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


  • To: Olaf Hering <olaf@xxxxxxxxx>
  • From: Keir Fraser <keir.xen@xxxxxxxxx>
  • Date: Fri, 25 Nov 2011 19:35:01 +0000
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 25 Nov 2011 19:36:11 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcyrqVKRtjJmg2n7k0+EwQNmxnkanQ==
  • Thread-topic: [Xen-devel] Need help with fixing the Xen waitqueue feature

On 25/11/2011 18:26, "Olaf Hering" <olaf@xxxxxxxxx> wrote:

> 
> One more thing:
> 
> Is the BUG_ON in destroy_waitqueue_vcpu really required? If the vcpu
> happens to be in a queue by the time xl destroy is called the hypervisor
> will crash.

We could fix this by having waitqueues that contain a vcpu hold a reference
to that vcpu's domain.

> Perhaps there should be some sort of domain destructor for each
> waitqueue?

Not sure what you mean.

 -- Keir

> Olaf



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