title: Where _PAGE_OFFSET value in Linux Kernel source defined
body: <p>From my linker file of linux kernel(vmlinux.lds) I came to know the value of _PAGE_OFFSET is 0xc0000000 but for some reasons I would to like change this value but coun't find out which macro this value is coming from.</p>
  
  <p>So I would like from which file is this value of _PAGE_OFFSET coming from . </p>