Chapter 6: Upgrading a Kernel
Inevitably it happens: you have a custom-built kernel, working just wonderfully except for one little thing that you know is fixed in the latest release from the kernel developers. Or a security problem is found, and a new stable kernel release is made public. Either way, you are faced with the issue of upgrading the kernel and you do not want to lose all the time and effort that went into making that perfect kernel configuration.
This chapter is going to show how easy it is to update a kernel from an older versions, while still retaining all of the configuration options from the previous one.