From: Jim Green [mailto:email@example.com]
Sent: Wed 12/7/2011 02:50
> Just to be sure: you do know about make oldconfig, right?
I heard about it but never used before, I only used menuconfig.
does that mean my .config would always work for newer kernels?
I think I'll dig on make oldconfig.
Yes, you only need to copy your old config to the kernel source.
# cp /boot/config-$(uname -r) /path/to/kernelsrc/.config
make oldconfig only ask you about the new stuff and if you chose the question mark you'll get information about the new options.
If you'll add some changes you also don't need to use a menu, you can echo the changes before you run make oldconfig.
# echo "CONFIG_MK8=y" >> /path/to/kernelsrc/.config