diff --git a/sandbox/base/memory_test.c b/sandbox/base/memory_test.c
index f152829..e5812fe 100644
--- a/sandbox/base/memory_test.c
+++ b/sandbox/base/memory_test.c
@@ -41,6 +41,8 @@ static struct mem_map_region mem_map[] = {
 	{ .base = 0x00800000, .limit = MB_TO_BYTES(MEMORY_SIZE_MB) - 1, .status = REGION_FREE },
 };
 
+extern void tmp_set_vaddr_base(void *);
+
 /* virtual address of where system memory is mapped */
 static void *system_memory = NULL;
 
@@ -108,6 +110,7 @@ int memory_test(void)
 		}
 	}
 
+	tmp_set_vaddr_base(system_memory);
 	memblock_add(pmem_base, pmem_limit + 1);
 
 	for (size_t i = 0; i < nr_mem_map_entries; i++) {
diff --git a/sandbox/vm/page.c b/sandbox/vm/page.c
index 51ba4cf..8caf2e8 100644
--- a/sandbox/vm/page.c
+++ b/sandbox/vm/page.c
@@ -39,6 +39,13 @@ static size_t page_order_bytes[] = {
 #endif
 };
 
+/* temporary */
+static void *tmp_vaddr_base = NULL;
+void tmp_set_vaddr_base(void *p)
+{
+	tmp_vaddr_base = p;
+}
+
 void vm_page_init_array()
 {
 	size_t pmem_size = 0;
@@ -90,8 +97,7 @@ phys_addr_t vm_page_get_paddr(vm_page_t *pg)
 
 void *vm_page_get_vaddr(vm_page_t *pg)
 {
-	/* TODO */
-	return NULL;
+	return (void *)((char *)tmp_vaddr_base + (vm_page_get_pfn(pg) * VM_PAGE_SIZE));
 }
 
 size_t vm_page_get_pfn(vm_page_t *pg)
@@ -148,7 +154,7 @@ vm_zone_t *vm_page_get_zone(vm_page_t *pg)
 	if (pg->p_zone >= VM_MAX_ZONES) {
 		return NULL;
 	}
-	
+
 	return &node->pg_zones[pg->p_zone];
 }
 
@@ -176,7 +182,7 @@ vm_page_t *vm_page_alloc(vm_page_order_t order, vm_flags_t flags)
 
 		zone_id--;
 	}
-	
+
 	return NULL;
 }
 
@@ -216,7 +222,7 @@ int vm_page_split(vm_page_t *pg, vm_page_t **a, vm_page_t **b)
 
 	*a = pg;
 	*b = buddy;
-	
+
 	return 0;
 }
 
@@ -258,7 +264,7 @@ vm_page_t *vm_page_merge(vm_page_t *a, vm_page_t *b)
 	}
 
 	a->p_flags |= VM_PAGE_HEAD;
-	
+
 	return a;
 }