Re: [Xen-devel] Need help with fixing the Xen waitqueue feature

[Keir Fraser <keir@xxxxxxx>]

On 22/11/2011 13:54, "Olaf Hering" <olaf@xxxxxxxxx> wrote:

> On Tue, Nov 22, Keir Fraser wrote:
> 
>> I think I checked before, but: also unresponsive to serial debug keys?
> 
> Good point, I will check that. So far I havent used these keys.

If they work then 'd' will give you a backtrace on every CPU, and 'q' will
dump domain and vcpu states. That should make things easier!

>> Forgot about it. Done now!
> 
> What about domain_crash() instead of BUG_ON() in __prepare_to_wait()?
> If the stacksize would be checked before its copied the hypervisor could
> survive.

Try the attached patch (please also try reducing the size of the new
parameter to the inline asm from PAGE_SIZE down to e.g. 2000 to force the
domain-crashing path).

 -- Keir

> Olaf

Attachment: 00-prep-to-wait-dom-crash
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