Kernel 5.10 on Ubuntu 20.04 (or later) (for T2 Apple hardware)

[Will McGinnis]

Hi Krzysztof, Thanks so much for the response.

The Linux on the T2 project issmall (but dedicated!) so out of ease of
maintenance, across all distros, only a few kernel versions have been
chosen to test the patches for the T2 Apple hardware.
>From the T2 Linux main page: "versions 5.7.19 and 5.11.x, which reached end
of life as well as the stable 5.10.x, which will be supported by the Linux
maintainers until December 2026.

The purpose/need/goal for using 5.10 would be for my own use but also for
other users of the T2 Linux patches with Ubuntu, anyone that wants to.

I definitely see the value in building on the work of the existing Ubuntu
kernels whenever possible rather than getting plain vanilla kernel sources,
so if there's a sanctioned way to get 5.10.x I would prefer that (for my
own use and to recommend to others, once I get it working and test it for a
bit)


My interest in the OEM kernel is only because it says the specific 5.10.x
kernel version that I'm looking for. If the regular linux image generic was
5.10.x then I would be fine using that. But I am reaching out since it's
not clear what the best way is to get both 5.10.x and the Ubuntu kernel
team patches together.

On Wed, May 26, 2021 at 10:57 AM Krzysztof Kozlowski <
krzysztof.kozlowski at canonical.com> wrote:

> On 24/05/2021 20:06, Will McGinnis wrote:
> > Hi all, there is a particular need for the Linux kernel version 5.10 as
> > that kernel LTS release has been chosen by the T2 Apple hardware Linux
> > maintainers.
> >
> > I wanted to check in about what the most approved Ubuntu way to get
> > kernel version 5.10 would be on Ubuntu 20.04 and later, getting the
> > benefit of the LTS release with the kernel team including the Ubuntu
> > patches.
>
> Hi,
>
> Can you describe more what you mean by "to get kernel version 5.10"?
> What is the purpose/need/goal? For using it on your machine? For
> development a derivative? For an OEM-like project? For giving it to
> other customers/people?
>
> >
> > I see there are linux-image-5.10.0-xxxx-oem packages:
> > https://packages.ubuntu.com/focal/linux-image-5.10.0-1026-oem
> > <https://packages.ubuntu.com/focal/linux-image-5.10.0-1026-oem>
> The OEM kernel is specifically for use in OEM projects, so maybe this
> matches your need (but depends on answer above). There are several
> differences in Ubuntu OEM kernel like new drivers, new features and
> temporary workarounds.
>
> If OEM kernel is run on hardware that is not certified by Canonical, we
> cannot guarantee it works without issues, but there is nothing added
> that we think will break other hardware.
>
> Best regards,
> Krzysztof
>
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