Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1965aae3 PA |
2 | #ifndef _ASM_X86_PAGE_64_H |
3 | #define _ASM_X86_PAGE_64_H | |
1da177e4 | 4 | |
51c78eb3 | 5 | #include <asm/page_64_types.h> |
83a5101b | 6 | |
fb50b020 | 7 | #ifndef __ASSEMBLY__ |
f25d3847 | 8 | #include <asm/alternative.h> |
fb50b020 AD |
9 | |
10 | /* duplicated to the one in bootmem.h */ | |
11 | extern unsigned long max_pfn; | |
12 | extern unsigned long phys_base; | |
13 | ||
0bdf525f AD |
14 | static inline unsigned long __phys_addr_nodebug(unsigned long x) |
15 | { | |
16 | unsigned long y = x - __START_KERNEL_map; | |
17 | ||
18 | /* use the carry flag to determine if x was < __START_KERNEL_map */ | |
19 | x = y + ((x > y) ? phys_base : (__START_KERNEL_map - PAGE_OFFSET)); | |
20 | ||
21 | return x; | |
22 | } | |
23 | ||
24 | #ifdef CONFIG_DEBUG_VIRTUAL | |
fb50b020 | 25 | extern unsigned long __phys_addr(unsigned long); |
7d74275d | 26 | extern unsigned long __phys_addr_symbol(unsigned long); |
0bdf525f AD |
27 | #else |
28 | #define __phys_addr(x) __phys_addr_nodebug(x) | |
7d74275d AD |
29 | #define __phys_addr_symbol(x) \ |
30 | ((unsigned long)(x) - __START_KERNEL_map + phys_base) | |
0bdf525f | 31 | #endif |
fb50b020 AD |
32 | |
33 | #define __phys_reloc_hide(x) (x) | |
34 | ||
35 | #ifdef CONFIG_FLATMEM | |
36 | #define pfn_valid(pfn) ((pfn) < max_pfn) | |
37 | #endif | |
38 | ||
f25d3847 BP |
39 | void clear_page_orig(void *page); |
40 | void clear_page_rep(void *page); | |
41 | void clear_page_erms(void *page); | |
42 | ||
43 | static inline void clear_page(void *page) | |
44 | { | |
45 | alternative_call_2(clear_page_orig, | |
46 | clear_page_rep, X86_FEATURE_REP_GOOD, | |
47 | clear_page_erms, X86_FEATURE_ERMS, | |
48 | "=D" (page), | |
49 | "0" (page) | |
50 | : "memory", "rax", "rcx"); | |
51 | } | |
52 | ||
fb50b020 AD |
53 | void copy_page(void *to, void *from); |
54 | ||
ce0fa3e5 TL |
55 | #ifdef CONFIG_X86_MCE |
56 | #define arch_unmap_kpfn arch_unmap_kpfn | |
57 | #endif | |
58 | ||
fb50b020 AD |
59 | #endif /* !__ASSEMBLY__ */ |
60 | ||
1ad83c85 AL |
61 | #ifdef CONFIG_X86_VSYSCALL_EMULATION |
62 | # define __HAVE_ARCH_GATE_AREA 1 | |
63 | #endif | |
a6c19dfe | 64 | |
1965aae3 | 65 | #endif /* _ASM_X86_PAGE_64_H */ |