Linux kernel 6.1 or 6.6 for OpenWrt 24.x release?

[Robert Marko]

On Sat, 3 Feb 2024 at 13:06, Hauke Mehrtens <hauke at hauke-m.de> wrote:
>
> Hi,
>
> I track the status of the Linux kernel 6.1 migration in this github
> issue: https://github.com/openwrt/openwrt/issues/14546
>
> There are still many targets on kernel 5.15 without testing support for
> kernel 6.1 in OpenWrt master. I assume that we need at least 4 months to
> get everything to 6.1 and more or less stable. Kernel 6.1 support is
> also missing for some important targets like lantiq, realtek and ramips.
>
>
> Which kernel should we use for the next major OpenWrt release?
> We have two options and I would like to get some feedback on these:
>
> 1. Do the OpenWrt 24.X release with kernel 6.1. Branch off when all or
> most of the targets are on kernel 6.1 by default.
> 2. Do the OpenWrt 24.X release with kernel 6.6. Branch off when all or
> most of the targets are on kernel 6.6 by default. Do not do any stable
> OpenWrt release which supports kernel 6.1.
>
> Doing a OpenWrt release with multiple kernels cases too much maintenance
> effort from my point of view based on previews experience.
>
>
> I think with kernel 6.1 we can branch off at around May 2024. With
> kernel 6.6 we could probably branch off around September 2024. The final
> release will be out about 2 to 4 months later.
>
> Currently OpenWrt releases are about 1.5 years behind the Linux LTS
> releases. When we use kernel 6.1 for the next release we will continue
> to stay 1.5 years behind. When we switch to kernel 6.6 and do not do any
> release with kernel 6.1 we will probably only stay 10 months behind
> Linux LTS kernels.
>
> There is already a PR requiring kernel 6.6:
> https://github.com/openwrt/openwrt/pull/14357
>
>
> Currently I would prefer to use kernel 6.6 to get closer to the recent
> Linux LTS releases.

Hi Hauke,
I would like to see 6.6 as soon as possible since 6.1 is getting quite old
at this point and is requiring more and more backporting for any new work.
We should also really push to move all of the targets onto 6.1.

Regards,
Robert

>
> Hauke
>
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