virtio-iommu: Implement set_iova_ranges() callback

The implementation populates the array of per IOMMUDevice
host reserved ranges.

It is forbidden to have conflicting sets of host IOVA ranges
to be applied onto the same IOMMU MR (implied by different
host devices).

In case the callback is called after the probe request has
been issues by the driver, a warning is issued.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: "Michael S. Tsirkin" <mst@redhat.com>
Tested-by: Yanghang Liu <yanghliu@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-iommu.h
index 1dd11ae81a..781ebaea8f 100644
--- a/include/hw/virtio/virtio-iommu.h
+++ b/include/hw/virtio/virtio-iommu.h
@@ -40,6 +40,7 @@ typedef struct IOMMUDevice {
     MemoryRegion root;          /* The root container of the device */
     MemoryRegion bypass_mr;     /* The alias of shared memory MR */
     GList *resv_regions;
+    GList *host_resv_ranges;
     bool probe_done;
 } IOMMUDevice;