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        /*
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        /*
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         * PA2KA(identity) mapping for all frames.
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         * PA2KA(identity) mapping for all frames.
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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(PA2KA(cur), cur, PAGE_CACHEABLE | PAGE_EXEC, KA2PA(dba));
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            page_mapping_insert(PA2KA(cur), 0, cur, PAGE_CACHEABLE | PAGE_EXEC, KA2PA(dba));
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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", page_fault);
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        write_cr3(KA2PA(dba));
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        write_cr3(KA2PA(dba));
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    }
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    }