[...]
>>> +
>>> +static bool vgic_update_irq_state(struct kvm *kvm, int cpuid,
>>> + unsigned int irq_num, bool level)
>>> +{
>>> + struct vgic_dist *dist = &kvm->arch.vgic;
>>> + struct kvm_vcpu *vcpu;
>>> + int is_edge, is_level, state;
>>> + int enabled;
>>> + bool ret = true;
>>> +
>>> + spin_lock(&dist->lock);
>>> +
>>> + is_edge = vgic_irq_is_edge(dist, irq_num);
>>> + is_level = !is_edge;
>>> + state = vgic_bitmap_get_irq_val(&dist->irq_state, cpuid, irq_num);
>>> +
>>> + /*
>>> + * Only inject an interrupt if:
>>> + * - level triggered and we change level
>>> + * - edge triggered and we have a rising edge
>>> + */
>>> + if ((is_level && !(state ^ level)) || (is_edge && (state || !level))) {
>>> + ret = false;
>>> + goto out;
>>> + }
>>
>> Eek, more of the edge/level combo. Can this be be restructured so that we
>> have vgic_update_{edge,level}_irq_state, which are called from here
>> appropriately?
>
> I'll have a look.
>
oh, you're no fun anymore. That if statement is one of the funniest
pieces of this code.
-Christoffer
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