KVM_EXIT_HALT and KVM_CREATE_IRQCHIP

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Hi!

How is the guest supposed to halt the hypervisor if KVM_CREATE_IRQCHIP is being used? The kvm_emulate_halt() function seems to handle the halt event completely if irqchip_in_kernel() returns true and thus never exits to the hypervisor.

I see there's a KVM_GET_MP_STATE ioctl that can be used to check if state is KVM_MP_STATE_HALTED but as we never exit to the hypervisor, how is this supposed to work? Am I missing something obvious here?

			Pekka
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