Re: [PATCH 1/8 v2] Change irq routing table to use gsi indexed array.

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On 08/12/2009 11:41 AM, Gleb Natapov wrote:
On Wed, Aug 12, 2009 at 11:05:06AM +0300, Avi Kivity wrote:
On 08/11/2009 03:31 PM, Gleb Natapov wrote:
Use gsi indexed array instead of scanning all entries on each interrupt
injection.


@@ -163,20 +166,23 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level)

   void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
   {
-	struct kvm_kernel_irq_routing_entry *e;
   	struct kvm_irq_ack_notifier *kian;
   	struct hlist_node *n;
   	unsigned gsi = pin;
+	int i;

   	trace_kvm_ack_irq(irqchip, pin);

-	list_for_each_entry(e,&kvm->irq_routing, link)
+	for (i = 0; i<   kvm->irq_routing->nr_rt_entries; i++) {
+		struct kvm_kernel_irq_routing_entry *e;
+		e =&kvm->irq_routing->rt_entries[i];
   		if (e->type == KVM_IRQ_ROUTING_IRQCHIP&&
   		e->irqchip.irqchip == irqchip&&
   		e->irqchip.pin == pin) {
   			gsi = e->gsi;
   			break;
   		}
+	}

Don't you need to iterate over all the entries for a gsi?

One pin/irqchip cannot be mapped to more than one GSI.

But one gsi can be mapped to multiple irqchip/pin combinations.

Besides
this is what the current code does.

The current code stops on first match; the new code doesn't consider some entries at all.

--
error compiling committee.c: too many arguments to function

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