[systemd-devel] [PATCH resend] getty-generator: Enable getty on all active serial consoles.

[Jan Engelhardt]

On Tuesday 2013-09-10 17:41, Lennart Poettering wrote:
>On Wed, 28.08.13 13:12, Michael Marineau (michael.marineau at coreos.com) wrote:
>
>> This enables a getty on active kernel consoles even when they are not
>> the last one specified on the kernel command line and mapped to
>> /dev/console. Now the order "console=ttyS0 console=tty0" works in
>> addition to "console=tty0 console=ttyS0".
>
>The kernel already makes a distinction between the
>primary console, and all others (the latter only receive logs, but you
>cannot read from them via /dev/console iirc), and so we propagated that
>distinction into systemd, too.
>
>I can totally see that this is confusing though, as nobody remembers the
>right ordering... 

Though console= just follows the standard principle of "later values
override earlier ones", if nobody can remember the ordering, perhaps
the kernel should be taught a suboption to explicitly specify the
primary console. Think

  console.primary=ttyS0 console=tty0
  console=tty0 console.primary=ttyS0