Kernel upgrade

[jacobweinstock]

Description

Upgrades kernel to 5.15

Why is this needed

Fixes: #

How Has This Been Tested?

How are existing users impacted? What migration steps/scripts do we need?

Checklist:

I have:

• updated the documentation and/or roadmap (if required)
• added unit or e2e tests
• provided instructions on how to upgrade

[chrisdoherty4]

@jacobweinstock Is this ready to be reviewed?

[jacobweinstock]

@jacobweinstock Is this ready to be reviewed?

Not quite. I have a few things left to work out around the release process and migrating kernel settings from 5.10.

[nmaiti]

@jacobweinstock are you working on this pr? Need the upgrade of kernel.

[jacobweinstock]

@jacobweinstock are you working on this pr? Need the upgrade of kernel.

Hey @nmaiti. Yes, still working on this.

[Ram-srini]

@jacobweinstock Could you please share the BKM to upgrade kernel in hook OS, so that it will community to do future kernel upgrades.

[jacobweinstock]

Hey @Ram-srini. Apologies, i dont know what a "BKM" is. The high level for how to upgrade the kernel in Hook is to follow the linuxkit instructions and add/validate any previous kernel config.

https://github.com/tinkerbell/hook/blob/main/kernel/README.md
https://github.com/linuxkit/linuxkit/blob/master/docs/kernels.md

[jacobweinstock]

The kernel upgrade is/will be handled in #205