linux-kernel - Re: [PATCH v2] cpu/hotplug: Do not bail-out in DYING/STARTING sections

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Message-ID: <20220525165248.GI2578@worktop.programming.kicks-ass.net>
Date:   Wed, 25 May 2022 18:52:48 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Vincent Donnefort <vdonnefort@...gle.com>
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org,
        vschneid@...hat.com, kernel-team@...roid.com,
        Derek Dolney <z23@...teo.net>
Subject: Re: [PATCH v2] cpu/hotplug: Do not bail-out in DYING/STARTING
 sections

On Mon, May 23, 2022 at 05:05:36PM +0100, Vincent Donnefort wrote:
> The DYING/STARTING callbacks are not expected to fail. However, as reported
> by Derek, drivers such as tboot are still free to return errors within
> those sections. In that case, there's nothing the hotplug machinery can do,
> so let's just proceed and log the failures.
> 

I'm confused. Why isn't this a driver bug?