On 11/15/2010 11:15 AM, Sheng Yang wrote:
We need to query the entry later.
+int kvm_get_irq_routing_entry(struct kvm *kvm, int gsi,
+ struct kvm_kernel_irq_routing_entry *entry)
+{
+ int count = 0;
+ struct kvm_kernel_irq_routing_entry *ei = NULL;
+ struct kvm_irq_routing_table *irq_rt;
+ struct hlist_node *n;
+
+ rcu_read_lock();
+ irq_rt = rcu_dereference(kvm->irq_routing);
+ if (gsi< irq_rt->nr_rt_entries)
+ hlist_for_each_entry(ei, n,&irq_rt->map[gsi], link)
+ count++;
+ if (count == 1)
+ *entry = *ei;
+ rcu_read_unlock();
+
+ return (count != 1);
+}
+
Not good form to rely on ei being valid after the loop.
I guess this is only useful for msi? Need to document it.
*entry may be stale after rcu_read_unlock(). Is this a problem?
--
error compiling committee.c: too many arguments to function
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