Re: [Xen-devel] vcpu_pause

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Synchronous vcpu_pause() and domain_pause() are only used on paths
executable in dom0 context. Hence there is no loop in the graph of
domain-X-can-pause-domain-Y, and we'll need to maintain that asymmetry when
we disaggregate dom0. For now, a BUG_ON(current->domain != dom0) in
vcpu_sleep_sync() would probably make things clearer.

 -- Keir

On 2/3/07 23:26, "Ky Srinivasan" <ksrinivasan@xxxxxxxxxx> wrote:

> What are the expected entry conditions to call vcpu_pause. How do we guarantee
> two vcpus don't deadlock by calling pause on each other.
> 
> Regards,
> 
> K. Y
> 
> 
> 
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