diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h b/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h
index 44cc9575c..9c63a20c4 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h
@@ -50,6 +50,7 @@ struct MemSpace {
     TraceTag tag;
     /* task memory resources */
     struct TopLevelPageDirectory pgdir; // [phy] vm pgtbl base address
+    struct TopLevelPageDirectory pgdir_riscv; // [phy] vm pgtbl base address
     uintptr_t heap_base; // mem size of proc used(allocated by kernel)
     uintptr_t mem_size;
     /* task communication mem resources */