Month: July 2026

Chapter 7 — A Real Virtual Memory Mapping Layer

Posted By: R. MorganPosted On:
Chapter 7 — A Real Virtual Memory Mapping Layer
This entry is part 7 of 7 in the series Writing A Linux Style Operating System From Scratch

In Chapter 5 we enabled paging, but only with a fixed identity map: In Chapter 6 we built a heap, but it still had an important weakness: because only the first 16 MiB were identity-mapped. Now we fix the architectural problem. This chapter adds a small virtual memory manager, or VMM: This lets the kernel

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