On Mon, Aug 13, 2012 at 12:32:44PM +0300, Avi Kivity wrote:
> On 08/13/2012 12:16 PM, Gleb Natapov wrote:
> > Signed-off-by: Gleb Natapov <[email protected]>
> >
> > -int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> > +int kvm_irq_delivery_to_apic(struct kvm_kernel_irq_routing_entry *e,
> > + struct kvm *kvm, struct kvm_lapic *src,
> > struct kvm_lapic_irq *irq)
>
> Would be nicer to put e at the end, and explain that it is optional.
>
Just a prototype to see how it goes :)
> > {
> > - int i, r = -1;
> > - struct kvm_vcpu *vcpu, *lowest = NULL;
> > + int i, r = -1, c = 0;
> > + struct kvm_vcpu *vcpu, *cache = NULL, *lowest = NULL;
> >
> > if (irq->dest_mode == 0 && irq->dest_id == 0xff &&
> > kvm_is_dm_lowest_prio(irq))
> > @@ -82,6 +83,8 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct
> > kvm_lapic *src,
> > if (!kvm_is_dm_lowest_prio(irq)) {
> > if (r < 0)
> > r = 0;
> > + c++;
> > + cache = vcpu;
> > r += kvm_apic_set_irq(vcpu, irq);
> > } else if (kvm_lapic_enabled(vcpu)) {
> > if (!lowest)
> > @@ -93,6 +96,8 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct
> > kvm_lapic *src,
> >
> > if (lowest)
> > r = kvm_apic_set_irq(lowest, irq);
> > + else if (e && c == 1)
> > + e->vcpu = cache; /* cache it */
> >
> > return r;
> > }
> > @@ -118,7 +123,9 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
> > irq.shorthand = 0;
> >
> > /* TODO Deal with RH bit of MSI message address */
> > - return kvm_irq_delivery_to_apic(kvm, NULL, &irq);
> > + if (e->vcpu)
> > + return kvm_apic_set_irq(e->vcpu, &irq);
> > + return kvm_irq_delivery_to_apic(e, kvm, NULL, &irq);
> > }
> >
> > int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi)
> > @@ -131,6 +138,7 @@ int kvm_send_userspace_msi(struct kvm *kvm, struct
> > kvm_msi *msi)
> > route.msi.address_lo = msi->address_lo;
> > route.msi.address_hi = msi->address_hi;
> > route.msi.data = msi->data;
> > + route.vcpu = NULL;
> >
> > return kvm_set_msi(&route, kvm, KVM_USERSPACE_IRQ_SOURCE_ID, 1);
> > }
> >
>
> Missing cache invalidate on apicid write?
>
Yes. Need to call to kvm_set_irq_routing() in strategic places. Same for
ioapic.
> Otherwise nice and simple.
>
>
> --
> error compiling committee.c: too many arguments to function
--
Gleb.
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