Re: [PATCH 12/16] KVM: TDX: Inhibit APICv for TDX guest

[Huang, Kai]

On Fri, 2025-01-17 at 09:53 +0000, Huang, Kai wrote:
> Btw, IIUC, in case of IRQCHIP split, KVM uses KVM_IRQ_ROUTING_MSI for routes of
> GSIs.  But it seems KVM only allows level-triggered MSI to be signaled (which is
> a surprising):
> 
> int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
>                 struct kvm *kvm, int irq_source_id, int level, bool line_status)
> {
>         struct kvm_lapic_irq irq;
> 
>         if (kvm_msi_route_invalid(kvm, e))
>                 return -EINVAL;
> 
>         if (!level)
>                 return -1;
> 
>         kvm_set_msi_irq(kvm, e, &irq);
> 
>         return kvm_irq_delivery_to_apic(kvm, NULL, &irq, NULL);
> }

Ah sorry this 'level' is not trig_mode.  Please ignore :-)