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

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  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 */
 24 

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