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- Steps for VM replacement:
-
- (1) Study Sprite VM interface.
-
- (2) Determine mapping of (1) onto Mach VM interface (including mapping
- of return values).
-
- (3) Determine which pagers are needed, or at least understand how the
- different pagers are used.
-
- (4) Write stubs for lock, spl calls.
-
- (5) Write stubs for task/thread management.
-
- (6) put 3.0 pager back into kernel (merge server/vm/inode_pager and
- kernel/boot_ufs code, I guess).
-
- (7) Teach default pager about Sprite FS interface.
-
- (8) Study default exception handler, decide whether to keep or whether
- to write a stub for thread_doexception that uses signals.
-
- (9) Merge Sprite and Mach trap handlers.
-
- (10) Write memory management stubs, using Sprite malloc/free
-
- (11) Build with VM; migration turned off.
-
- (12) Add encapsulation/decapsulation routines for process migration.
- Re-enable migration.
-
- (13) Write queue package stubs?
-
- (13) Rewrite pageout code to cooperate with file system. Is there a
- limit on the file cache size? Does the inode pager support sticky
- segments?
-