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    for (i = 0; i < cnt; i++)
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    for (i = 0; i < cnt; i++)
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        page_mapping_insert(AS_KERNEL, s + i*PAGE_SIZE, s + i*PAGE_SIZE, PAGE_NOT_CACHEABLE);
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        page_mapping_insert(AS_KERNEL, s + i*PAGE_SIZE, s + i*PAGE_SIZE, PAGE_NOT_CACHEABLE);
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}
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}
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/** Map page to frame
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/** Insert mapping of page to frame.
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 *
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 *
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 * Map virtual address 'page' to physical address 'frame'
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 * Map virtual address 'page' to physical address 'frame'
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 * using 'flags'. Allocate and setup any missing page tables.
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 * using 'flags'. Allocate and setup any missing page tables.
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 *
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 *
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 * The address space must be locked and interrupts must be disabled.
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 * The address space must be locked and interrupts must be disabled.
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 *
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 *
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 * @param as Address space to wich page belongs..
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 * @param as Address space to wich page belongs.
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 * @param page Virtual address of the page to be mapped.
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 * @param page Virtual address of the page to be mapped.
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 * @param frame Physical address of memory frame to which the mapping is done.
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 * @param frame Physical address of memory frame to which the mapping is done.
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 * @param flags Flags to be used for mapping.
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 * @param flags Flags to be used for mapping.
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 */
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 */
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void page_mapping_insert(as_t *as, __address page, __address frame, int flags)
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void page_mapping_insert(as_t *as, __address page, __address frame, int flags)
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    ASSERT(page_mapping_operations->mapping_insert);
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    ASSERT(page_mapping_operations->mapping_insert);
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    page_mapping_operations->mapping_insert(as, page, frame, flags);
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    page_mapping_operations->mapping_insert(as, page, frame, flags);
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}
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}
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/** Remove mapping of page.
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 *
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 * Remove any mapping of 'page' within address space 'as'.
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 * TLB shootdown should follow in order to make effects of
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 * this call visible.
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 *
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 * The address space must be locked and interrupts must be disabled.
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 *
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 * @param as Address space to wich page belongs.
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 * @param page Virtual address of the page to be demapped.
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 */
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void page_mapping_remove(as_t *as, __address page)
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{
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    ASSERT(page_mapping_operations);
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    ASSERT(page_mapping_operations->mapping_remove);
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    page_mapping_operations->mapping_remove(as, page);
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}
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/** Find mapping for virtual page
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/** Find mapping for virtual page
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 *
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 *
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 * Find mapping for virtual page.
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 * Find mapping for virtual page.
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 *
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 *
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 * The address space must be locked and interrupts must be disabled.
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 * The address space must be locked and interrupts must be disabled.