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Exposing Address Spaces :
Proposal
Address space interfaces should be exposed to userspace
Processes should be able to:
- Create new address spaces
- Empty or clone current address space
- Populate them
- Switch between them
- Destroy them
Notes:
The solution being proposed involves having address spaces be first-class citizens as far as userspace is concerned. Processes should be able to create them, populate them initially and subsequently change them, switch between them,
and destroy them.
The races are eliminated by the fact that a context switch involves switching address spaces rather than switching processes.
The ability of any UML thread to change any UML address space will eliminate the address space scan that's currently needed.