+__rte_experimental struct rte_memseg_list *
+rte_mem_virt2memseg_list(const void *virt);
+
+/**
+ * Memseg walk function prototype.
+ *
+ * Returning 0 will continue walk
+ * Returning 1 will stop the walk
+ * Returning -1 will stop the walk and report error
+ */
+typedef int (*rte_memseg_walk_t)(const struct rte_memseg_list *msl,
+ const struct rte_memseg *ms, void *arg);
+
+/**
+ * Memseg contig walk function prototype. This will trigger a callback on every
+ * VA-contiguous are starting at memseg ``ms``, so total valid VA space at each
+ * callback call will be [``ms->addr``, ``ms->addr + len``).
+ *
+ * Returning 0 will continue walk
+ * Returning 1 will stop the walk
+ * Returning -1 will stop the walk and report error
+ */
+typedef int (*rte_memseg_contig_walk_t)(const struct rte_memseg_list *msl,
+ const struct rte_memseg *ms, size_t len, void *arg);
+
+/**
+ * Memseg list walk function prototype. This will trigger a callback on every
+ * allocated memseg list.
+ *
+ * Returning 0 will continue walk
+ * Returning 1 will stop the walk
+ * Returning -1 will stop the walk and report error
+ */
+typedef int (*rte_memseg_list_walk_t)(const struct rte_memseg_list *msl,
+ void *arg);
+
+/**
+ * Walk list of all memsegs.
+ *
+ * @note This function read-locks the memory hotplug subsystem, and thus cannot
+ * be used within memory-related callback functions.
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ * @return
+ * 0 if walked over the entire list
+ * 1 if stopped by the user
+ * -1 if user function reported error
+ */
+int __rte_experimental
+rte_memseg_walk(rte_memseg_walk_t func, void *arg);
+
+/**
+ * Walk each VA-contiguous area.
+ *
+ * @note This function read-locks the memory hotplug subsystem, and thus cannot
+ * be used within memory-related callback functions.
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ * @return
+ * 0 if walked over the entire list
+ * 1 if stopped by the user
+ * -1 if user function reported error
+ */
+int __rte_experimental
+rte_memseg_contig_walk(rte_memseg_contig_walk_t func, void *arg);
+
+/**
+ * Walk each allocated memseg list.
+ *
+ * @note This function read-locks the memory hotplug subsystem, and thus cannot
+ * be used within memory-related callback functions.
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ * @return
+ * 0 if walked over the entire list
+ * 1 if stopped by the user
+ * -1 if user function reported error
+ */
+int __rte_experimental
+rte_memseg_list_walk(rte_memseg_list_walk_t func, void *arg);
+
+/**
+ * Walk list of all memsegs without performing any locking.
+ *
+ * @note This function does not perform any locking, and is only safe to call
+ * from within memory-related callback functions.
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ * @return
+ * 0 if walked over the entire list
+ * 1 if stopped by the user
+ * -1 if user function reported error
+ */
+int __rte_experimental
+rte_memseg_walk_thread_unsafe(rte_memseg_walk_t func, void *arg);
+
+/**
+ * Walk each VA-contiguous area without performing any locking.
+ *
+ * @note This function does not perform any locking, and is only safe to call
+ * from within memory-related callback functions.
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ * @return
+ * 0 if walked over the entire list
+ * 1 if stopped by the user
+ * -1 if user function reported error
+ */
+int __rte_experimental
+rte_memseg_contig_walk_thread_unsafe(rte_memseg_contig_walk_t func, void *arg);
+
+/**
+ * Walk each allocated memseg list without performing any locking.
+ *
+ * @note This function does not perform any locking, and is only safe to call
+ * from within memory-related callback functions.
+ *
+ * @param func
+ * Iterator function
+ * @param arg
+ * Argument passed to iterator
+ * @return
+ * 0 if walked over the entire list
+ * 1 if stopped by the user
+ * -1 if user function reported error
+ */
+int __rte_experimental
+rte_memseg_list_walk_thread_unsafe(rte_memseg_list_walk_t func, void *arg);
+
+/**
+ * Dump the physical memory layout to a file.
+ *
+ * @note This function read-locks the memory hotplug subsystem, and thus cannot
+ * be used within memory-related callback functions.
+ *
+ * @param f
+ * A pointer to a file for output
+ */
+void rte_dump_physmem_layout(FILE *f);