git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |