Can somebody please explains to me about the kernel patching process.

I get to number 5 of the instruction where it needs me to copy my existing configuration.

  1. Copy your existing configuration. I don't remember the exact filename of the existing config but it's in /boot. Use tab-complete or a file browser to get the file name and replace "config-file" with this name below.

I have zero ideas about what it is and why I am doing this. What is the configuration I need to look at? There is no .config file there.

And what is this?

Add acpi_enforce_resources=lax to your kernel command line and reboot. The controller should now show up.

What is it? Where to add it? Is this process supposed to be after the kernel patching?

It seems like everyone in here is mastering Linux kernel patching, just fixing here and there. Right?