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void map_page_to_frame(__address page, __address frame, int flags, __address root)
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void map_page_to_frame(__address page, __address frame, int flags, __address root)
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{
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{
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    pte_t *ptl0, *ptl1, *ptl2, *ptl3;
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    pte_t *ptl0, *ptl1, *ptl2, *ptl3;
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    __address newpt;
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    __address newpt;
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//  ptl0 = (pte_t *) PA2KA(root ? root : (__address) GET_PTL0_ADDRESS());
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    ptl0 = (pte_t *) PA2KA(root ? root : (__address) GET_PTL0_ADDRESS());
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    if (GET_PTL1_FLAGS(ptl0, PTL0_INDEX(page)) & PAGE_NOT_PRESENT) {
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    if (GET_PTL1_FLAGS(ptl0, PTL0_INDEX(page)) & PAGE_NOT_PRESENT) {
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        newpt = frame_alloc(FRAME_KA);
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        newpt = frame_alloc(FRAME_KA);
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        memsetb(newpt, PAGE_SIZE, 0);
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        memsetb(newpt, PAGE_SIZE, 0);
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        SET_PTL1_ADDRESS(ptl0, PTL0_INDEX(page), KA2PA(newpt));
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        SET_PTL1_ADDRESS(ptl0, PTL0_INDEX(page), KA2PA(newpt));