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35d2d275b6
- 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.