Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Thu, 7 Jan 2021 07:32:44 -0800
From:   "Paul E. McKenney" <paulmck@kernel.org>
To:     Peter Zijlstra <peterz@infradead.org>
Cc:     Yury Norov <yury.norov@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        kernel-team@fb.com, Paul Gortmaker <paul.gortmaker@windriver.com>
Subject: Re: [PATCH RFC cpumask 4/5] cpumask: Add "last" alias for cpu list
 specifications
Message-ID: <20210107153244.GL2743@paulmck-ThinkPad-P72>
Reply-To: paulmck@kernel.org
References: <20210106004850.GA11682@paulmck-ThinkPad-P72>
 <20210106004956.11961-4-paulmck@kernel.org>
 <X/WHk1hY3cmMAXQz@hirez.programming.kicks-ass.net>
 <CAAH8bW9jfSeYe+d6feQUTKuqwKr_U0aCGPZEiBh6Hp=KT2iPrA@mail.gmail.com>
 <X/cYR474/PiTvjfC@hirez.programming.kicks-ass.net>
 <20210107144757.GK2743@paulmck-ThinkPad-P72>
 <X/ch3gaCCRMT/Cxw@hirez.programming.kicks-ass.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <X/ch3gaCCRMT/Cxw@hirez.programming.kicks-ass.net>
User-Agent: Mutt/1.9.4 (2018-02-28)
Precedence: bulk

On Thu, Jan 07, 2021 at 03:59:42PM +0100, Peter Zijlstra wrote:
> On Thu, Jan 07, 2021 at 06:47:57AM -0800, Paul E. McKenney wrote:
> > > I don't really see the use of the ranges thing, CPU enumeration just
> > > isn't sane like that. Also, I should really add that randomization pass
> > > to the CPU enumeration :-)
> > 
> > Please don't!!!
> 
> Why not, the BIOS more or less already does that on a per machine basis
> anyway. Doing it per boot just makes things more reliably screwy ;-)

Fixing BIOS would be much more productive, now wouldn't it?

							Thanx, Paul