From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 95B89C43603 for ; Mon, 9 Dec 2019 06:25:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 744A9206D3 for ; Mon, 9 Dec 2019 06:25:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727089AbfLIGZn (ORCPT ); Mon, 9 Dec 2019 01:25:43 -0500 Received: from mx2.suse.de ([195.135.220.15]:52388 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726165AbfLIGZn (ORCPT ); Mon, 9 Dec 2019 01:25:43 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 5493CAFAE; Mon, 9 Dec 2019 06:25:41 +0000 (UTC) Subject: Re: [PATCH v2 10/14] driver: xen: Replace cpu_up/down with device_online/offline To: Qais Yousef , Thomas Gleixner , Greg Kroah-Hartman Cc: Boris Ostrovsky , Stefano Stabellini , xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org References: <20191125112754.25223-1-qais.yousef@arm.com> <20191125112754.25223-11-qais.yousef@arm.com> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: Date: Mon, 9 Dec 2019 07:25:39 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.1 MIME-Version: 1.0 In-Reply-To: <20191125112754.25223-11-qais.yousef@arm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 25.11.19 12:27, Qais Yousef wrote: > The core device API performs extra housekeeping bits that are missing > from directly calling cpu_up/down. > > See commit a6717c01ddc2 ("powerpc/rtas: use device model APIs and > serialization during LPM") for an example description of what might go > wrong. > > This also prepares to make cpu_up/down a private interface for anything > but the cpu subsystem. > > Signed-off-by: Qais Yousef Reviewed-by: Juergen Gross Juergen