problem starting hvm domain with stubdoms with "xl create"

[Jeremy Fitzhardinge <jeremy@goop.org>]

xl create is failing with a timeout waiting on the device model.  I'm
pretty sure its because its looking at the wrong domid for the device
model (the main domain's, not the stubdom; I added to the log message to
print which domain it's waiting on), but I haven't tracked down a
specific fix yet.

    J

sh-4.0# xl create -d /etc/xen/win7-ctxs 
Parsing config file /etc/xen/win7-ctxs
*** domain_create_info ***
hvm: 1
hap: 0
oos: 1
ssidref: 0
name: win7-ctxs
uuid: 412b35f0-6a0c-4f26-8595-c79a5940b4a1
cpupool: Pool-0 (0)
xsdata: (null)
platformdata: (null)



*** domain_build_info ***
timer_mode: -1
hpet: 1
vpt_align: -1
max_vcpus: 2
tsc_mode: 0
max_memkb: 1048576
target_memkb: 1048576
kernel: /usr/lib/xen/boot/hvmloader
hvm: 1
video_memkb: 8192
shadow_memkb: 1280
    pae: 1
    apic: 1
    acpi: 1
    nx: 1
    viridian: 1



*** disks_info: 0 ***
backend_domid 0
domid 0
physpath /dev/vg_lilith-raid/xen-win7-ctxs
phystype 4
virtpath hda
unpluggable 1
readwrite 1
is_cdrom 0



*** disks_info: 1 ***
backend_domid 0
domid 0
physpath /home/jeremy/commercial/ms/SW_DVD5_SA_Win_Ent_7_32BIT_English_Full_MLF_X15-70745.iso
phystype 5
virtpath hdc
unpluggable 1
readwrite 0
is_cdrom 1



*** vifs_info: 0 ***
backend_domid 0
domid 0
devid 0
mtu 1492
model e1000
mac 00:16:3e:23:f8:c2



*** device_model_info ***
domid: 0
dom_name: win7-ctxs
device_model: stubdom-dm
videoram: 8
stdvga: 0
vnc: 1
vnclisten: 0.0.0.0
vncdisplay: 0
vncunused: 1
keymap: (null)
sdl: 0
opengl: 0
nographic: 0
serial: pty
boot: cda
usb: 0
usbdevice: tablet
apic: 1
VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->0000000000171404
  TOTAL:         0000000000000000->000000003f800000
  ENTRY ADDRESS: 0000000000100000
PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000001fb
  1GB PAGES: 0x0000000000000000
[0] libxl_device.c:460:libxl_wait_for_device_model: Device Model for 14 not ready (want "running")
xl: fatal error: xl_cmdimpl.c:1040, rc=-1: libxl_confirm_device_model_startup(&ctx, dm_starting)

sh-4.0# xl list
Name                                        ID   Mem VCPUs	State	Time(s)
Dom0                                         0  2217     4        r--   2092.6
win7-ctxs                                   14  1019     1        -p-      0.0
win7-ctxs-dm                                15    32     1        ---      0.0

sh-4.0# xenstore-read /local/domain/0/device-model/14/state
xenstore-read: couldn't read path /local/domain/0/device-model/14/state
sh-4.0# xenstore-read /local/domain/0/device-model/15/state
running