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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1965aae3 PA |
2 | #ifndef _ASM_X86_PAGE_H |
3 | #define _ASM_X86_PAGE_H | |
83a5101b | 4 | |
56cefcea IM |
5 | #include <linux/types.h> |
6 | ||
11b7c7dc JF |
7 | #ifdef __KERNEL__ |
8 | ||
51c78eb3 | 9 | #include <asm/page_types.h> |
83a5101b JF |
10 | |
11 | #ifdef CONFIG_X86_64 | |
11b7c7dc JF |
12 | #include <asm/page_64.h> |
13 | #else | |
14 | #include <asm/page_32.h> | |
83a5101b JF |
15 | #endif /* CONFIG_X86_64 */ |
16 | ||
345b904c | 17 | #ifndef __ASSEMBLY__ |
5f5192b9 | 18 | |
345b904c JF |
19 | struct page; |
20 | ||
0e691cf8 YL |
21 | #include <linux/range.h> |
22 | extern struct range pfn_mapped[]; | |
23 | extern int nr_pfn_mapped; | |
24 | ||
f2f7abcb | 25 | static inline void clear_user_page(void *page, unsigned long vaddr, |
51c78eb3 | 26 | struct page *pg) |
345b904c JF |
27 | { |
28 | clear_page(page); | |
29 | } | |
30 | ||
f2f7abcb | 31 | static inline void copy_user_page(void *to, void *from, unsigned long vaddr, |
51c78eb3 | 32 | struct page *topage) |
345b904c JF |
33 | { |
34 | copy_page(to, from); | |
35 | } | |
36 | ||
37 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ | |
38 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) | |
39 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE | |
40 | ||
cf4fb15b | 41 | #ifndef __pa |
98fd5aee | 42 | #define __pa(x) __phys_addr((unsigned long)(x)) |
cf4fb15b YL |
43 | #endif |
44 | ||
af5c2bd1 | 45 | #define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) |
98fd5aee JF |
46 | /* __pa_symbol should be used for C visible symbols. |
47 | This seems to be the official gcc blessed way to do such arithmetic. */ | |
8fd49936 NK |
48 | /* |
49 | * We need __phys_reloc_hide() here because gcc may assume that there is no | |
50 | * overflow during __pa() calculation and can optimize it unexpectedly. | |
51 | * Newer versions of gcc provide -fno-strict-overflow switch to handle this | |
52 | * case properly. Once all supported versions of gcc understand it, we can | |
53 | * remove this Voodoo magic stuff. (i.e. once gcc3.x is deprecated) | |
54 | */ | |
7d74275d AD |
55 | #define __pa_symbol(x) \ |
56 | __phys_addr_symbol(__phys_reloc_hide((unsigned long)(x))) | |
98fd5aee | 57 | |
cf4fb15b | 58 | #ifndef __va |
98fd5aee | 59 | #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) |
cf4fb15b | 60 | #endif |
98fd5aee JF |
61 | |
62 | #define __boot_va(x) __va(x) | |
63 | #define __boot_pa(x) __pa(x) | |
64 | ||
af5c2bd1 VN |
65 | /* |
66 | * virt_to_page(kaddr) returns a valid pointer if and only if | |
67 | * virt_addr_valid(kaddr) returns true. | |
68 | */ | |
98fd5aee JF |
69 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
70 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
af5c2bd1 VN |
71 | extern bool __virt_addr_valid(unsigned long kaddr); |
72 | #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) | |
98fd5aee | 73 | |
345b904c JF |
74 | #endif /* __ASSEMBLY__ */ |
75 | ||
e62f4473 | 76 | #include <asm-generic/memory_model.h> |
5b17e1cd | 77 | #include <asm-generic/getorder.h> |
e62f4473 | 78 | |
fd8526ad | 79 | #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA |
345b904c | 80 | |
11b7c7dc | 81 | #endif /* __KERNEL__ */ |
1965aae3 | 82 | #endif /* _ASM_X86_PAGE_H */ |