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6082 | serge | 1 | #ifndef _ASM_X86_PAGE_DEFS_H |
2 | #define _ASM_X86_PAGE_DEFS_H |
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3 | |||
4 | #include |
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5 | #include |
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6 | |||
7 | /* PAGE_SHIFT determines the page size */ |
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7143 | serge | 8 | #define PAGE_SHIFT 12 |
9 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
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10 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
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6082 | serge | 11 | |
12 | #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) |
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13 | #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) |
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14 | |||
15 | #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) |
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16 | #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) |
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17 | |||
18 | #define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) |
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19 | #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) |
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20 | |||
21 | /* Cast *PAGE_MASK to a signed type so that it is sign-extended if |
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22 | virtual addresses are 32-bits but physical addresses are larger |
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23 | (ie, 32-bit PAE). */ |
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24 | #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) |
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25 | #define PHYSICAL_PMD_PAGE_MASK (((signed long)PMD_PAGE_MASK) & __PHYSICAL_MASK) |
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26 | #define PHYSICAL_PUD_PAGE_MASK (((signed long)PUD_PAGE_MASK) & __PHYSICAL_MASK) |
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27 | |||
28 | #define HPAGE_SHIFT PMD_SHIFT |
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29 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
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30 | #define HPAGE_MASK (~(HPAGE_SIZE - 1)) |
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31 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) |
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32 | |||
33 | #define HUGE_MAX_HSTATE 2 |
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34 | |||
35 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) |
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36 | |||
37 | #define VM_DATA_DEFAULT_FLAGS \ |
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38 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ |
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39 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
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40 | |||
41 | #define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \ |
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42 | CONFIG_PHYSICAL_ALIGN) |
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43 | |||
44 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) |
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45 | |||
46 | #ifdef CONFIG_X86_64 |
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47 | #include |
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48 | #define IOREMAP_MAX_ORDER (PUD_SHIFT) |
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49 | #else |
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50 | #include |
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51 | #define IOREMAP_MAX_ORDER (PMD_SHIFT) |
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52 | #endif /* CONFIG_X86_64 */ |
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53 | |||
54 | #ifndef __ASSEMBLY__ |
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55 | |||
56 | extern int devmem_is_allowed(unsigned long pagenr); |
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57 | |||
58 | extern unsigned long max_low_pfn_mapped; |
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59 | extern unsigned long max_pfn_mapped; |
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60 | |||
61 | static inline phys_addr_t get_max_mapped(void) |
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62 | { |
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63 | return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; |
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64 | } |
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65 | |||
66 | bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn); |
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67 | |||
68 | extern unsigned long init_memory_mapping(unsigned long start, |
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69 | unsigned long end); |
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70 | |||
71 | extern void initmem_init(void); |
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72 | |||
73 | #endif /* !__ASSEMBLY__ */ |
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74 | |||
75 | #endif /* _ASM_X86_PAGE_DEFS_H */><>><>><>><>><>><>><> |