Nested paging structure entries

  • Comparable to the traditional paging structure entries
    • bit[11:0] = flags including page permissions
    • bit[N:12] = either a PA of the next nested paging structure, or a page frame to translate to
  • Intel: Similar to traditional paging structure entries but different
    • 📖Figure 29-1. Formats of EPTP and EPT Paging-Structure Entries
    • taking 4KB translation as an example
      • 📖Table 29-1. Format of an EPT PML4 Entry (PML4E) that References an EPT Page-Directory-Pointer Table
      • 📖Table 29-3. Format of an EPT Page-Directory-Pointer-Table Entry (PDPTE) that References an EPT Page Directory
      • 📖Table 29-5. Format of an EPT Page-Directory Entry (PDE) that References an EPT Page Table
      • 📖Table 29-6. Format of an EPT Page-Table Entry that Maps a 4-KByte Page
  • AMD: Exactly the same as traditional paging structure entries
    • taking 4KB translation as an example
      • 📖Figure 5-20. 4-Kbyte PML4E-Long Mode
      • 📖Figure 5-21. 4-Kbyte PDPE-Long Mode
      • 📖Figure 5-22. 4-Kbyte PDE-Long Mode
      • 📖Figure 5-23. 4-Kbyte PTE-Long Mode