diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h
index 729849b..f6f6d0a 100644
--- a/lib/librte_vhost/rte_vdpa.h
+++ b/lib/librte_vhost/rte_vdpa.h
@@ -93,15 +93,21 @@ extern struct rte_vdpa_engine *vdpa_engines[];
 extern uint32_t vdpa_engine_num;
 
 /* engine management */
-int rte_vdpa_register_engine(const char *name, struct rte_vdpa_eng_addr *addr);
-int rte_vdpa_unregister_engine(int eid);
+int __rte_experimental
+rte_vdpa_register_engine(const char *name, struct rte_vdpa_eng_addr *addr);
 
-int rte_vdpa_find_engine_id(struct rte_vdpa_eng_addr *addr);
+int __rte_experimental
+rte_vdpa_unregister_engine(int eid);
 
-int rte_vdpa_info_query(int eid, struct rte_vdpa_eng_attr *attr);
+int __rte_experimental
+rte_vdpa_find_engine_id(struct rte_vdpa_eng_addr *addr);
+
+int __rte_experimental
+rte_vdpa_info_query(int eid, struct rte_vdpa_eng_attr *attr);
 
 /* driver register api */
-void rte_vdpa_register_driver(struct rte_vdpa_eng_driver *drv);
+void __rte_experimental
+rte_vdpa_register_driver(struct rte_vdpa_eng_driver *drv);
 
 #define RTE_VDPA_REGISTER_DRIVER(nm, drv) \
 RTE_INIT(vdpainitfn_ ##nm); \
diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
index 03f4ed1..dc38566 100644
--- a/lib/librte_vhost/rte_vhost.h
+++ b/lib/librte_vhost/rte_vhost.h
@@ -187,7 +187,8 @@ int rte_vhost_driver_unregister(const char *path);
  * @return
  *  0 on success, -1 on failure
  */
-int rte_vhost_driver_set_vdpa_eid(const char *path, int eid);
+int __rte_experimental
+rte_vhost_driver_set_vdpa_eid(const char *path, int eid);
 
 /**
  * Set the device id, enforce single connection per socket
@@ -199,7 +200,8 @@ int rte_vhost_driver_set_vdpa_eid(const char *path, int eid);
  * @return
  *  0 on success, -1 on failure
  */
-int rte_vhost_driver_set_vdpa_did(const char *path, int did);
+int __rte_experimental
+rte_vhost_driver_set_vdpa_did(const char *path, int did);
 
 /**
  * Get the engine id
@@ -209,7 +211,8 @@ int rte_vhost_driver_set_vdpa_did(const char *path, int did);
  * @return
  *  Engine id, -1 on failure
  */
-int rte_vhost_driver_get_vdpa_eid(const char *path);
+int __rte_experimental
+rte_vhost_driver_get_vdpa_eid(const char *path);
 
 /**
  * Get the device id
@@ -219,7 +222,8 @@ int rte_vhost_driver_get_vdpa_eid(const char *path);
  * @return
  *  Device id, -1 on failure
  */
-int rte_vhost_driver_get_vdpa_did(const char *path);
+int __rte_experimental
+rte_vhost_driver_get_vdpa_did(const char *path);
 
 /**
  * Set the feature bits the vhost-user driver supports.
@@ -243,7 +247,8 @@ int rte_vhost_driver_set_features(const char *path, uint64_t features);
  * @return
  *  0 on success, -1 on failure
  */
-int rte_vhost_driver_get_protocol_features(const char *path,
+int __rte_experimental
+rte_vhost_driver_get_protocol_features(const char *path,
 		uint64_t *protocol_features);
 
 /**
@@ -256,7 +261,8 @@ int rte_vhost_driver_get_protocol_features(const char *path,
  * @return
  *  0 on success, -1 on failure
  */
-int rte_vhost_driver_set_protocol_features(const char *path,
+int __rte_experimental
+rte_vhost_driver_set_protocol_features(const char *path,
 		uint64_t protocol_features);
 
 /**
@@ -269,7 +275,8 @@ int rte_vhost_driver_set_protocol_features(const char *path,
  * @return
  *  0 on success, -1 on failure
  */
-int rte_vhost_driver_get_queue_num(const char *path, uint16_t *queue_num);
+int __rte_experimental
+rte_vhost_driver_get_queue_num(const char *path, uint16_t *queue_num);
 
 /**
  * Set the queue number the vhost-user driver supports.
@@ -281,7 +288,8 @@ int rte_vhost_driver_get_queue_num(const char *path, uint16_t *queue_num);
  * @return
  *  0 on success, -1 on failure
  */
-int rte_vhost_driver_set_queue_num(const char *path, uint16_t queue_num);
+int __rte_experimental
+rte_vhost_driver_set_queue_num(const char *path, uint16_t queue_num);
 
 /**
  * Enable vhost-user driver features.
@@ -546,7 +554,8 @@ uint32_t rte_vhost_rx_queue_count(int vid, uint16_t qid);
  * @return
  *  engine id
  */
-int rte_vhost_get_vdpa_eid(int vid);
+int __rte_experimental
+rte_vhost_get_vdpa_eid(int vid);
 
 /**
  * Get vdpa device id for vhost device.
@@ -558,7 +567,8 @@ int rte_vhost_get_vdpa_eid(int vid);
  * @return
  *  device id
  */
-int rte_vhost_get_vdpa_did(int vid);
+int __rte_experimental
+rte_vhost_get_vdpa_did(int vid);
 
 #ifdef __cplusplus
 }
diff --git a/lib/librte_vhost/rte_vhost_version.map b/lib/librte_vhost/rte_vhost_version.map
index df01031..de585df 100644
--- a/lib/librte_vhost/rte_vhost_version.map
+++ b/lib/librte_vhost/rte_vhost_version.map
@@ -59,3 +59,21 @@ DPDK_18.02 {
 	rte_vhost_vring_call;
 
 } DPDK_17.08;
+
+EXPERIMENTAL {
+	rte_vhost_driver_set_vdpa_eid;
+	rte_vhost_driver_set_vdpa_did;
+	rte_vhost_driver_get_vdpa_eid;
+	rte_vhost_driver_get_vdpa_did;
+	rte_vhost_driver_get_protocol_features;
+	rte_vhost_driver_set_protocol_features;
+	rte_vhost_driver_get_queue_num;
+	rte_vhost_driver_set_queue_num;
+	rte_vhost_get_vdpa_eid;
+	rte_vhost_get_vdpa_did;
+	rte_vdpa_register_engine;
+	rte_vdpa_unregister_engine;
+	rte_vdpa_find_engine_id;
+	rte_vdpa_info_query;
+	rte_vdpa_register_driver;
+} DPDK_18.02;
