Seonglae ChoPage directory’s base address
Four-level paging for future hardware which has many three level to mapping to hardware in linux. (scalability, extensibility). 64bit usually use 3 level paging and 128 is might maximum for the future
The physical address of the Page Directory in use is stored in the mm_struct.pgd (
cr3 register when intel)Each process has its own Page Global Directory and its own set of Page Tables.
Four-level paging model mapping to two-level paging hardware like Intel Page directory.
