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8#ifndef __UM_PGTABLE_2LEVEL_H
9#define __UM_PGTABLE_2LEVEL_H
10
11#include <asm-generic/pgtable-nopmd.h>
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14
15#define PGDIR_SHIFT 22
16#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
17#define PGDIR_MASK (~(PGDIR_SIZE-1))
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23#define PTRS_PER_PTE 1024
24#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
25#define PTRS_PER_PGD 1024
26#define FIRST_USER_ADDRESS 0
27
28#define pte_ERROR(e) \
29 printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), \
30 pte_val(e))
31#define pgd_ERROR(e) \
32 printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), \
33 pgd_val(e))
34
35static inline int pgd_newpage(pgd_t pgd) { return 0; }
36static inline void pgd_mkuptodate(pgd_t pgd) { }
37
38#define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
39
40#define pte_pfn(x) phys_to_pfn(pte_val(x))
41#define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot))
42#define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot))
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46
47#define PTE_FILE_MAX_BITS 27
48
49#define pte_to_pgoff(pte) (pte_val(pte) >> 5)
50
51#define pgoff_to_pte(off) ((pte_t) { ((off) << 5) + _PAGE_FILE })
52
53#endif
54