Messages in this thread | | | Date | Wed, 17 Aug 2011 17:28:46 -0700 | From | Avi Kivity <> | Subject | 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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