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

[Arik Raffael Funke <arik@xxxxxxxx>]

Hi,

I suppose only the "irq=poll" kernel argument is the one that matters, 
right? I tried it, both in my dom0 and domU, but when I unload my misdn 
drivers in the domU everything still locks up.
You have the irq=poll apparently for the dom0. Where are you loading the 
mISDN drivers, also in dom0. If I load/unload the drivers in dom0, I 
have no problem what-so-ever. Only if I unload the drivers in a domU, 
the whole system freezes.
Cheers,
Arik


Stephan Seitz wrote:
> 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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