Look at the code for the prog and other programs shown below.  Assume all function and system calls are successful, output occurs immediately, and all the necessary includes are present.

The segment table for a process running in this system is shown below:

What is the size of a virtual address?

The purpose of the TLB is to speed address translation.

On the same system, how many pages are there in the virtual address space of a process?

Paging

Convert the VA 0x8011 to its PA.

The portion of trap.h and syscall.h files for xv6 are shown in the table below.

For a segment that grows negatively, if a VA’s offset is out-of-bounds then a page fault will occur.

The valid bit in the TLB means the same as the valid bit in the entries of the page table.