[Xen-devel] domain_pause and vcpu_pause on currently executing domain?

[George Washington Dunlap III <dunlapg@xxxxxxxxx>]

I just discovered the domain_pause() and vcpu_pause() functionality, and i 
was wondering why the functions call BUG if the target domain/vcpu is 
currently executing.  It seems like being able to say, "Pause the 
currently running domain as soon as this hypervisor event is done" would 
be a useful one; all that would be required is having domain_sleep_sync() 
raise the schedule softirq if it's the currently executing one.
Was there a particular reason this was implemented this way?  Or was the 
use I described not envisioned?
 -George

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