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[Qemu-devel] [PATCH v11 10/17] hw/arm/smmuv3: Abort on vfio or vhost cas


From: Eric Auger
Subject: [Qemu-devel] [PATCH v11 10/17] hw/arm/smmuv3: Abort on vfio or vhost case
Date: Thu, 12 Apr 2018 09:38:01 +0200

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 <address@hidden>
---
 hw/arm/smmuv3.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index 4be676b..6e0d7ad 100644
--- 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 = {
-- 
2.5.5




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