Commit | Line | Data |
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1965aae3 PA |
1 | #ifndef _ASM_X86_PAGE_H |
2 | #define _ASM_X86_PAGE_H | |
83a5101b | 3 | |
56cefcea IM |
4 | #include <linux/types.h> |
5 | ||
11b7c7dc JF |
6 | #ifdef __KERNEL__ |
7 | ||
51c78eb3 | 8 | #include <asm/page_types.h> |
83a5101b JF |
9 | |
10 | #ifdef CONFIG_X86_64 | |
11b7c7dc JF |
11 | #include <asm/page_64.h> |
12 | #else | |
13 | #include <asm/page_32.h> | |
83a5101b JF |
14 | #endif /* CONFIG_X86_64 */ |
15 | ||
345b904c | 16 | #ifndef __ASSEMBLY__ |
5f5192b9 | 17 | |
345b904c JF |
18 | struct page; |
19 | ||
f2f7abcb | 20 | static inline void clear_user_page(void *page, unsigned long vaddr, |
51c78eb3 | 21 | struct page *pg) |
345b904c JF |
22 | { |
23 | clear_page(page); | |
24 | } | |
25 | ||
f2f7abcb | 26 | static inline void copy_user_page(void *to, void *from, unsigned long vaddr, |
51c78eb3 | 27 | struct page *topage) |
345b904c JF |
28 | { |
29 | copy_page(to, from); | |
30 | } | |
31 | ||
32 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ | |
33 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) | |
34 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE | |
35 | ||
98fd5aee | 36 | #define __pa(x) __phys_addr((unsigned long)(x)) |
af5c2bd1 | 37 | #define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) |
98fd5aee JF |
38 | /* __pa_symbol should be used for C visible symbols. |
39 | This seems to be the official gcc blessed way to do such arithmetic. */ | |
8fd49936 NK |
40 | /* |
41 | * We need __phys_reloc_hide() here because gcc may assume that there is no | |
42 | * overflow during __pa() calculation and can optimize it unexpectedly. | |
43 | * Newer versions of gcc provide -fno-strict-overflow switch to handle this | |
44 | * case properly. Once all supported versions of gcc understand it, we can | |
45 | * remove this Voodoo magic stuff. (i.e. once gcc3.x is deprecated) | |
46 | */ | |
98fd5aee JF |
47 | #define __pa_symbol(x) __pa(__phys_reloc_hide((unsigned long)(x))) |
48 | ||
49 | #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) | |
50 | ||
51 | #define __boot_va(x) __va(x) | |
52 | #define __boot_pa(x) __pa(x) | |
53 | ||
af5c2bd1 VN |
54 | /* |
55 | * virt_to_page(kaddr) returns a valid pointer if and only if | |
56 | * virt_addr_valid(kaddr) returns true. | |
57 | */ | |
98fd5aee JF |
58 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
59 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
af5c2bd1 VN |
60 | extern bool __virt_addr_valid(unsigned long kaddr); |
61 | #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) | |
98fd5aee | 62 | |
345b904c JF |
63 | #endif /* __ASSEMBLY__ */ |
64 | ||
e62f4473 | 65 | #include <asm-generic/memory_model.h> |
5b17e1cd | 66 | #include <asm-generic/getorder.h> |
e62f4473 JF |
67 | |
68 | #define __HAVE_ARCH_GATE_AREA 1 | |
345b904c | 69 | |
11b7c7dc | 70 | #endif /* __KERNEL__ */ |
1965aae3 | 71 | #endif /* _ASM_X86_PAGE_H */ |