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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 D5524C0650E for ; Thu, 4 Jul 2019 05:55:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE1A221882 for ; Thu, 4 Jul 2019 05:55:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ES/LWPfN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727230AbfGDFzc (ORCPT ); Thu, 4 Jul 2019 01:55:32 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:36999 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725879AbfGDFzb (ORCPT ); Thu, 4 Jul 2019 01:55:31 -0400 Received: by mail-pg1-f193.google.com with SMTP id g15so2374468pgi.4; Wed, 03 Jul 2019 22:55:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:organization:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=BX5JDaciana7ktLIahHDZ8Rm/ZU0HX0KyhCu3VI68A8=; b=ES/LWPfND6i8EUl8ALV5oWggRPVLI7ruCB9fs/GvPzxHMIPoN81XcE8xKezsMra/y6 dSwtmhsVOcDEDLA3+63LTMxSlFWvNLIzPEdZZiYtQ3E0aqVn5T5Alw1PRyomomnXkJD6 8TSPx95eZ4q2HFnM+Y18aqUHNumIeDhdJuw7YW81gRweXQIH3ei5iN4365L5rHuTezoO mbv+3O9cU982/pSlPyZrIJGuMZwxmgH2I//jRmEenMlfFtkEaW8stYKYUR7edjVF4Wln rsVaLY8yfmeSuPwncUDuN/KSvjXMeRrokfWjIUtYnBY04EyiTl/bZoKHY9T/rp7ef961 F3RQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:organization :message-id:date:user-agent:mime-version:in-reply-to :content-transfer-encoding; bh=BX5JDaciana7ktLIahHDZ8Rm/ZU0HX0KyhCu3VI68A8=; b=ciZYrl0euWR5Si7HQyo6rI5v/6Bol5RYJy1sxB2a+HxsMiAPmipm2U8xwOQ9Jc7er7 VgHa3r3H5CSRlmmUNsgJj73T35YgFyFuraDk3XCkbem4WpC4NewOfehBrNKvAZI6kTmX zD67SgiDyUa+m7+8+uokdY/qSzIdBoqhFDOcXx//rs3Dxbz333vEPBknjR8cuffPTGeD SkAHrS8/+nuyl2KWKrskoc9pPpxLHwl7Sz1ULrZSFDbwyrbnhO8ZnNK7Ga/KGbhxd7Dl ekJCkHX64rbIL7ISv8yT50HG1vesZG5Yjyu3KvScpsNJqmBrWloYGdujvsAkr8puuikH D8Ww== X-Gm-Message-State: APjAAAX160oIQ66L3ZBOSxrZJnRcPNbmFE7FyaBySe1Mzr7lVhykJtir AggYfdmOoMG5F/Zop+Oh15wOcLht X-Google-Smtp-Source: APXvYqwDEIQv50OOSV4lqbB7mHxRneKKwMjQFsVni/kO8fTksoN52y09PuYbOrKCqczquTT9hKw8LQ== X-Received: by 2002:a63:c508:: with SMTP id f8mr10813454pgd.48.1562219731123; Wed, 03 Jul 2019 22:55:31 -0700 (PDT) Received: from [0.0.0.0] ([80.240.31.150]) by smtp.gmail.com with ESMTPSA id j11sm5792476pfa.2.2019.07.03.22.55.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Jul 2019 22:55:30 -0700 (PDT) Subject: Re: [PATCH RFC 0/3] Support CPU hotplug for ARM64 To: Xiongfeng Wang , rjw@rjwysocki.net, catalin.marinas@arm.com, james.morse@arm.com Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, guohanjun@huawei.com, xiexiuqi@huawei.com, huawei.libin@huawei.com, john.garry@huawei.com, jonathan.cameron@huawei.com References: <1561720392-45907-1-git-send-email-wangxiongfeng2@huawei.com> <2b22cf4d-9646-9f20-41ae-cceb83d9791b@gmail.com> <135ee490-a5a6-46c9-208e-81849b20d6b6@huawei.com> From: Jia He Organization: ARM Message-ID: Date: Thu, 4 Jul 2019 13:55:16 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <135ee490-a5a6-46c9-208e-81849b20d6b6@huawei.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Xiongfeng On 2019/7/4 11:26, Xiongfeng Wang wrote: > Hi Justin, > > On 2019/7/4 11:00, Jia He wrote: >> Hi Xiongfeng >> >> It is a little bit awkful that I am also  investigating acpi based cpu hotplug issue silimar with >> >> your idea. My question is your purpose to implement the vcpu hotplug in arm64 qemu? > Yes, my purpose is to implement the vcpu hotplug in arm64 qemu. So that I can add or remove vcpu > without shutting down the Guest OS. Thanks for the infor, I guess you used GED device in qemu ;-)? --- Cheers, Justin (Jia He)