In a swapping/relocation system, the values assigned to the register pair prevent one user process from writing into the address space of another user process. However, these assignment operations are themselves privileged instructions that can only be executed in kernel mode. Is it conceivable that some operating-system processes might have the entire main memory as their address space? If this is possible, is it necessarily a bad thing? Explain.

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Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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In a swapping/relocation system, the values assigned to the <base, limit> register
pair prevent one user process from writing into the address space of another user
process. However, these assignment operations are themselves privileged
instructions that can only be executed in kernel mode.
Is it conceivable that some operating-system processes might have the entire
main memory as their address space? If this is possible, is it necessarily a bad
thing? Explain.
Transcribed Image Text:In a swapping/relocation system, the values assigned to the <base, limit> register pair prevent one user process from writing into the address space of another user process. However, these assignment operations are themselves privileged instructions that can only be executed in kernel mode. Is it conceivable that some operating-system processes might have the entire main memory as their address space? If this is possible, is it necessarily a bad thing? Explain.
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