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A comment on Show HN: A simple Unix-like operating system that runs Doom.

Re:Show HN: A simple Unix-like operating system that runs Doom by corysama on Saturday September 07, 2019 @11:51AM (#20904524)
Nice. Reminds me of the opengl32.dll's that were made to be only just enough to run GLQuake.

What made 4Mb pages easier than 4Kb?

[ Parent | on HN ]
Re:Show HN: A simple Unix-like operating system that runs Doom by ozkl on Saturday September 07, 2019 @12:05PM (#20904622)
By using 4Mb pages, we can skip one step which is page tables.

In other words, Page Directory points directly to a 4Mb Page Frame. In 4Kb mechanism, Page Directory points to a Page Table which then points to a 4Kb Page Frame.

[ Parent | on HN ]