From 85dfe87e24326c472454cc92313ba8c3b4efe53b Mon Sep 17 00:00:00 2001
From: Cornelia Huck <cornelia.huck@de.ibm.com>
Date: Wed, 3 Jul 2013 16:30:54 +0200
Subject: [PATCH] KVM: s390: use cookies for ioeventfd

Make use of cookies for the virtio ccw notification hypercall to speed up
lookup of devices on the io bus.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
[Small fix to a comment. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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