diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 796de91bf3..9e8350c55d 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2537,7 +2537,7 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker)
                              (1UL << 7),  /* PPRSup       */
                              1);
     /* IVHD length */
-    build_append_int_noprefix(table_data, 0x24, 2);
+    build_append_int_noprefix(table_data, 28, 2);
     /* DeviceID */
     build_append_int_noprefix(table_data, s->devid, 2);
     /* Capability offset */
diff --git a/hw/i386/amd_iommu.h b/hw/i386/amd_iommu.h
index aeef802364..874030582d 100644
--- a/hw/i386/amd_iommu.h
+++ b/hw/i386/amd_iommu.h
@@ -165,8 +165,8 @@
 #define AMDVI_DTE_UPPER_QUAD_RESERVED  0x08f0000000000000
 
 /* AMDVI paging mode */
-#define AMDVI_GATS_MODE                 (6ULL <<  12)
-#define AMDVI_HATS_MODE                 (6ULL <<  10)
+#define AMDVI_GATS_MODE                 (2ULL <<  12)
+#define AMDVI_HATS_MODE                 (2ULL <<  10)
 
 /* IOTLB */
 #define AMDVI_IOTLB_MAX_SIZE 1024
diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c
index 289bbcac03..855f1b41d1 100644
--- a/hw/virtio/virtio-rng.c
+++ b/hw/virtio/virtio-rng.c
@@ -156,6 +156,19 @@ static void check_rate_limit(void *opaque)
     vrng->activate_timer = true;
 }
 
+static void virtio_rng_set_status(VirtIODevice *vdev, uint8_t status)
+{
+    VirtIORNG *vrng = VIRTIO_RNG(vdev);
+
+    if (!vdev->vm_running) {
+        return;
+    }
+    vdev->status = status;
+
+    /* Something changed, try to process buffers */
+    virtio_rng_process(vrng);
+}
+
 static void virtio_rng_device_realize(DeviceState *dev, Error **errp)
 {
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
@@ -261,6 +274,7 @@ static void virtio_rng_class_init(ObjectClass *klass, void *data)
     vdc->realize = virtio_rng_device_realize;
     vdc->unrealize = virtio_rng_device_unrealize;
     vdc->get_features = get_features;
+    vdc->set_status = virtio_rng_set_status;
 }
 
 static const TypeInfo virtio_rng_info = {