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23 lines
441 B
23 lines
441 B
20 years ago
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#ifndef _I386_PGTABLE_3LEVEL_DEFS_H
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#define _I386_PGTABLE_3LEVEL_DEFS_H
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/*
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* PGDIR_SHIFT determines what a top-level page table entry can map
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*/
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#define PGDIR_SHIFT 30
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#define PTRS_PER_PGD 4
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/*
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* PMD_SHIFT determines the size of the area a middle-level
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* page table can map
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*/
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#define PMD_SHIFT 21
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#define PTRS_PER_PMD 512
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/*
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* entries per page directory level
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*/
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#define PTRS_PER_PTE 512
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#endif /* _I386_PGTABLE_3LEVEL_DEFS_H */
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