Messages in this thread | | | Date | Thu, 17 Jul 2014 12:43:17 +0200 | From | Paolo Bonzini <> | Subject | Re: [PATCH 2/3] KVM: nVMX: Fix fail to get nested ack intr's vector during nested vmexit |
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Il 17/07/2014 12:01, Wanpeng Li ha scritto: > That is my original proposal solution of this bug. However, what I concern > after more think is since kvm_lapic_find_highest_irr will not clear > irr, if the intr will be injected by kvm_86_ops->hwapic_irr_update(vcpu, > kvm_lapic_find_highest_irr(vcpu)) which called by vcpu_enter_guest() again? > > Any idea, Paolo?
The processor should do that when it does the virtual interrupt delivery. It will do (29.2.2):
Vector := RVI; VISR[Vector] := 1; SVI := Vector; VIRR[Vector] := 0; If VIRR not empty then RVI := highest index of bit set in VIRR else RVI := 0 Fi; deliver interrupt with Vector through IDT;
Please post a patch, so we can reason on it better.
Paolo
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