How does the linux kernel manage less than 1GB physical memory?

Question

I\'m learning the linux kernel internals and while reading \"Understanding Linux Kernel\", quite a few memory related questions struck me. One of them is, how the Linux kern

Answer 1

If the physical memory is less than 896 MB then the linux kernel maps upto that physical address lineraly.

For details see this.. http://learnlinuxconcepts.blogspot.in/2014/02/linux-addressing.html