5 - Move `join' implementation here, from `threads' project, to help
6 normalize the project difficulties.
8 - The semantics of the join system call should change so that it
9 only returns the exit code once.
11 - Mark read-only pages as actually read-only in the page table. Or,
12 since this was consistently rated as the easiest project by the
13 students, require them to do it.
15 - Don't provide per-process pagedir implementation but only
16 single-process implementation and require students to implement
17 the separation? This project was rated as the easiest after all.
18 Alternately we could just remove the synchronization on pid
19 selection and check that students fix it.
23 - Finish writing tour.
25 - Add "Digging Deeper" sections that describe the nitty-gritty x86
26 details for the benefit of those interested.
28 - Add explanations of what "real" OSes do to give students some
35 . Low-level x86 stuff, like paged page tables.
39 - mmap/munmap should use segment IDs like Nachos. Too hard
42 - Add src/testcases/vm, src/testcases/filesys and make it clear to use
47 - Release some of them.
49 - The threads, userprog, vm test source files could use
50 factorization and cleanup along the lines of fslib in the filesys
53 - The p1-4.c testcase needs significant tuning. Currently it takes
54 too long (especially when SHOW_PROGRESS is turned on) and doesn't
55 show significant improvement.