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

"Zhang, Yang" <[email protected]>
Newsgroups org.kernel.vger.kvm-ia64,org.kernel.vger.kvm
Message-ID <10C63FAD690C13458F0B32BCED571F140E29AF98@pdsmsx502.ccr.corp.intel.com> 
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.
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