How to recompile kernel with some new flags?

English Install/Boot/Login
1

Hi All Experts,

I am quite new to openSuse and linux.
I have to set some parameters in .config file for kdump and kexec functionality and then have to recompile the kernel.
After reboot Linux should come up with the recently compiled kernel.

Please suggest the steps to do these… I am quite stuck :frowning:

-Thanks,
Deepak Kumar

2

On 2014-12-20 10:06, 21deepak3 wrote:
>
> Hi All Experts,
>
> I am quite new to openSuse and linux.
> I have to set some parameters in .config file for kdump and kexec
> functionality and then have to recompile the kernel.

Initial step: make cloneconfig

Then: make menuconfig. Change the name, which should be somewhere under
“General setup”. Maybe “Local version - append to kernel release”. If
you don’t, the new kernel will replace the original distributed kernel,
meaning that if you flunk it, you have an unbootable system.

Then change your things.

For each cycle:

(change your things)

make --jobs=4⁽¹⁾
make modules_install
make install

Make sure you read “/usr/share/doc/packages/kernel-source/README.SUSE”

(1) The number is the number of parallel jobs, ie, the number of cpu
cores or less. If you wish.

–
Cheers / Saludos,

Carlos E. R.
(from 13.1 x86_64 “Bottle” at Telcontar)

3

Hi Carlos,

Thanks a lot for the information.

I have basically performed the following step:

  1. go to /usr/src/linux
  2. Then make menuconfig and do the configuration.
  3. then “make all”
  4. Now i can see vmlinux is generated at /usr/src/linux and bzImage is generated at arch/x86/boot

Now could you please suggest what all steps to do next??

-Thansk and Regards,
Deepak K.

4

On 2014-12-22 07:46, 21deepak3 wrote:
>
> Hi Carlos,
>
> Thanks a lot for the information.
>
>
> I have basically performed the following step:
>
>
> 1. go to /usr/src/linux
> 2. Then make menuconfig and do the configuration.

No, before that you have to run “make cloneconfig”. Once, the first time.

And you also have to change its name in the menu.

> 3. then “make all”
> 4. Now i can see vmlinux is generated at /usr/src/linux and bzImage is
> generated at arch/x86/boot
>
> Now could you please suggest what all steps to do next??

I already said how to do it… if you change the steps I told you, I’d
have to read the documentation again and find out, so better you go and
read it :slight_smile:

–
Cheers / Saludos,

Carlos E. R.
(from 13.1 x86_64 “Bottle” at Telcontar)

5

Thansk Carlos, for your kind support. I am able to successfully compile the kernel :slight_smile: