* The tests in tests/ don't apply the grading patches.
+* We need better example programs.
+
+ - Need an mmap example program as a replacement for the crappy mmap FAQ
+ question.
+
* Threads:
- join-invalid doesn't compile if tid_t is not scalar type.
+ - mlfqs tests suck. They aren't even correct, e.g. the amarv
+ submission from win0405 is graded incorrectly.
+
* 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.
Alternately we could just remove the synchronization on pid
selection and check that students fix it.
+* VM project:
+
+ - Discuss the perils of mixing dirty bits between kernel and user virtual
+ memory.
+
+ - Sample solution.
+
+* Filesys project:
+
+ - Increase maximum disk size from 8 MB to something that actually
+ requires doubly indirect nodes. There is a negative pressure here
+ from the bitmap object--perhaps we need a specialized bitmap that
+ doesn't have to be all in-memory at once.
+
+ Alternatively, shrink the inode size.
+
+ - Add mkdir and ls example user programs.
+
+ - Add option to disable buffer cache.
+
+ - Get rid of "dump" commands--they're not really useful.
+
+ - Sample solution.
+
* Documentation:
- Finish writing tour.
. Low-level x86 stuff, like paged page tables.
- . Other good ideas.
+ . Specifics on how to implement sbrk, malloc.
- - mmap/munmap should use segment IDs like Nachos. Too hard
- otherwise.
+ . Other good ideas.
- Add src/testcases/vm, src/testcases/filesys and make it clear to use
them?
projects / pintos-anon / blobdiff