Re: RCU treating guest mode just like it does user-mode execution

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On 08/17/2011 05:25 PM, Paul E. McKenney wrote:
>  >
>  Wouldn't scheduling-clock interrupt kick vcpu out of a guest mode much
>  earlier then 30 seconds?

The scheduling-clock interrupt would happen, but I do not know whether
or not it would kick the vcpu out of guest mode in such a way that
would result in RCU thinking that the CPU has passed through a quiescent
state.


The result can only be one of

  reenter guest (and rcu_virt_note_context_switch)
  schedule()
  exit to userspace

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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