How to compile kernel module for a new kernel before reboot?

[Andrew Junev]

Hello Kwan,

Saturday, April 3, 2010, 11:57:04 PM, you wrote:

>> How do I compile my driver for a new kernel _before_ actually booting
>> into that new kernel, so that I could be prepared with the new kernel
>> module already on first reboot?

> Depending on your source tree there are a few different ways. Most
> kernel module sources will use 'uname -r' to find the path to the
> kernel source tree. You may need to set a variable explicitly.  For
> example, I grabbed a vt6656 build from git and saw in the mk.sh
> script:

> KDIR="/lib/modules/`uname -r`/build"

> You can try passing the kernel version you want to build instead of
> running uname.

Ok, I see. So there's no "common" method to do this, right? It may
differ from module to module...

Initially I thought that's a really simple task... And now it doesn't
seem to be like that, especially for those who use multiple custom
kernel modules...

Ok, thanks a lot!
I'll try it first, while starting to read about DKMS... Anyway, I'm
curious to do it the right way.

-- 
Best regards,
 Andrew