Pkg xen devel - Feb 2015 - Bug#776742: Info received (Bug#776742: xen-utils-common: no support for VGA Passthrough)

Package: xen-utils-common
Version: 4.4.1-6
Severity: normal

Dear Maintainer,

(There appear to be several reports on the BTS with concerns relating to
this report. Some unarchiving/merging may be necessary. Reassignment may
be needed as well since I'm not sure which package this problem would
fall under. Ultimately decided to file with xen-utils-common with 'xl'
being the frontend interface for the xen system.)


It looks like VGA passthrough is currently unsupported/broken in the xen
system packages or in its dependencies.

With gfx_passthru=0 (default), I'm able to boot a domU and access its
interface using vnc. However if I enable gfx_passthru, the domU fails to
boot, and I'm greeted with an error message telling me the device model
failed to spawn:

    libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 16 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

According to xl.cfg(5) this is to be expected since the default
'upstream qemu-xen device-model currently does not have support for
gfx_passthru.'

xl.cfg(5) also mentions that 'gfx_passthru is currently only supported
with the qemu-xen-traditional device-model'. However if I request this
device-model be used instead with:

    device_model_version="qemu-xen-traditional"

I receive another error message mentioning that this device-model does
not exist:

    libxl: error: libxl_dm.c:1233:libxl__spawn_local_dm: device model
/usr/lib/xen-4.4/bin/qemu-dm is not executable: No such file or directory
    libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: (null): spawn
failed (rc=-3)
    libxl: error: libxl_create.c:1186:domcreate_devmodel_started: device model
did not start: -3
    libxl: error: libxl_dm.c:1467:kill_device_model: unable to find device model
pid in /local/domain/17/image/device-model-pid
    libxl: error: libxl.c:1421:libxl__destroy_domid: libxl__destroy_device_model
failed for 17

But again, this is to be expected since qemu-traditional support has
been removed in recent xen system packages:

    xen (4.4.0-1) unstable; urgency=medium
    
      [ Bastian Blank ]
          *** snip ***
    
      [ Ian Campbell ]
          *** snip ***
      * Disable qemu-traditional and rombios support using new configure option
        instead of by patching. No need to build-depend on ipxe any more.
          *** snip ***
    
     -- Bastian Blank <waldi at debian.org>  Sat, 09 Aug 2014 13:09:00
+0200

I understand there is a desire to shift away from qemu-xen-traditional,
and I think this is fine, but has there been any movement upstream to
add support for gfx_passthru in what is known as the 'qemu-xen'
device-model? (honest question... I'm not too familiar with qemu/xen
development) Would it be too much to ask for the re-enablement of
'qemu-traditional' in the meantime?


-- System Information:
Debian Release: 8.0
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xen-utils-common depends on:
ii  lsb-base        4.1+Debian13+nmu1
ii  python          2.7.8-2
ii  ucf             3.0030
ii  udev            215-11
ii  xenstore-utils  4.4.1-6

xen-utils-common recommends no packages.

xen-utils-common suggests no packages.

-- no debconf information

For reference, I've attached the xl domU configuration I'm working with
along with verbose output of xl create with the error messages I'm seeing

xlcreate-nogfxpt: #gfx_passthru=0
xlcreate-gfxpt:   gfx_passthru=1
xlcreate-gfxpt-dm-traditional:
                  gfx_passthru=1
                  device_model_version="qemu-xen-traditional"

For further reference, here are a few bugs I've found which may be
related to this problem:

#688311 -- xen-utils-4.2: qemu-dm not available
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=688311
#733865 --  xen-utils-4.3: qemu-dm is not executable: No such file or
directory
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=733865
#746156 --  libvirt-bin: Wrong parameters for qemu-dm
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=746156
-------------- next part --------------
Parsing config from /etc/xen/xldomu-windows7
libxl: debug: libxl_create.c:1342:do_domain_create: ao 0x14f81c0: create:
how=(nil) callback=(nil) poller=0x14f7880
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda
spec.backend=unknown
libxl: debug: libxl_device.c:197:disk_try_backend: Disk vdev=xvda, backend phy
unsuitable as phys path not a block device
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=xvda,
using backend qdisk
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdc
spec.backend=unknown
libxl: debug: libxl_device.c:197:disk_try_backend: Disk vdev=xvdc, backend phy
unsuitable as phys path not a block device
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=xvdc,
using backend qdisk
libxl: debug: libxl_create.c:797:initiate_domain_create: running bootloader
libxl: debug: libxl_bootloader.c:321:libxl__bootloader_run: not a PV domain,
skipping bootloader
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14f8a58:
deregister unregistered
libxl: debug: libxl_numa.c:478:libxl__get_numa_candidate: New best NUMA
placement candidate found: nr_nodes=1, nr_cpus=8, nr_vcpus=12, free_memkb=8608
libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate with
1 nodes, 8 cpus and 8608 KB free selected
xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x59658
xc: detail: elf_parse_binary: memory: 0x100000 -> 0x159658
xc: detail: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->0000000000159658
  Modules:       0000000000000000->0000000000000000
  TOTAL:         0000000000000000->00000001ff800000
  ENTRY ADDRESS: 0000000000100648
xc: detail: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000009fb
  1GB PAGES: 0x0000000000000003
xc: detail: elf_load_binary: phdr 0 at 0x7f3e99480000 -> 0x7f3e994d060d
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda
spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14fa110:
deregister unregistered
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdc
spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14faf30:
deregister unregistered
libxl: debug: libxl_dm.c:1303:libxl__spawn_local_dm: Spawning device-model
/usr/bin/qemu-system-i386 with arguments:
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   /usr/bin/qemu-system-i386
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -xen-domid
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   20
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -chardev
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-20,server,nowait
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -mon
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
chardev=libxl-cmd,mode=control
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -nodefaults
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -name
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   windows7
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -vnc
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   192.168.1.198:0,to=99
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   cirrus-vga
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -global
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   vga.vram_size_mb=8
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -boot
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   order=dc
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -smp
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   4,maxcpus=4
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
rtl8139,id=nic0,netdev=net0,mac=00:16:3e:07:8a:df
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -netdev
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
type=tap,id=net0,ifname=vif20.0-emu,script=no,downscript=no
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -machine
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   xenfv
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -m
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   8184
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -drive
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
file=/domu-w7.img,if=ide,index=0,media=disk,format=raw,cache=writeback
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -drive
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
file=/w7-inst.iso,if=ide,index=2,media=cdrom,format=raw,cache=writeback,id=ide-51744
libxl: debug: libxl_event.c:570:libxl__ev_xswatch_register: watch w=0x14f8c90
wpath=/local/domain/0/device-model/20/state token=3/0: register slotnum=3
libxl: debug: libxl_create.c:1356:do_domain_create: ao 0x14f81c0: inprogress:
poller=0x14f7880, flags=i
libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0x14f8c90
wpath=/local/domain/0/device-model/20/state token=3/0: event
epath=/local/domain/0/device-model/20/state
libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0x14f8c90
wpath=/local/domain/0/device-model/20/state token=3/0: event
epath=/local/domain/0/device-model/20/state
libxl: debug: libxl_event.c:606:libxl__ev_xswatch_deregister: watch w=0x14f8c90
wpath=/local/domain/0/device-model/20/state token=3/0: deregister slotnum=3
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14f8c90:
deregister unregistered
libxl: debug: libxl_qmp.c:696:libxl__qmp_initialize: connected to
/var/run/xen/qmp-libxl-20
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: qmp
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "qmp_capabilities",
    "id": 1
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "query-chardev",
    "id": 2
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "query-vnc",
    "id": 3
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_event.c:570:libxl__ev_xswatch_register: watch w=0x14ff808
wpath=/local/domain/0/backend/vif/20/0/state token=3/1: register slotnum=3
libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0x14ff808
wpath=/local/domain/0/backend/vif/20/0/state token=3/1: event
epath=/local/domain/0/backend/vif/20/0/state
libxl: debug: libxl_event.c:657:devstate_watch_callback: backend
/local/domain/0/backend/vif/20/0/state wanted state 2 still waiting state 1
libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0x14ff808
wpath=/local/domain/0/backend/vif/20/0/state token=3/1: event
epath=/local/domain/0/backend/vif/20/0/state
libxl: debug: libxl_event.c:653:devstate_watch_callback: backend
/local/domain/0/backend/vif/20/0/state wanted state 2 ok
libxl: debug: libxl_event.c:606:libxl__ev_xswatch_deregister: watch w=0x14ff808
wpath=/local/domain/0/backend/vif/20/0/state token=3/1: deregister slotnum=3
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14ff808:
deregister unregistered
libxl: debug: libxl_device.c:1023:device_hotplug: calling hotplug script:
/etc/xen/scripts/vif-bridge online
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14ff890:
deregister unregistered
libxl: debug: libxl_device.c:1023:device_hotplug: calling hotplug script:
/etc/xen/scripts/vif-bridge add
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14ff890:
deregister unregistered
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x14ff890:
deregister unregistered
libxl: error: libxl_pci.c:990:libxl__device_pci_reset: The kernel doesn't
support reset from sysfs for PCI device 0000:06:00.0
libxl: debug: libxl_qmp.c:696:libxl__qmp_initialize: connected to
/var/run/xen/qmp-libxl-20
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: qmp
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "qmp_capabilities",
    "id": 1
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "device_add",
    "id": 2,
    "arguments": {
        "driver": "xen-pci-passthrough",
        "id": "pci-pt-06_00.0",
        "hostaddr": "0000:06:00.0"
    }
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "query-pci",
    "id": 3
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: error: libxl_pci.c:990:libxl__device_pci_reset: The kernel doesn't
support reset from sysfs for PCI device 0000:06:00.1
libxl: debug: libxl_qmp.c:696:libxl__qmp_initialize: connected to
/var/run/xen/qmp-libxl-20
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: qmp
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "qmp_capabilities",
    "id": 1
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "device_add",
    "id": 2,
    "arguments": {
        "driver": "xen-pci-passthrough",
        "id": "pci-pt-06_00.1",
        "hostaddr": "0000:06:00.1"
    }
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{
    "execute": "query-pci",
    "id": 3
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_pci.c:81:libxl__create_pci_backend: Creating pci backend
libxl: debug: libxl_event.c:1761:libxl__ao_progress_report: ao 0x14f81c0:
progress report: ignored
libxl: debug: libxl_event.c:1591:libxl__ao_complete: ao 0x14f81c0: complete,
rc=0
libxl: debug: libxl_event.c:1563:libxl__ao__destroy: ao 0x14f81c0: destroy
xc: debug: hypercall buffer: total allocations:1923 total releases:1923
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:1915 misses:4 toobig:4

-------------- next part --------------
Parsing config from /etc/xen/xldomu-windows7
libxl: debug: libxl_create.c:1342:do_domain_create: ao 0xddb1c0: create:
how=(nil) callback=(nil) poller=0xdda880
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda
spec.backend=unknown
libxl: debug: libxl_device.c:197:disk_try_backend: Disk vdev=xvda, backend phy
unsuitable as phys path not a block device
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=xvda,
using backend qdisk
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdc
spec.backend=unknown
libxl: debug: libxl_device.c:197:disk_try_backend: Disk vdev=xvdc, backend phy
unsuitable as phys path not a block device
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=xvdc,
using backend qdisk
libxl: debug: libxl_create.c:797:initiate_domain_create: running bootloader
libxl: debug: libxl_bootloader.c:321:libxl__bootloader_run: not a PV domain,
skipping bootloader
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0xddba58:
deregister unregistered
libxl: debug: libxl_numa.c:478:libxl__get_numa_candidate: New best NUMA
placement candidate found: nr_nodes=1, nr_cpus=8, nr_vcpus=12, free_memkb=8608
libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate with
1 nodes, 8 cpus and 8608 KB free selected
xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x59658
xc: detail: elf_parse_binary: memory: 0x100000 -> 0x159658
xc: detail: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->0000000000159658
  Modules:       0000000000000000->0000000000000000
  TOTAL:         0000000000000000->00000001ff800000
  ENTRY ADDRESS: 0000000000100648
xc: detail: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000009fb
  1GB PAGES: 0x0000000000000003
xc: detail: elf_load_binary: phdr 0 at 0x7f6d19228000 -> 0x7f6d1927860d
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda
spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0xddd110:
deregister unregistered
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdc
spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0xdddf30:
deregister unregistered
libxl: debug: libxl_dm.c:1303:libxl__spawn_local_dm: Spawning device-model
/usr/bin/qemu-system-i386 with arguments:
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   /usr/bin/qemu-system-i386
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -xen-domid
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   22
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -chardev
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-22,server,nowait
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -mon
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
chardev=libxl-cmd,mode=control
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -nodefaults
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -name
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   windows7
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -vnc
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   192.168.1.198:0,to=99
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   cirrus-vga
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -global
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   vga.vram_size_mb=8
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -boot
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   order=dc
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -smp
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   4,maxcpus=4
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
rtl8139,id=nic0,netdev=net0,mac=00:16:3e:3f:28:eb
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -netdev
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
type=tap,id=net0,ifname=vif22.0-emu,script=no,downscript=no
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -gfx_passthru
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -machine
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   xenfv
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -m
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   8184
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -drive
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
file=/domu-w7.img,if=ide,index=0,media=disk,format=raw,cache=writeback
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -drive
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:  
file=/w7-inst.iso,if=ide,index=2,media=cdrom,format=raw,cache=writeback,id=ide-51744
libxl: debug: libxl_event.c:570:libxl__ev_xswatch_register: watch w=0xddbc90
wpath=/local/domain/0/device-model/22/state token=3/0: register slotnum=3
libxl: debug: libxl_create.c:1356:do_domain_create: ao 0xddb1c0: inprogress:
poller=0xdda880, flags=i
libxl: debug: libxl_event.c:514:watchfd_callback: watch w=0xddbc90
wpath=/local/domain/0/device-model/22/state token=3/0: event
epath=/local/domain/0/device-model/22/state
libxl: debug: libxl_event.c:606:libxl__ev_xswatch_deregister: watch w=0xddbc90
wpath=/local/domain/0/device-model/22/state token=3/0: deregister slotnum=3
libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 22 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
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0xde0e00:
deregister unregistered
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0xde0f20:
deregister unregistered
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0xde1160:
deregister unregistered
libxl: debug: libxl_event.c:1591:libxl__ao_complete: ao 0xddb1c0: complete,
rc=-3
libxl: debug: libxl_event.c:1563:libxl__ao__destroy: ao 0xddb1c0: destroy
xc: debug: hypercall buffer: total allocations:2512 total releases:2512
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:2504 misses:4 toobig:4

-------------- next part --------------
Parsing config from /etc/xen/xldomu-windows7
libxl: debug: libxl_create.c:1342:do_domain_create: ao 0x11661c0: create:
how=(nil) callback=(nil) poller=0x1165880
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda
spec.backend=unknown
libxl: debug: libxl_device.c:197:disk_try_backend: Disk vdev=xvda, backend phy
unsuitable as phys path not a block device
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=xvda,
using backend qdisk
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdc
spec.backend=unknown
libxl: debug: libxl_device.c:197:disk_try_backend: Disk vdev=xvdc, backend phy
unsuitable as phys path not a block device
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=xvdc,
using backend qdisk
libxl: debug: libxl_create.c:797:initiate_domain_create: running bootloader
libxl: debug: libxl_bootloader.c:321:libxl__bootloader_run: not a PV domain,
skipping bootloader
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x1166a58:
deregister unregistered
libxl: debug: libxl_numa.c:478:libxl__get_numa_candidate: New best NUMA
placement candidate found: nr_nodes=1, nr_cpus=8, nr_vcpus=12, free_memkb=8608
libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate with
1 nodes, 8 cpus and 8608 KB free selected
xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x59658
xc: detail: elf_parse_binary: memory: 0x100000 -> 0x159658
xc: detail: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->0000000000159658
  Modules:       0000000000000000->0000000000000000
  TOTAL:         0000000000000000->00000001ffc00000
  ENTRY ADDRESS: 0000000000100648
xc: detail: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000009fd
  1GB PAGES: 0x0000000000000003
xc: detail: elf_load_binary: phdr 0 at 0x7faffc448000 -> 0x7faffc49860d
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda
spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x1168110:
deregister unregistered
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdc
spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x1168f30:
deregister unregistered
libxl: error: libxl_dm.c:1233:libxl__spawn_local_dm: device model
/usr/lib/xen-4.4/bin/qemu-dm is not executable: No such file or directory
libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: (null): spawn failed
(rc=-3)
libxl: error: libxl_create.c:1186:domcreate_devmodel_started: device model did
not start: -3
libxl: error: libxl_dm.c:1467:kill_device_model: unable to find device model pid
in /local/domain/23/image/device-model-pid
libxl: error: libxl.c:1421:libxl__destroy_domid: libxl__destroy_device_model
failed for 23
libxl: debug: libxl_create.c:1356:do_domain_create: ao 0x11661c0: inprogress:
poller=0x1165880, flags=i
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x116b350:
deregister unregistered
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x116b5d0:
deregister unregistered
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x116b8b0:
deregister unregistered
libxl: debug: libxl_event.c:1591:libxl__ao_complete: ao 0x11661c0: complete,
rc=-3
libxl: debug: libxl_event.c:1563:libxl__ao__destroy: ao 0x11661c0: destroy
xc: debug: hypercall buffer: total allocations:2562 total releases:2562
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:2554 misses:4 toobig:4

Oops

Attached should by the domU configuration referenced, but missing from
my last mail.
-------------- next part --------------
# ========================================# Windows 7 domU
# ========================================
# Configure an HVM rather than PV guest
builder = "hvm"

# Guest name
name = "windows7"

# Enable Microsoft Hyper-V compatible PV
#viridian = 1

# Initial memory allocation (MB)
memory = 8192

# Number of VCPUs
vcpus=4

# Network devices
#    docs/misc/xl-network-configuration.markdown
vif=[ '' ]

# Disk devices
#    docs/misc/xl-disk-configuration.txt
disk=[ '/domu-w7.img,,xvda','/w7-inst.iso,,xvdc,devtype=cdrom' ]

# Boot Device order
#     c - hard disk
#     d - cd-rom
#     n - network/PXE
boot="dc"
#boot="c"

# Enable graphics device PCI passthrough
gfx_passthru=1

# PCI devices to passthrough to windows
#   0000:04:00.0 - USB 3.0 above USB BIOS Flashback button
#   0000:06:00.* - secondary graphics card
#pci=[ '0000:04:00.0','0000:06:00.*' ]
pci=[ '0000:06:00.0', '0000:06:00.1' ]

# Disable emulated USB
#   -- we passthrough USB devices
usb=0

vnclisten="192.168.1.198"

# Specify device model for VGA passthrough
# Use device model qemu-xen (upstream default)
#device_model_version="qemu-xen"
#device_model_override="/usr/bin/qemu-system-x86_64"

# Use device model qemu-xen-traditional
#   -- supposedly supports VGA passthrough
#device_model_version="qemu-xen-traditional"
#device_model_override="/usr/bin/qemu-system-x86_64"

On Sat, 2015-01-31 at 19:18 -0600, Brian Paterni wrote:
>       * Disable qemu-traditional and rombios support using new configure
option
>         instead of by patching. No need to build-depend on ipxe any more.
Not that this isn't when qemu-trad was disabled in the Debian packaging,
just switching the mechanism by which it is disabled to one supporte dby
upstream.
> has there been any movement upstream to
> add support for gfx_passthru in what is known as the 'qemu-xen'
> device-model? (honest question... I'm not too familiar with qemu/xen
> development) Would it be too much to ask for the re-enablement of
> 'qemu-traditional' in the meantime?
I'm not following very closely, so I don't know the exact state, but
someone from Intel has been posting patches against upstream qemu and
the Xen tools to enable gfx passthru with upstream qemu in the last few
of weeks (check the upstream xen-devel archives), I would expect them to
land in Xen 4.6, but I don't know what their exact scope is (i.e. if
they are Intel GPU specific etc, I don't know).

Ian.

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