[Verse 1] Programs think they own the world, each process believes it's king With gigabytes of space to roam, addresses stretching everything But underneath this grand illusion lies a clever translation game Where virtual becomes the real through mapping's sleight of hand [Chorus] Virtual to physical, the MMU decides Page tables hold the secrets where each address resides Translate and validate, protection bits align Virtual memory magic makes the scattered pages shine [Verse 2] Four kilobyte chunks called pages, fragmented but seem whole The operating system juggles what fits in memory's bowl When pages aren't in RAM today, they're sleeping on the disk Page faults wake the missing ones through interrupt's swift whisk [Chorus] Virtual to physical, the MMU decides Page tables hold the secrets where each address resides Translate and validate, protection bits align Virtual memory magic makes the scattered pages shine [Bridge] TLB caches recent mappings, speed beyond compare Valid, dirty, present bits tell us what is where Kernel space and user space, privilege levels guard Segmentation faults punish when boundaries hit too hard [Verse 3] Demand paging loads just what we need, lazy allocation's art Swap space extends our memory when physical falls apart Copy-on-write saves precious RAM until the moment's right Each process gets its private view of one enormous sight [Chorus] Virtual to physical, the MMU decides Page tables hold the secrets where each address resides Translate and validate, protection bits align Virtual memory magic makes the scattered pages shine [Outro] From zero to the highest byte, each program owns it all But hardware translates every fetch through virtual memory's call
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