title: Getting location of psychical address via virtual address
body: <p>I am using kernel debugger to and wanted to know the page frame in psychical ram  of virtual address.
  for example I have the following <code>0xfffff12345678911</code>(just example).
  I have executed the following command <code>!pte 0xfffff12345678911</code> and in the results,
  I get the data of PTE VA at <code>0xfffff22233378911</code> contains &quot;<code>0000000000000000</code>&quot;
  why i get zero ?
  The addresses are just example</p>