5 files changed, 14 insertions, 10 deletions
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 01d2101d09..8f2fb9f10b 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -371,8 +371,8 @@ static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev)
     return 0;
 }
 
-int vhost_vdpa_get_device_id(struct vhost_dev *dev,
-                                   uint32_t *device_id)
+static int vhost_vdpa_get_device_id(struct vhost_dev *dev,
+                                    uint32_t *device_id)
 {
     int ret;
     ret = vhost_vdpa_call(dev, VHOST_VDPA_GET_DEVICE_ID, device_id);
diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index d120bf8f43..4b5d9e5e50 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -663,9 +663,6 @@ virtio_balloon_free_page_hint_notify(NotifierWithReturn *n, void *data)
     }
 
     switch (pnd->reason) {
-    case PRECOPY_NOTIFY_SETUP:
-        precopy_enable_free_page_optimization();
-        break;
     case PRECOPY_NOTIFY_BEFORE_BITMAP_SYNC:
         virtio_balloon_free_page_stop(dev);
         break;
@@ -685,6 +682,7 @@ virtio_balloon_free_page_hint_notify(NotifierWithReturn *n, void *data)
          */
         virtio_balloon_free_page_done(dev);
         break;
+    case PRECOPY_NOTIFY_SETUP:
     case PRECOPY_NOTIFY_COMPLETE:
         break;
     default:
diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c
index 655824ff81..75aa7d6f1b 100644
--- a/hw/virtio/virtio-mem.c
+++ b/hw/virtio/virtio-mem.c
@@ -902,9 +902,6 @@ static int virtio_mem_precopy_notify(NotifierWithReturn *n, void *data)
     PrecopyNotifyData *pnd = data;
 
     switch (pnd->reason) {
-    case PRECOPY_NOTIFY_SETUP:
-        precopy_enable_free_page_optimization();
-        break;
     case PRECOPY_NOTIFY_AFTER_BITMAP_SYNC:
         virtio_mem_precopy_exclude_unplugged(vmem);
         break;
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 342c918ea7..5952471b38 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -36,7 +36,9 @@
 
 static bool virtio_mmio_ioeventfd_enabled(DeviceState *d)
 {
-    return kvm_eventfds_enabled();
+    VirtIOMMIOProxy *proxy = VIRTIO_MMIO(d);
+
+    return (proxy->flags & VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD) != 0;
 }
 
 static int virtio_mmio_ioeventfd_assign(DeviceState *d,
@@ -720,6 +722,8 @@ static Property virtio_mmio_properties[] = {
     DEFINE_PROP_BOOL("format_transport_address", VirtIOMMIOProxy,
                      format_transport_address, true),
     DEFINE_PROP_BOOL("force-legacy", VirtIOMMIOProxy, legacy, true),
+    DEFINE_PROP_BIT("ioeventfd", VirtIOMMIOProxy, flags,
+                    VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT, true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -731,6 +735,11 @@ static void virtio_mmio_realizefn(DeviceState *d, Error **errp)
     qbus_create_inplace(&proxy->bus, sizeof(proxy->bus), TYPE_VIRTIO_MMIO_BUS,
                         d, NULL);
     sysbus_init_irq(sbd, &proxy->irq);
+
+    if (!kvm_eventfds_enabled()) {
+        proxy->flags &= ~VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD;
+    }
+
     if (proxy->legacy) {
         memory_region_init_io(&proxy->iomem, OBJECT(d),
                               &virtio_legacy_mem_ops, proxy,
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 9e13cb9e3a..e02544b2df 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2981,7 +2981,7 @@ int virtio_set_features(VirtIODevice *vdev, uint64_t val)
     return ret;
 }
 
-size_t virtio_feature_get_config_size(VirtIOFeature *feature_sizes,
+size_t virtio_feature_get_config_size(const VirtIOFeature *feature_sizes,
                                       uint64_t host_features)
 {
     size_t config_size = 0;