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A computer has 32-bit virtual addresses and 4-KB pages. The program and data together fit in the lowest page (0–4095) The stack fits in the highest page.
1.How many entries are needed in the page table if traditional (one-level) paging is used?
2.How many page table entries are needed for two-level paging, with 10 bits in each part?

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Martebi

The numbers of entries needed is that:

  • For a one-level page table, one needs  232/212 or 1M pages needed.  Note that the page table must have 1M entries.

Can I run a 32-bit virtual machine using a 64-bit OS?

Others are:

  • For two-level paging, the main page table must have 1K entries, each have to points to a second page table. Note that only two of these are to be used.

Therefore, in full, only three page table entries are said to be needed, where one in the top-level table and another in each of the lower-level tables.

Note that one can install a 32-bit virtual machine in 64-bit Windows 10 system as it is very possible as long as the processor aids Virtualization Technology (VT).

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