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Rev 1382 Rev 1411
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#define PAGE_WRITE      (1<<PAGE_WRITE_SHIFT)
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#define PAGE_WRITE      (1<<PAGE_WRITE_SHIFT)
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#define PAGE_EXEC       (1<<PAGE_EXEC_SHIFT)
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#define PAGE_EXEC       (1<<PAGE_EXEC_SHIFT)
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#define PAGE_GLOBAL     (1<<PAGE_GLOBAL_SHIFT)
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#define PAGE_GLOBAL     (1<<PAGE_GLOBAL_SHIFT)
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/** Page fault access type. */
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enum pf_access {
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    PF_ACCESS_READ,
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    PF_ACCESS_WRITE,
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    PF_ACCESS_EXEC
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};
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typedef enum pf_access pf_access_t;
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/** Operations to manipulate page mappings. */
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/** Operations to manipulate page mappings. */
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struct page_mapping_operations {
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struct page_mapping_operations {
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    void (* mapping_insert)(as_t *as, __address page, __address frame, int flags);
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    void (* mapping_insert)(as_t *as, __address page, __address frame, int flags);
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    void (* mapping_remove)(as_t *as, __address page);
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    void (* mapping_remove)(as_t *as, __address page);
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    pte_t *(* mapping_find)(as_t *as, __address page);
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    pte_t *(* mapping_find)(as_t *as, __address page);