Re: [Xen-devel] Re: how to handle paged hypercall args?

[Keir Fraser <keir@xxxxxxx>]

On 07/12/2010 09:25, "Olaf Hering" <olaf@xxxxxxxxx> wrote:

> On Thu, Dec 02, Keir Fraser wrote:
> 
>> Since your current patch is conceptually quite broken anyway, there is
>> little point in chasing down the crash. It might have something to do with
>> allocating the waitqueue_head on the local stack -- which you would never
>> want to do in a correct usage of waitqueues. So, back to square one and try
>> again I'm afraid.
> 
> Keir,
> 
> yesterday I sent out my patch queue for xen-unstable. I think the
> approach to wait the active vcpu in p2m_mem_paging_populate() and wakeup
> the vcpu in p2m_mem_paging_resume() could work.
> However, something causes what looks like stack corruption.
> 
> Any idea whats going on?

No, I did some unit testing of the waitqueue stuff and it worked for me.
Perhaps you can suggest some reproduction steps.

 K.

> Olaf
> 



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