hw/arm/smmuv3: Abort on vfio or vhost case

At the moment, the SMMUv3 does not support notification on
TLB invalidation. So let's log an error as soon as such notifier
gets enabled.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1524665762-31355-11-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index d8968347646589cb8879bc6d54953169f7253581..b3026dea20240b35b52d085a90649f3379f0821d 100644 (file)
--- a/hw/arm/smmuv3.c
+++ b/hw/arm/smmuv3.c
@@ -1147,12 +1147,23 @@ static void smmuv3_class_init(ObjectClass *klass, void *data)
     dc->realize = smmu_realize;
 }
 
+static void smmuv3_notify_flag_changed(IOMMUMemoryRegion *iommu,
+                                       IOMMUNotifierFlag old,
+                                       IOMMUNotifierFlag new)
+{
+    if (old == IOMMU_NOTIFIER_NONE) {
+        warn_report("SMMUV3 does not support vhost/vfio integration yet: "
+                    "devices of those types will not function properly");
+    }
+}
+
 static void smmuv3_iommu_memory_region_class_init(ObjectClass *klass,
                                                   void *data)
 {
     IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
 
     imrc->translate = smmuv3_translate;
+    imrc->notify_flag_changed = smmuv3_notify_flag_changed;
 }
 
 static const TypeInfo smmuv3_type_info = {