Update.

diff --git a/TODO b/TODO
index 1650b14625b72fc7cd528efb6d63baae2958791e..8aaf1377022dc3b4aa5ee251768ee8723ef40585 100644 (file)
--- a/TODO
+++ b/TODO
@@ -11,6 +11,12 @@
 
 * Userprog project:
 
+  - Don't emphasize that stuff needs to be copied from user space to
+    kernel space.  Instead, emphasize validation and suggest that
+    copying is a common solution and that it will be necessary in
+    project 3 and in real OSes.  Also revise the grading criteria to
+    match.
+
   - Move `join' implementation here, from `threads' project, to help
     normalize the project difficulties.