ioapic: support "info irq"

This include both userspace and in-kernel ioapic.  Note that the numbers
can be inaccurate for kvm-ioapic.  One reason is the same with
kvm-i8259, that when irqfd is used, irqs can be delivered all inside
kernel without our notice.  Meanwhile, kvm-ioapic is specially treated
when irq numbers <ISA_NUM_IRQS, those irqs will be delivered in kernel
too via kvm-i8259 (please refer to kvm_pc_gsi_handler).

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20171229073104.3810-5-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c
index c45f073..222f3f7 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -148,6 +148,7 @@ static void ioapic_set_irq(void *opaque, int vector, int level)
      * the cleanest way of doing it but it should work. */
 
     trace_ioapic_set_irq(vector, level);
+    ioapic_stat_update_irq(s, vector, level);
     if (vector == 0) {
         vector = 2;
     }