You can copy .config from your kernel top source directory to a safe backup
location. Then copy it back in after "make distclean", or after switching
to a new kernel. Then you can "make oldconfig" and the settings you had
will be picked back up. Any settings within a new kernel would still be
p
All you need to do after saving your configuration there will be .config
generated
you need to copy that .config to arch/arm/configs/*somename_defconfig*
then next time use your *somename_defconfig* for configuring kernel i.e
like #make ARCH=arm *somename_defconfig*
if you do this new .config file
