Question

Consider the multilevel paging scheme used by the 64-bit x-86 architecture, “page map level 4” from page 207 of the textbook (Modern Operating Systems 4th ed. Tanenbaum). How many memory operations are performed when a user program executes a memory-load operation?

Answer 1

There are three memory operations that would be performed in order to do the memory load operations.

1. we need to access in order to determine where the page table entry for the page could be present.
2. We need to access the page table entry.
3. memory load operation.

So in this way, there are three operations for the memory load operation.

Thanks