Bahadir Balban 35d2d275b6 Multiple above-minor updates. ...

- fixed is_err(x), was evaluating x twice, resulting in calling a
function x twice.

- Divided task initialisation into multiple parts.
- MM0 now creates a tcb for itself and maintains memory regions of its own.
- MM0's tcb is used for mmapping other tasks' regions. MM0 mmaps and prefaults
  those regions, instead of the typical mmap() and fault approach used by
  non-pager tasks.
  For example there's an internal shmget_shmat() path to map in other tasks'
  shm utcbs. Those mappings are then prefaulted into mm0's address space using
  the default fault handling path.

- FS0 now reads task data into its utcb from mm0 via a syscall.
  FS0 shmat()s to utcbs of other tasks, e.g. mm0 and test0.

  FS0 then crashes, that is to be fixed and where this commit is left last.

2008-03-24 00:34:14 +00:00

..

memlayout.txt

Multiple above-minor updates.

2008-03-24 00:34:14 +00:00