From aa429318279b90192f35a97e9ccdc1e83b3a9624 Mon Sep 17 00:00:00 2001
From: Alex Williamson <alex.williamson@redhat.com>
Date: Wed, 26 Feb 2014 11:38:37 -0700
Subject: [PATCH] vfio/type1: Add extension to test DMA cache coherence of
 IOMMU

Now that the type1 IOMMU backend can support IOMMU_CACHE, we need to
be able to test whether coherency is currently enforced.  Add an
extension for this.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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