2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Copyright 2003 PathScale, Inc.
4 * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
5 * Licensed under the GPL
12 #include "asm/fixmap.h"
14 #define pmd_populate_kernel(mm, pmd, pte) \
15 set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
17 #define pmd_populate(mm, pmd, pte) \
18 set_pmd(pmd, __pmd(_PAGE_TABLE + \
19 ((unsigned long long)page_to_pfn(pte) << \
20 (unsigned long long) PAGE_SHIFT)))
21 #define pmd_pgtable(pmd) pmd_page(pmd)
24 * Allocate and free page tables.
26 extern pgd_t
*pgd_alloc(struct mm_struct
*);
27 extern void pgd_free(struct mm_struct
*mm
, pgd_t
*pgd
);
29 extern pte_t
*pte_alloc_one_kernel(struct mm_struct
*, unsigned long);
30 extern pgtable_t
pte_alloc_one(struct mm_struct
*, unsigned long);
32 static inline void pte_free_kernel(struct mm_struct
*mm
, pte_t
*pte
)
34 free_page((unsigned long) pte
);
37 static inline void pte_free(struct mm_struct
*mm
, pgtable_t pte
)
39 pgtable_page_dtor(pte
);
43 #define __pte_free_tlb(tlb,pte) \
45 pgtable_page_dtor(pte); \
46 tlb_remove_page((tlb),(pte)); \
49 #ifdef CONFIG_3_LEVEL_PGTABLES
51 static inline void pmd_free(struct mm_struct
*mm
, pmd_t
*pmd
)
53 free_page((unsigned long)pmd
);
56 #define __pmd_free_tlb(tlb,x) tlb_remove_page((tlb),virt_to_page(x))
59 #define check_pgt_cache() do { } while (0)
64 * Overrides for Emacs so that we follow Linus's tabbing style.
65 * Emacs will notice this stuff at the end of the file and automatically
66 * adjust the settings for this buffer only. This must remain at the end
68 * ---------------------------------------------------------------------------
70 * c-file-style: "linux"
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