From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753436AbeCTMhk (ORCPT ); Tue, 20 Mar 2018 08:37:40 -0400 Received: from merlin.infradead.org ([205.233.59.134]:35370 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753248AbeCTMha (ORCPT ); Tue, 20 Mar 2018 08:37:30 -0400 Date: Tue, 20 Mar 2018 13:37:12 +0100 From: Peter Zijlstra To: Dou Liyang Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, corbet@lwn.net, rjw@rjwysocki.net, lenb@kernel.org, hpa@zytor.com Subject: Re: [PATCH 1/5] x86/smpboot: Add the missing description of possible_cpus Message-ID: <20180320123712.GR4043@hirez.programming.kicks-ass.net> References: <20180320110432.28127-1-douly.fnst@cn.fujitsu.com> <20180320110432.28127-2-douly.fnst@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180320110432.28127-2-douly.fnst@cn.fujitsu.com> User-Agent: Mutt/1.9.3 (2018-01-21) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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?