Messages in this thread | | | Date | Mon, 02 Feb 2015 17:14:04 +0100 | From | Paolo Bonzini <> | Subject | Re: [PATCH v4 6/6] KVM: nVMX: Enable nested posted interrupt processing |
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On 02/02/2015 16:33, Wincy Van wrote: > static void vmx_accomp_nested_posted_intr(struct kvm_vcpu *vcpu) > { > struct vcpu_vmx *vmx = to_vmx(vcpu); > > if (is_guest_mode(vcpu) && > vmx->nested.posted_intr_nv != -1 && > pi_test_on(vmx->nested.pi_desc)) > kvm_apic_set_irr(vcpu, > vmx->nested.posted_intr_nv); > } > > Then we will get an nested-vmexit in vmx_check_nested_events, that > posted intr will be handled by L1 immediately. > This mechanism will also emulate the hardware's behavior: If a posted > intr was not accomplished by hardware, we will get an interrupt with > POSTED_INTR_NV.
Yes.
> Would this be better?
I think you do not even need a new bit. You can use KVM_REQ_EVENT and (to complete my suggestion, which was not enough) do the above in vmx_check_nested_events.
Paolo
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