.7 MiB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 4455  bytes 7028932 (6.7 MiB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Various logfile output's while trying different methods regarding qemu:

xen build with bundled qemu and device_model="qemu-xen"
> libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate 
> with 1 nodes, 8 cpus and 7981 KB free selected
> xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x9f6e4
> xc: detail: elf_parse_binary: memory: 0x100000 -> 0x19f6e4
> xc: detail: VIRTUAL MEMORY ARRANGEMENT:
> Loader:        0000000000100000->000000000019f6e4
> Modules:       0000000000000000->0000000000000000
> TOTAL:         0000000000000000->000000000f800000
> ENTRY ADDRESS: 0000000000100000
> xc: detail: PHYSICAL MEMORY ALLOCATION:
> 4KB PAGES: 0x0000000000000200
> 2MB PAGES: 0x000000000000007b
> 1GB PAGES: 0x0000000000000000
> xc: detail: elf_load_binary: phdr 0 at 0x7f9312c50000 -> 0x7f9312ce656d
              
xen build with bundled qemu and device_model="qemu-xen-traditional"
using device_model_override to point to system qemu (used qemu-2.0):
> libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate 
> with 1 nodes, 8 cpus and 7981 KB free selected
> xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x9f6e4
> xc: detail: elf_parse_binary: memory: 0x100000 -> 0x19f6e4
> xc: detail: VIRTUAL MEMORY ARRANGEMENT:
> Loader:        0000000000100000->000000000019f6e4
> Modules:       0000000000000000->0000000000000000
> TOTAL:         0000000000000000->000000000fc00000
> ENTRY ADDRESS: 0000000000100000
> xc: detail: PHYSICAL MEMORY ALLOCATION:
> 4KB PAGES: 0x0000000000000200
> 2MB PAGES: 0x000000000000007d
> 1GB PAGES: 0x0000000000000000
> xc: detail: elf_load_binary: phdr 0 at 0x7f2a1d548000 -> 0x7f2a1d5de56d
> libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 37 device 
> model: spawn failed (rc=-3)
> libxl: error: libxl_create.c:1186:domcreate_devmodel_started: device model 
> did not start: -3
> libxl: error: libxl_dm.c:1475:kill_device_model: Device Model already exited

xen build with system qemu support (qemu-2.0) and device_model="qemu-xen"
> libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate 
> with 1 nodes, 8 cpus and 7981 KB free selected
> xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x9f6e4
> xc: detail: elf_parse_binary: memory: 0x100000 -> 0x19f6e4
> xc: detail: VIRTUAL MEMORY ARRANGEMENT:
> Loader:        0000000000100000->000000000019f6e4
> Modules:       0000000000000000->0000000000000000
> TOTAL:         0000000000000000->000000000f800000
> ENTRY ADDRESS: 0000000000100000
> xc: detail: PHYSICAL MEMORY ALLOCATION:
> 4KB PAGES: 0x0000000000000200
> 2MB PAGES: 0x000000000000007b
> 1GB PAGES: 0x0000000000000000
> xc: detail: elf_load_binary: phdr 0 at 0x7f26ba560000 -> 0x7f26ba5f656d
> libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 23 device 
> model: spawn failed (rc=-3)
> libxl: error: libxl_create.c:1186:domcreate_devmodel_started: device model 
> did not start: -3
> libxl: error: libxl_dm.c:1475:kill_device_model: Device Model already exited

xen build with system qemu support (qemu-2.0) and
device_model="qemu-xen-traditional"
> libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate 
> with 1 nodes, 8 cpus and 7981 KB free selected
> xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x9f6e4
> xc: detail: elf_parse_binary: memory: 0x100000 -> 0x19f6e4
> xc: detail: VIRTUAL MEMORY ARRANGEMENT:
> Loader:        0000000000100000->000000000019f6e4
> Modules:       0000000000000000->0000000000000000
> TOTAL:         0000000000000000->000000000f800000
> ENTRY ADDRESS: 0000000000100000
> xc: detail: PHYSICAL MEMORY ALLOCATION:
> 4KB PAGES: 0x0000000000000200
> 2MB PAGES: 0x000000000000007b
> 1GB PAGES: 0x0000000000000000
> xc: detail: elf_load_binary: phdr 0 at 0x7ff502be8000 -> 0x7ff502c7e56d

lspci -vvv is attached as a file.

Hope all this information is useful. Please let me know if you need more
information

-- 
greetings
Michael Mair-Keimberger

Attachment: lspcivvv.txt
Description: Text document

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Description: Digital signature

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