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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5270 | serge | 1 | #ifndef _ASM_X86_PAGE_H |
| 2 | #define _ASM_X86_PAGE_H |
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| 3 | |||
| 4 | #include |
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| 5 | |||
| 6 | #ifdef __KERNEL__ |
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| 7 | |||
| 8 | #include |
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| 9 | |||
| 10 | #ifdef CONFIG_X86_64 |
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| 11 | #include |
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| 12 | #else |
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| 13 | #include |
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| 14 | #endif /* CONFIG_X86_64 */ |
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| 15 | |||
| 16 | #ifndef __ASSEMBLY__ |
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| 17 | |||
| 18 | struct page; |
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| 19 | |||
| 20 | #include |
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| 21 | extern struct range pfn_mapped[]; |
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| 22 | extern int nr_pfn_mapped; |
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| 23 | |||
| 24 | static inline void clear_user_page(void *page, unsigned long vaddr, |
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| 25 | struct page *pg) |
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| 26 | { |
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| 27 | clear_page(page); |
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| 28 | } |
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| 29 | |||
| 30 | static inline void copy_user_page(void *to, void *from, unsigned long vaddr, |
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| 31 | struct page *topage) |
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| 32 | { |
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| 33 | copy_page(to, from); |
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| 34 | } |
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| 35 | |||
| 36 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ |
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| 37 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) |
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| 38 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
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| 39 | |||
| 40 | #define __pa(x) __phys_addr((unsigned long)(x)) |
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| 41 | #define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) |
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| 42 | /* __pa_symbol should be used for C visible symbols. |
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| 43 | This seems to be the official gcc blessed way to do such arithmetic. */ |
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| 44 | /* |
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| 45 | * We need __phys_reloc_hide() here because gcc may assume that there is no |
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| 46 | * overflow during __pa() calculation and can optimize it unexpectedly. |
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| 47 | * Newer versions of gcc provide -fno-strict-overflow switch to handle this |
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| 48 | * case properly. Once all supported versions of gcc understand it, we can |
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| 49 | * remove this Voodoo magic stuff. (i.e. once gcc3.x is deprecated) |
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| 50 | */ |
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| 51 | #define __pa_symbol(x) \ |
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| 52 | __phys_addr_symbol(__phys_reloc_hide((unsigned long)(x))) |
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| 53 | |||
| 54 | #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) |
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| 55 | |||
| 56 | #define __boot_va(x) __va(x) |
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| 57 | #define __boot_pa(x) __pa(x) |
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| 58 | |||
| 59 | /* |
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| 60 | * virt_to_page(kaddr) returns a valid pointer if and only if |
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| 61 | * virt_addr_valid(kaddr) returns true. |
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| 62 | */ |
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| 63 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
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| 64 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) |
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| 65 | extern bool __virt_addr_valid(unsigned long kaddr); |
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| 66 | #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) |
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| 67 | |||
| 68 | #endif /* __ASSEMBLY__ */ |
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| 69 | |||
| 70 | #include |
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| 71 | #include |
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| 72 | |||
| 73 | #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA |
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| 74 | |||
| 75 | #endif /* __KERNEL__ */ |
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| 76 | #endif /* _ASM_X86_PAGE_H */ |