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.
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.