Explain why address space identifiers (ASIDs) are used.
Step 11 of 2
When the TLB attempts to resolve virtual page numbers, it ensures that the for the currently running process matches the ASID associated with the virtual page. If the ASIDs do not match, the attempt is treated as a TLB miss.
So ASIDs are used to provide address space protection in the TLB as well as supporting TLB entries for several different processes at the same time.
Recommended textbook solutions
(1) prove that the relation is an equivalence relation, and (2) describe the distinct equivalence classes of each relation. Let A be the set of identifiers in a computer program. It is common for identifiers to be used for only a short part of the execution time of a program and not to be used again to execute other parts of the program. In such cases, arranging for identifiers to share memory locations makes efficient use of a computer’s memory capacity. Define a relation R on A as follows: For all identifiers x and y,
the values of x and y are stored in the same memory location during execution of the program.