diff --git a/include/hw/compat.h b/include/hw/compat.h
index 55b176507a..4c53d600c1 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -6,6 +6,10 @@
         .driver   = "pci-bridge",\
         .property = "shpc",\
         .value    = "off",\
+    },{\
+        .driver   = "intel-iommu",\
+        .property = "pt",\
+        .value    = "off",\
     },
 
 #define HW_COMPAT_2_8 \