7 extern unsigned long end_pfn;
8 extern unsigned long end_pfn_map;
10 void clear_page(void *page);
11 void copy_page(void *to, void *from);
15 static void inline clear_user_page(void *page, unsigned long vaddr,
21 static void inline copy_user_page(void *to, void *from, unsigned long vaddr,
27 #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
28 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
29 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
31 * These are used to make use of C type-checking..
33 typedef struct { unsigned long pte; } pte_t;
34 typedef struct { unsigned long pmd; } pmd_t;
35 typedef struct { unsigned long pud; } pud_t;
36 typedef struct { unsigned long pgd; } pgd_t;
37 #define PTE_MASK PHYSICAL_PAGE_MASK
39 typedef struct { unsigned long pgprot; } pgprot_t;
41 extern unsigned long phys_base;
43 #define pte_val(x) ((x).pte)
44 #define pmd_val(x) ((x).pmd)
45 #define pud_val(x) ((x).pud)
46 #define pgd_val(x) ((x).pgd)
47 #define pgprot_val(x) ((x).pgprot)
49 #define __pte(x) ((pte_t) { (x) } )
50 #define __pmd(x) ((pmd_t) { (x) } )
51 #define __pud(x) ((pud_t) { (x) } )
52 #define __pgd(x) ((pgd_t) { (x) } )
53 #define __pgprot(x) ((pgprot_t) { (x) } )
55 #endif /* !__ASSEMBLY__ */
61 extern unsigned long __phys_addr(unsigned long);
63 #endif /* __ASSEMBLY__ */
65 #define __pa(x) __phys_addr((unsigned long)(x))
66 #define __pa_symbol(x) __phys_addr((unsigned long)(x))
68 #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
69 #define __boot_va(x) __va(x)
70 #define __boot_pa(x) __pa(x)
72 #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
73 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
74 #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
76 #define __HAVE_ARCH_GATE_AREA 1
77 #define vmemmap ((struct page *)VMEMMAP_START)
79 #include <asm-generic/memory_model.h>
80 #include <asm-generic/page.h>
82 #endif /* __KERNEL__ */
85 #define pfn_valid(pfn) ((pfn) < end_pfn)
89 #endif /* _X86_64_PAGE_H */