From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=Q+aa=S3=vger.kernel.org=linux-kernel-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT
	autolearn=ham autolearn_force=no version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id 28928C10F03
	for <linux-kernel@archiver.kernel.org>; Thu, 25 Apr 2019 09:41:57 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id F2AB12084F
	for <linux-kernel@archiver.kernel.org>; Thu, 25 Apr 2019 09:41:56 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1728685AbfDYJlz (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Thu, 25 Apr 2019 05:41:55 -0400
Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:38982 "EHLO
        foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1726439AbfDYJlz (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 25 Apr 2019 05:41:55 -0400
Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249])
        by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 286C5374;
        Thu, 25 Apr 2019 02:41:55 -0700 (PDT)
Received: from e107155-lin (e107155-lin.cambridge.arm.com [10.1.196.42])
        by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 24A343F5AF;
        Thu, 25 Apr 2019 02:41:52 -0700 (PDT)
Date:   Thu, 25 Apr 2019 10:41:47 +0100
From:   Sudeep Holla <sudeep.holla@arm.com>
To:     Atish Patra <atish.patra@wdc.com>
Cc:     linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Andreas Schwab <schwab@suse.de>,
        Anup Patel <anup@brainfault.org>,
        Johan Hovold <johan@kernel.org>,
        linux-riscv@lists.infradead.org,
        Palmer Dabbelt <palmer@sifive.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Damien Le Moal <Damien.LeMoal@wdc.com>
Subject: Re: [PATCH 2/4] RISC-V: Implement nosmp commandline option.
Message-ID: <20190425094147.GA6585@e107155-lin>
References: <20190424214801.18880-1-atish.patra@wdc.com>
 <20190424214801.18880-3-atish.patra@wdc.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190424214801.18880-3-atish.patra@wdc.com>
User-Agent: Mutt/1.9.4 (2018-02-28)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, Apr 24, 2019 at 02:47:59PM -0700, Atish Patra wrote:
> nosmp command line option sets max_cpus to zero. No secondary harts
> will boot if this is enabled. But present cpu mask will still point to
> all possible masks.
>
> Fix present cpu mask for nosmp usecase.
>
> Signed-off-by: Atish Patra <atish.patra@wdc.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

I just noticed RISC-V has CONFIG_SMP option configurable. ARM64 has
it always on and no option to disable :)

Anyways, this looks good.

Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>

--
Regards,
Sudeep