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ETF
n00b
Joined: 11 Jan 2022
Posts: 3
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 Posted: Tue Jan 11, 2022 6:40 pm Post subject: Minimal kernel config for QEMU guest |
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Hello everyone,
What is the best way to generate a minimal kernel config for Gentoo QEMU guest? I need it to reduce compile times and make good starting point for further experimenting.
I have found this repository but I do not think that
make defconfig and make kvm_guest.config commands generate minimal kernel config. It is almost same as the official wiki: https://wiki.gentoo.org/wiki/QEMU/Linux_guest
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Tue Jan 11, 2022 7:14 pm Post subject: |
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If
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I need it to reduce compile times
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Then use the binary kernel gentoo-kernel-bin for the Gentoo guest.
But if
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make good starting point for further experimenting
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then you neeed to compile it yoursel.
Compiling inside VM is not very enjoyable.
Bare metal is much better.
So i wouldnt worry so much for the kernel in a Gentoo VM,but rather if iam installing the "real thing" in my machine.
You can try with make defconfig but surely you will end up with an unbootable kernel or a kernel wuth missing functionality, unless you are very lucky and/or add more config to it.
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ETF
n00b
Joined: 11 Jan 2022
Posts: 3
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| Posted: Tue Jan 11, 2022 7:20 pm Post subject: |
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| In that case, I will compile kernel on my Arch box first and then somehow copy it to the quest machine. That should cut down compile times. |
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alamahant
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Joined: 23 Mar 2019
Posts: 3879
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| Posted: Tue Jan 11, 2022 7:22 pm Post subject: |
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No need to do that.
Just emerge
gentoo-kernel-bin
from inside your Gentoo VM.
The above package is a full pre-compiled kernel like Arch's
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ETF
n00b
Joined: 11 Jan 2022
Posts: 3
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| Posted: Tue Jan 11, 2022 7:26 pm Post subject: |
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Great!
Thank you!  |
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