From c61fa9d63b40b06522c5f1d940b084323a090688 Mon Sep 17 00:00:00 2001
From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Sun, 11 Sep 2011 10:16:20 +0200
Subject: [PATCH] KVM: Avoid needless registrations of IRQ ack notifier for
 assigned devices

We only perform work in kvm_assigned_dev_ack_irq if the guest IRQ is of
INTx type. This completely avoids the callback invocation in non-INTx
cases by registering the IRQ ack notifier only for INTx.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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