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From:   John Ogness <john.ogness@linutronix.de>
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To:     Michael Thalmeier <michael.thalmeier@hale.at>,
        Petr Mladek <pmladek@suse.com>
Cc:     Vincent Whitchurch <vincent.whitchurch@axis.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jiri Slaby <jirislaby@kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] tty: ttynull: implement console write
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References: <20230214115921.399608-1-michael.thalmeier@hale.at>
 <Y+zEAA1hp+3guGxT@axis.com> <Y+ztReOGJwAbpv52@alley>
 <1831554214.546921.1676479103702.JavaMail.zimbra@hale.at>
Date:   Wed, 15 Feb 2023 23:17:58 +0106
Message-ID: <878rgy37f5.fsf@jogness.linutronix.de>
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On 2023-02-15, Michael Thalmeier <michael.thalmeier@hale.at> wrote:
> You are right. I have encountered this problem with the RT-patchset.
> We currently are using the latest v5.15-rt kernel which had this
> problem.

The 5.15-rt kernel is based on an implementation of printk that has
since been abandoned. I will provide a patch for 5.15-rt to fix this
issue.

The new printk implementation is currently being finalized for inclusion
in the latest PREEMPT_RT-development version and for submission to
mainline.

John Ogness