Which of the following need not necessarily be saved on a context switch between processes ? (GATE CS 2000)
A)general purpose registers
B)translation look-aside buffer
C)program counter
D)all of these

Question

Quizplus · Accepted Answer

The Translation Look-aside Buffer (TLB) is part of the memory management unit (MMU) and caches address translation information. On a context switch, the TLB does not necessarily need to be saved because the address space is changing, and the cached translations in the TLB for one process may not be relevant for another. The TLB is typically flushed or invalidated on a context switch.

Which of the Following Need Not Necessarily Be Saved on a Context