Extended Paging

  • Extended paging allows for much larger page frames 4mb instead of 4kb
  • Allows for large amount of contiguous linear addresses to be converted until large sections of contiguous physical addresses.  The kernel can do so without intermediate paging thus saving memory 
  • Allows for preservation of TLB entries

One less level of paging.

  • This changes the format of the linear address
    • Most significant ten bits: Entry in page directory (select page)
    • Lease significant twenty two bits : Offset in page frame
  • Enabled using the PSE flag of the cr4 register both extended and regular paging can be used at the same time

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