From patchwork Tue Oct 30 11:47:49 2012
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Subject: [v2,6/7] vfio: abort if an emulated iommu is used
Date: Tue, 30 Oct 2012 01:47:49 -0000
From: Avi Kivity <avi@redhat.com>
X-Patchwork-Id: 195461
Message-Id: <1351597670-23031-7-git-send-email-avi@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Michael S. Tsirkin" <mst@redhat.com>, Alexander Graf <agraf@suse.de>,
 Blue Swirl <blauwirbel@gmail.com>,
 Alex Williamson <alex.williamson@redhat.com>,
 Anthony Liguori <anthony@codemonkey.ws>

vfio doesn't support guest iommus yet, indicate it to the user
by gently depositing a core on their disk.

Signed-off-by: Avi Kivity <avi@redhat.com>

---
hw/vfio_pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/vfio_pci.c b/hw/vfio_pci.c
index 0473ae8..bd7a075 100644
--- a/hw/vfio_pci.c
+++ b/hw/vfio_pci.c
@@ -943,6 +943,8 @@ static void vfio_listener_region_add(MemoryListener *listener,
     void *vaddr;
     int ret;
 
+    assert(!memory_region_is_iommu(section->mr));
+
     if (vfio_listener_skipped_section(section)) {
         DPRINTF("vfio: SKIPPING region_add %"HWADDR_PRIx" - %"PRIx64"\n",
                 section->offset_within_address_space,