arch/sh/include/asm/pgtable-2level.h

   1 #ifndef __ASM_SH_PGTABLE_2LEVEL_H
   2 #define __ASM_SH_PGTABLE_2LEVEL_H
   3
   4 #include <asm-generic/pgtable-nopmd.h>
   5
   6 /*
   7  * traditional two-level paging structure
   8  */
   9 #define PAGETABLE_LEVELS        2
  10
  11 /* PTE bits */
  12 #define PTE_MAGNITUDE           2       /* 32-bit PTEs */
  13
  14 #define PTE_SHIFT               PAGE_SHIFT
  15 #define PTE_BITS                (PTE_SHIFT - PTE_MAGNITUDE)
  16
  17 /* PGD bits */
  18 #define PGDIR_SHIFT             (PTE_SHIFT + PTE_BITS)
  19
  20 #define PTRS_PER_PGD            (PAGE_SIZE / (1 << PTE_MAGNITUDE))
  21 #define USER_PTRS_PER_PGD       (TASK_SIZE/PGDIR_SIZE)
  22
  23 #endif /* __ASM_SH_PGTABLE_2LEVEL_H */