[systemd-devel] version bump of minimal kernel version supported by systemd?

[Zbigniew Jędrzejewski-Szmek]

On Wed, Mar 23, 2022 at 09:26:05AM +0100, Greg KH wrote:
> On Wed, Mar 23, 2022 at 09:17:36AM +0100, Zbigniew Jędrzejewski-Szmek wrote:
> > On Wed, Mar 23, 2022 at 08:07:48AM +0100, Greg KH wrote:
> > > On Tue, Mar 22, 2022 at 05:27:07PM +0100, Zbigniew Jędrzejewski-Szmek wrote:
> > > > Hi all,
> > > > 
> > > > we are considering dropping upstream support for kernel versions < 4.4.
> > > > Would this be a problem for anyone? (*).
> > > 
> > > Given that upstream (i.e. kernel.org) has dropped support for kernel
> > > 4.4, why not just move to not supporting kernels older than 4.9?
> > 
> > It seems Civil Infrastructure Platform (a project under the Linux
> > Foundation) still uses 4.4 [1].
> 
> Yes, but they are not going to be updating to a newer version of
> systemd, right?
> 
> And they are going to be "supporting" that for 20+ years.  If they want
> to do something crazy like this, make them handle supporting code that
> is older than 6+ years to start with.  That's not the community's issue,
> that's the companies that demand such crazy requirement's issue.

That's why I (we) asked the question on the list. If people are compling
systemd on such old systems, or even older, we want to know about it.

> > In the Debian world, Stretch which has EOL scheduled for June 2022 has 4.9,
> > and after that Buster has 4.19.
> 
> 4.9 is fine, and is supported by kernel.org until next year as seen
> here:
> 	https://kernel.org/category/releases.html
> 
> I wrote "4.9" above, not "4.19" :)

Yep. I'd vote for bumping to 4.9, unless some other voices pop up.

Zbyszek