2015-10-07 11:29+0200, Paolo Bonzini:
> On 13/08/2015 15:46, Radim Krčmář wrote:
>> + if (kvm_x86_ops->sync_pir_to_irr(vcpu))
>> + kvm_make_request(KVM_REQ_EVENT, vcpu);
>> +
>
> The call to sync_pir_to_irr belongs more in vcpu_scan_ioapic, I think.
Will do so in v2.
> More importantly, I think that KVM_REQ_EVENT is a latent bug for
> kvm_vcpu_ioctl_get_lapic as well, so the call to kvm_make_request should
> go in vmx_sync_pir_to_irr or in a new kvm_sync_pir_to_irr wrapper.
True, thanks. I'll make the request in kvm_apic_update_irr (unless
you'd prefer to have it in new kvm_sync_pir_to_irr).
>> + (e->fields.trig_mode == IOAPIC_EDGE_TRIG &&
>> + kvm_apic_pending_eoi(vcpu, e->fields.vector)))
>
> Should we test again here that kvm_irq_has_notifier(ioapic->kvm,
> KVM_IRQCHIP_IOAPIC, index), to avoid unnecessarily marking other
> edge-triggered interrupts?
Other edge-triggered interrupts are skipped by a previous condition:
if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG ||
kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index) ||
index == RTC_GSI)
[we're here]
I think it is ok to ignore level-triggered RTC, but we do want to
include edge-triggered.
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