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From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     joeyli <jlee@suse.com>
Cc:     Ard Biesheuvel <ardb@kernel.org>,
        linux-efi <linux-efi@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 1/2] efi: Disable runtime services on RT
Message-ID: <20211020062850.3wvw7lqauh6pzfd2@linutronix.de>
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On 2021-10-20 14:09:55 [+0800], joeyli wrote:
> On Tue, Sep 28, 2021 at 04:24:34PM +0200, Sebastian Andrzej Siewior wrote:
> > On 2021-09-28 15:34:47 [+0200], Ard Biesheuvel wrote:
> > > Are you sure you want to disable EFI runtime services on all x86
> > > systems with PREEMPT_RT as well?
> > 
> > The only problem that I am aware of is that you need to reboot with
> > enabled runtime service (via bootargs, #2) in order to alter boot loader
> > settings.
> 
> Just provide another case:
> Anyone who uses mokutil for enrolling MOK will also need reboot with
> efi=runtime first.

I have no idea what it does. This enrolling is only required once
per-lifetime and not on each system boot, right?

> Joey Lee

Sebastian