Re: [Xen-users] Crashing dom0 by unloading mISDN

[Stephan Seitz <s.seitz@xxxxxxxxxxxx>]

Hi,

i recently had the same issues with ISDN pci devices.
running Xen 3.1 with Ubuntu Feisty as Dom0 and Ubuntu Dapper as domU

My current setup now works without problems after I changed the boot
entry in /boot/grub/menu.lst to

title           Xen 3.1-i386-pae / Ubuntu, kernel 2.6.20-100-server
root            (hd0,1)
kernel          /xen-3.1-i386-pae.gz
module          /vmlinuz-2.6.20-100-server 
root=UUID=09503299-c560-45de-b69d-8d98eadc7b23 ro console=tty0 irq=poll
pciback.hide=(03:01.0)
module          /initrd.img-2.6.20-100-server
quiet
savedefault


without the irq=poll option, the system showed unpredictable failures
after unloading the ISDN driver and/or shutting down the domU.

this particular domU runs kernel 2.6.19-4-server (ubuntu repo)


Arik Raffael Funke schrieb:
> Hi,
> 
> I have a Fedora 7 xen system with a domU to which I have delegated via
> pciback two isdn pci cards. One is a HFC-S card, the other a AVM
> Fritz!Card Pci 2.0.
> 
> In the domU I load mISDN drivers for the cards. The two cards are
> recognized and function well UNTIL I either decide to unload one or both
> of the card driver modules (hfcpci and avmfritz) or I decide to shut
> down the domU. At this point the WHOLE system locks up: the mouse in
> Gnome reacts as if in slow-motion, typing in a already open terminal
> window does still work if characters are entered deliberately slowly one
> by one. However, commands are no longer executed.
> 
> Occasionally, not always however, a message is output along the lines of:
> 
> irq 22: nobody cared (try booting with the "irqpoll" option)
>

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