can two running processes share the complete process image in physical memory, not just part of it?

can two running processes share the complete process image in physical memory, not just part of it? Here I am talking about the Linux operating systems(eg. Ubuntu). **My thinking:** I think it is **False** in general because the only time it is possible is with copy-on-write during fork() and before any writes have been made. **Que:** Can someone explain to me am I correct or not? If I am wrong please give me some examples