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From:   Thomas Gleixner <tglx@linutronix.de>
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To:     Pingfan Liu <kernelfans@gmail.com>, linux-kernel@vger.kernel.org
Cc:     Pingfan Liu <kernelfans@gmail.com>,
        Eric Biederman <ebiederm@xmission.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Valentin Schneider <valentin.schneider@arm.com>,
        Vincent Donnefort <vincent.donnefort@arm.com>,
        Ingo Molnar <mingo@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        YueHaibing <yuehaibing@huawei.com>,
        Baokun Li <libaokun1@huawei.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        Baoquan He <bhe@redhat.com>, kexec@lists.infradead.org
Subject: Re: [PATCHv3 1/2] cpu/hotplug: Keep cpu hotplug disabled until the
 rebooting cpu is stable
In-Reply-To: <87ee13rn52.ffs@tglx>
References: <20220509041305.15056-1-kernelfans@gmail.com>
 <20220509041305.15056-2-kernelfans@gmail.com> <87ee13rn52.ffs@tglx>
Date:   Mon, 09 May 2022 12:57:59 +0200
Message-ID: <87bkw7rn0o.ffs@tglx>
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X-Mailing-List: linux-kernel@vger.kernel.org

On Mon, May 09 2022 at 12:55, Thomas Gleixner wrote:
> On Mon, May 09 2022 at 12:13, Pingfan Liu wrote:
>> -		cpu_hotplug_enable();
>
> This is tinkering at best. Can we please sit down and rethink this whole
> machinery instead of applying random duct tape to it?

That said, I still have not figured out which real world problem you are
actually trying to solve.

Thanks,

        tglx