<div dir="ltr">Hi all,<br><br><b>Question: </b><br>When we use 2 level paging(Directory+Table+Offset), does the page table entries have to be put exactly on the beginning of a page frame?<br><br><b>Description: </b><br>The format of Page Directory and Page Table are the same. And they all contain 20 bits as a pointer to the next level entries. <br>
<br>For Page Table entry, I understand that 20 bits is enough because page frames are 4k aligned. But for Page Directory entry, the 20 bits should be the address of a Page Table, that means the physical address of a Page Table entry should be 4k aligned too. And thus they may only exist at the beginning of a page frame.<br>
<br>Is this right or am I missing something?<br><br>Thanks.<br></div>