Code Wrangling at its Best
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
Continue Reading “Chapter 8 – Moving the Heap onto Virtual Memory”
In Chapter 5, we enabled paging with a simple identity map: That gave us a working paged kernel, but not yet a comfortable way to allocate variable-sized objects. The physical memory manager gives us whole pages: But kernel code usually needs smaller objects: So this chapter builds the first kernel heap. We will keep it
Continue Reading “Chapter 6 — Building the First Kernel Heap”
Today, we are beginning a new article series: “Writing a Linux-Style Operating System From Scratch.” In this series, we will walk step by step through the process of creating our own operating system from the ground up. Many operating system tutorials stop shortly after the system boots and prints a simple message on the screen.
Continue Reading “Writing a Linux-style Operating System From Scratch”
Recent Comments