-region_add(struct llist_header* lead, ptr_t start, ptr_t end, u32_t attr);
+region_create(ptr_t start, ptr_t end, u32_t attr);
+
+struct mm_region*
+region_create_range(ptr_t start, size_t length, u32_t attr);
+
+void
+region_add(vm_regions_t* lead, struct mm_region* vmregion);