Linux Kernel patching on RHEL 5 and RHEL 6

Hi ,

I want to know about the kernel patching on RHEL 5 and RHEL 6 on prod servers. I want to know what prechecks I need to do before installing a new kernel. Also i want to know what else packages we need to install with kernel as I heard we need to install some kernel-firmware as well. Could you please guide me on the procedure…