Tag: X86 programming

Chapter 8 – Moving the Heap onto Virtual Memory

Posted By: R. MorganPosted On:
Chapter 8 – Moving the Heap onto Virtual Memory
This entry is part 8 of 8 in the series Writing A Linux Style Operating System From Scratch

In Chapter 6, the kernel heap still depended on low identity-mapped physical pages. That worked as a bootstrap step, but it tied the heap to the first 16 MiB of RAM. In Chapter 7, we added a real VMM and proved that the kernel can map and unmap pages anywhere the page tables allow. That

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