Re: [PATCH v2 5/6] KVM: SVM: Inject MCEs when restricted injection is active

[Lai Jiangshan]

Hello

On Tue, Sep 10, 2024 at 2:06 PM Melody Wang <huibo.wang@xxxxxxx> wrote:

> @@ -5153,7 +5160,7 @@ void sev_snp_cancel_injection(struct kvm_vcpu *vcpu)
>
>         /*
>          * KVM only injects a single event each time (prepare_hv_injection),
> -        * so when events.nmi is true, the vector will be zero
> +        * so when events.nmi is true, the mce and vector will be zero
>          */

This comment seems ambiguous, and in the following code,
events.nmi/mce/vector appears to be able to be true simultaneously,
rather than being mutually exclusive.


>         if (hvdb->events.vector)
>                 svm->vmcb->control.event_inj |= hvdb->events.vector |
> @@ -5162,6 +5169,9 @@ void sev_snp_cancel_injection(struct kvm_vcpu *vcpu)
>         if (hvdb->events.nmi)
>                 svm->vmcb->control.event_inj |= SVM_EVTINJ_TYPE_NMI;
>
> +       if (hvdb->events.mce)
> +               svm->vmcb->control.event_inj |= MC_VECTOR | SVM_EVTINJ_TYPE_EXEPT;