arch/x86/include/asm/pgtable-3level-defs.h

   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 */