linux-kernel - Re: [ANNOUNCE] v5.14-rc4-rt4

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Message-ID: <20210804155747.cwayhjsdjc4zaubd@linutronix.de>
Date:   Wed, 4 Aug 2021 17:57:47 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Daniel Wagner <wagi@...om.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v5.14-rc4-rt4

On 2021-08-04 09:49:48 [-0600], Jens Axboe wrote:
> 
> That'd work on non-RT as well, but it makes it worse on non-RT as well with
> the irq enable/disable dance. While that's not the end of the world, would
> be nice to have a solution that doesn't sacrifice anything, yet doesn't
> make RT unhappy.

There were plans to make local_irq_disable() mostly a nop (similar to
what ppc64 does). But I have no idea what happened. I hope that work
gets picked up.

Sebastian