386 	void *vaddr;  in persistent_ram_vmap()  local
404 	vaddr = vmap(pages, page_count, VM_MAP, prot);  in persistent_ram_vmap()
407 	return vaddr;  in persistent_ram_vmap()
428 		prz->vaddr = persistent_ram_vmap(start, size);  in persistent_ram_buffer_map()
430 		prz->vaddr = persistent_ram_iomap(start, size);  in persistent_ram_buffer_map()
432 	if (!prz->vaddr) {  in persistent_ram_buffer_map()
438 	prz->buffer = prz->vaddr + offset_in_page(start);  in persistent_ram_buffer_map()
484 	if (prz->vaddr) {  in persistent_ram_free()
486 			vunmap(prz->vaddr);  in persistent_ram_free()
488 			iounmap(prz->vaddr);  in persistent_ram_free()
491 		prz->vaddr = NULL;  in persistent_ram_free()