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[PULL,20/24] hw/arm/smmuv3: Abort on vfio or vhost case

Message ID 20180504171540.25813-21-peter.maydell@linaro.org
State New
Headers show
Series [PULL,01/24] hw/arm/virt: Add linux, pci-domain property | expand

Commit Message

Peter Maydell May 4, 2018, 5:15 p.m. UTC 
From: Eric Auger <eric.auger@redhat.com>

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>
---
 hw/arm/smmuv3.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
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Patch

diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index d896834764..b3026dea20 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 = {