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         */
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         */
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        for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
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        for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
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            page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, PAGE_CACHEABLE | PAGE_EXEC);
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            page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, PAGE_CACHEABLE | PAGE_EXEC);
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        }
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        }
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        exc_register(14, "page_fault", page_fault);
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        exc_register(14, "page_fault", (iroutine)page_fault);
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        write_cr3((__address) AS_KERNEL->page_table);
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        write_cr3((__address) AS_KERNEL->page_table);
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    }
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    }
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    else {
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    else {
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        write_cr3((__address) AS_KERNEL->page_table);
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        write_cr3((__address) AS_KERNEL->page_table);
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    }
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    }