How to switch between installed kernel and developed kernel

[Ahmad Fatoum]

Hello Gidi,

On 22.03.21 13:11, Gidi Gal wrote:
> Hello,
> 
> I am new to kernel development, currently working on
> https://kernelnewbies.org/FirstKernelPatch. I reached the step "Install
> your changes" in "Modifying a driver on native Linux". I would like to
> separate my developed kernel and my installed kernel and to switch between
> the two in order to test my changes. I am not sure that my tutorial
> explains how to do that. If you have a link that proposes a workflow for
> this request (or if my tutorial does explain this workflow and I'm missing
> the exact paragraph that does that) please let me know.

I've found running a kernel under qemu with my normal rootfs to be quite
useful to quickly try out things. See the qemu-test script in the RAUC project
for an example: https://github.com/rauc/rauc/blob/master/qemu-test

Don't forget to backup of course. Maybe you could even read-only mount
the rootfs for added safety.

Good luck,
Ahmad

> 
> Thanks,
> Gidi
> 
> 
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> Kernelnewbies at kernelnewbies.org
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