Pages (Virtual Memory)

What?

In the same way Cache is split into Cache Lines, Virtual Memory is split into Pages. I.E. fixes sized blocks of memory.

• Frames in Physical memory == Pages in VM.

Normally:

• Typical Page sizes are $4$-$16KB$ ($MB$ or $GB$ in Servers) ($2^{12}$ - $2^{14}$).
• The virtual address comprises of the virtual page number and the byte within.
• The physical address address is the physical page and offset. The offset is the same as the VA’s.
• The MMU maps virtual pages to physical pages, mapping using a Page Table
• Physical memory has a space reserved by the OS called Swap Space.