Re: [PATCH] KVM: IA64: enable external interrupt in vmm

Zhang, Yang wrote:
> Avi Kivity wrote:
>   
>> I'm surprised it doesn't work this way already.  What happens now if
>> the guest disables interrupts and spins?
>>     
> when vmm disables interrupt, all the external interrupts are pending 
> until return back to the guest. and this will degrade the i/o performance.

Oh I misunderstood.  When the guest us running interrupts are enabled, 
this was true before.  The change enables interrupts in the monitor, so 
it improves responsiveness.

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