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Under paged memory management scheme, simple lock and key memory protection arrangement may still be required if the _________ processors do not have address mapping hardware.
asked in Operating System by Boss (40k points) | 726 views
+1
could you suggest any book or any kind of resources to study topic related to this ques in a bit detail?
+1
@arjun Sir @bikram Sir Any explanation in support of this answer??

1 Answer

+10 votes
i/o processors bcz processor will issue address for device controller and if there is no translation hardware then it ain't gonna be peachy.
answered by Junior (519 points)
+1

Can you elaborate it more? Can't understand.

What is meant by simple lock and key memory protection arrangement ?

Is it bcz if I/O processors  do not have address translation h/w it might try to access OS part and corrupt it?

+1
More Information needed.
+1
could you suggest any book or any kind of resources to study topic related to this ques in a bit detail?
+1

simple lock and key memory protection arrangement 

whts the relationship between these two?

+7

I presume that in the absence of address mapping hardware for the I/O processors, (Memory Mapped I/O) 2 processes writing to the same page concurrently require a lock based protection scheme since paging alone cannot prevent the overwriting from happening.



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