[Verse 1]
Your program thinks it owns the universe complete
Virtual addresses sprawling infinite and neat
But silicon beneath tells a different tale
Physical memory's finite, small and frail
The MMU stands guard between these worlds
Where virtual dreams meet hardware's rigid curls
[Chorus]
Page tables map the great divide
Virtual to physical, side by side
Four kilobyte pages, neat and clean
TLB caches what the processor's seen
Translation happens lightning fast
Virtual illusions cannot last
[Verse 2]
Each process gets its private address space
Zero to max, its own secluded place
But underneath, the pages scatter wide
Through DRAM banks where electrons hide
The page table holds the secret key
Which physical frame your virtual will be
[Chorus]
Page tables map the great divide
Virtual to physical, side by side
Four kilobyte pages, neat and clean
TLB caches what the processor's seen
Translation happens lightning fast
Virtual illusions cannot last
[Bridge]
When TLB misses, the walking starts
Through multi-level table charts
Page directory, page table too
Each level narrows down the view
Until the frame number appears
And memory access perseveres
[Verse 3]
Protection bits control the game
Read, write, execute by name
Invalid entries trigger faults
The kernel handles memory vaults
Swapped out pages hit the disk
While present bits assess the risk
[Final Chorus]
Page tables map the great divide
Virtual to physical, side by side
Four kilobyte pages, neat and clean
TLB caches what the processor's seen
Address translation, hardware's art
MMU plays the crucial part
[Outro]
From virtual dreams to silicon real
The MMU makes the magic feel
Seamless to code running above
Memory management systems love