[systemd-devel] [PATCH] Drop the udev firmware loader

Lennart Poettering lennart at poettering.net
Sat May 31 22:45:17 PDT 2014

On Fri, 30.05.14 04:32, Michael Biebl (mbiebl at gmail.com) wrote:

> 2014-05-30 4:26 GMT+02:00 Greg KH <gregkh at linuxfoundation.org>:
> > You update systemd but you don't update the kernel?  How does that make
> > any sense?
> There might be very valid reasons why you need to stick with the old
> kernel. As said, one example could be that the new one simply doesn't
> boot. Requiring lock-step upgrades makes the system less
> fault-tolerant.
> So where possible this should be avoided.

To make this clear, we expect that systemd and kernels are updated in
lockstep. We explicitly do not support really old kernels with really
new systemd. So far we had the focus to support up to 2y old kernels
(which means 3.4 right now), but even that should be taken with a grain
of salt, as we already made clear that soon after kdbus is merged into
the kernel we'll probably make a hard requirement on it from the systemd

I am tempted to say that we should merge the firmware loader removal
patch at the same time as the kdbus requirement is made. As that would
be a clean cut anyway...

Also note that at that point we intend to move udev onto kdbus as
transport, and get rid of the userspace-to-userspace netlink-based
tranport udev used so far. Unless the systemd-haters prepare another
kdbus userspace until then this will effectively also mean that we will
not support non-systemd systems with udev anymore starting at that
point. Gentoo folks, this is your wakeup call.


Lennart Poettering, Red Hat

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