Reason for page sizes be powers of 2 always
Why are always page sizes powers of 2?
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Recall that paging is implemented through breaking up an address into a page & offset number. It is most capable to break the address into X page bits and Y offset bits, instead of perform arithmetic on the address to compute the page number and offset. Because each of bit position represents a power of 2, splitting an address among bits results in a page size which is a power of 2.
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