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