Commit | Line | Data |
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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 | ||
6bc56a4d MWO |
37 | #define vma_alloc_zeroed_movable_folio(vma, vaddr) \ |
38 | vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr, false) | |
345b904c | 39 | |
cf4fb15b | 40 | #ifndef __pa |
98fd5aee | 41 | #define __pa(x) __phys_addr((unsigned long)(x)) |
cf4fb15b YL |
42 | #endif |
43 | ||
af5c2bd1 | 44 | #define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) |
98fd5aee JF |
45 | /* __pa_symbol should be used for C visible symbols. |
46 | This seems to be the official gcc blessed way to do such arithmetic. */ | |
8fd49936 NK |
47 | /* |
48 | * We need __phys_reloc_hide() here because gcc may assume that there is no | |
49 | * overflow during __pa() calculation and can optimize it unexpectedly. | |
50 | * Newer versions of gcc provide -fno-strict-overflow switch to handle this | |
51 | * case properly. Once all supported versions of gcc understand it, we can | |
52 | * remove this Voodoo magic stuff. (i.e. once gcc3.x is deprecated) | |
53 | */ | |
7d74275d AD |
54 | #define __pa_symbol(x) \ |
55 | __phys_addr_symbol(__phys_reloc_hide((unsigned long)(x))) | |
98fd5aee | 56 | |
cf4fb15b | 57 | #ifndef __va |
98fd5aee | 58 | #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) |
cf4fb15b | 59 | #endif |
98fd5aee JF |
60 | |
61 | #define __boot_va(x) __va(x) | |
62 | #define __boot_pa(x) __pa(x) | |
63 | ||
af5c2bd1 VN |
64 | /* |
65 | * virt_to_page(kaddr) returns a valid pointer if and only if | |
66 | * virt_addr_valid(kaddr) returns true. | |
67 | */ | |
98fd5aee | 68 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
af5c2bd1 VN |
69 | extern bool __virt_addr_valid(unsigned long kaddr); |
70 | #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) | |
98fd5aee | 71 | |
8e5647a7 MR |
72 | static __always_inline void *pfn_to_kaddr(unsigned long pfn) |
73 | { | |
74 | return __va(pfn << PAGE_SHIFT); | |
75 | } | |
76 | ||
1fb85d06 AH |
77 | static __always_inline u64 __canonical_address(u64 vaddr, u8 vaddr_bits) |
78 | { | |
79 | return ((s64)vaddr << (64 - vaddr_bits)) >> (64 - vaddr_bits); | |
80 | } | |
81 | ||
82 | static __always_inline u64 __is_canonical_address(u64 vaddr, u8 vaddr_bits) | |
83 | { | |
84 | return __canonical_address(vaddr, vaddr_bits) == vaddr; | |
85 | } | |
86 | ||
345b904c JF |
87 | #endif /* __ASSEMBLY__ */ |
88 | ||
e62f4473 | 89 | #include <asm-generic/memory_model.h> |
5b17e1cd | 90 | #include <asm-generic/getorder.h> |
e62f4473 | 91 | |
fd8526ad | 92 | #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA |
345b904c | 93 | |
11b7c7dc | 94 | #endif /* __KERNEL__ */ |
1965aae3 | 95 | #endif /* _ASM_X86_PAGE_H */ |