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Date:   Mon, 14 Feb 2022 13:24:03 +0100
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From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     Andy Lutomirski <luto@kernel.org>
Cc:     linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org,
        Ben Segall <bsegall@google.com>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Ingo Molnar <mingo@redhat.com>,
        Juri Lelli <juri.lelli@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Vincent Guittot <vincent.guittot@linaro.org>
Subject: Re: [PATCH 7/8] kernel/fork: Only cache the VMAP stack in
 finish_task_switch().
Message-ID: <YgpJ41q35k+KCsk4@linutronix.de>
References: <20220125152652.1963111-1-bigeasy@linutronix.de>
 <20220125152652.1963111-8-bigeasy@linutronix.de>
 <00f9c7a6-2d1d-f871-e9bc-00e2217f40f9@kernel.org>
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On 2022-02-14 13:10:06 [+0100], To Andy Lutomirski wrote:
> 
> I think I could use the first few bytes of the stack as a RCU-head. Let
> me try that.

task::stack_vm_area and ::stack. Now I remember why I went for that bit.
But I do have (hopefully) a better idea now.

> > --Andy

Sebastian