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C/C++ Source or Header  |  2008-12-24  |  569 b   |  29 lines
  1. #ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H
  2. #define _ASM_X86_PGTABLE_3LEVEL_DEFS_H
  3.  
  4. #ifdef CONFIG_PARAVIRT
  5. #define SHARED_KERNEL_PMD    (pv_info.shared_kernel_pmd)
  6. #else
  7. #define SHARED_KERNEL_PMD    1
  8. #endif
  9.  
  10. /*
  11.  * PGDIR_SHIFT determines what a top-level page table entry can map
  12.  */
  13. #define PGDIR_SHIFT    30
  14. #define PTRS_PER_PGD    4
  15.  
  16. /*
  17.  * PMD_SHIFT determines the size of the area a middle-level
  18.  * page table can map
  19.  */
  20. #define PMD_SHIFT    21
  21. #define PTRS_PER_PMD    512
  22.  
  23. /*
  24.  * entries per page directory level
  25.  */
  26. #define PTRS_PER_PTE    512
  27.  
  28. #endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */
  29.