RE: rebuild 2.4.21-20 kernel - can I use config from 2.4.21-15 ?

["Molina, Thomas" <thomas molina ngc com>]

> RHEL U3 comes with kernel 2.4.21-20
> 
> I always need to rebuild my own kernel for each new release because I 
> need some extra drivers in it, which I prefer compiled-in.
> 
> Now this new kernel includes some extra features, like 
> ExecShield support.
> 
> Can I use the .config file from my previous kernel build or are there 
> new kernel config options which I need to activate?

Yes, you can copy in your "old" .config and use it as a starting point.  cd into the source directory, do a "make mrproper" to clean things out, copy in your .config, and do a "make oldconfig".  That will cycle through your existing configuration and ask specifically about any "new" options not covered by the old .config.  I usually follow that up with a make menuconfig to do a once-over for the compile options I like to double check.