Comment.

[pintos-anon] / src / userprog / pagedir.c

diff --git a/src/userprog/pagedir.c b/src/userprog/pagedir.c
index 3f0e9fb47c1217c8bbe0266f8a5b6b7a9e130e0e..c0a015ae831ab20e88311538fb3eb541c0894b25 100644 (file)
--- a/src/userprog/pagedir.c
+++ b/src/userprog/pagedir.c
@@ -199,11 +199,11 @@ pagedir_activate (uint32_t *pd)
 static uint32_t *
 active_pd (void) 
 {
+  /* Copy CR3, the page directory base register (PDBR), into
+     `pd'.
+     See [IA32-v2a] "MOV--Move to/from Control Registers" and
+     [IA32-v3] 3.7.5. */
   uint32_t *pd;
-
-  /* Copy CR3, the page directory base register (PDBR), into `pd'
-     for us to examine.  See [IA32-v2a] "MOV--Move to/from
-     Control Registers" and [IA32-v3] 3.7.5. */
   asm ("movl %%cr3,%0" : "=r" (pd));
   return pd;
 }