linux-kernel - Re: [PATCH 1/5] x86/smpboot: Add the missing description of possible

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Message-ID: <20180320123712.GR4043@hirez.programming.kicks-ass.net>
Date:   Tue, 20 Mar 2018 13:37:12 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Dou Liyang <douly.fnst@...fujitsu.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        linux-acpi@...r.kernel.org, linux-doc@...r.kernel.org,
        tglx@...utronix.de, mingo@...hat.com, corbet@....net,
        rjw@...ysocki.net, lenb@...nel.org, hpa@...or.com
Subject: Re: [PATCH 1/5] x86/smpboot: Add the missing description of
 possible_cpus

On Tue, Mar 20, 2018 at 07:04:28PM +0800, Dou Liyang wrote:

> +	possible_cpus=	[s390,x86_64] Use this to set hotpluggable cpus.
> +			This option sets possible_cpus bits in cpu_possible_map.
> +			Thus keeping the numbers of bits set constant even if
> +			the machine gets rebooted.

That description, esp. the last sentence, doesn't make any kind of sense
to me. What?