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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 08E06C433EF for ; Mon, 6 Sep 2021 16:16:54 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 87DFC60FED for ; Mon, 6 Sep 2021 16:16:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 87DFC60FED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:35188 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mNHIi-0002JE-Jr for qemu-devel@archiver.kernel.org; Mon, 06 Sep 2021 12:16:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40184) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNHHU-0001QL-Qy for qemu-devel@nongnu.org; Mon, 06 Sep 2021 12:15:36 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:21413) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNHHQ-0004bj-39 for qemu-devel@nongnu.org; Mon, 06 Sep 2021 12:15:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1630944930; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9o//+xgbWBZU75mGw9CeHU5EKtySdAmjKiKyx/wwURE=; b=SKeMKMvA1x6PALt0HYzLPhO6lRP7gwNZ1wJiIXHVrv6b6QWWujLzMIKokz9gvr75ea16rY 9VTnUCdcb3SC/KWwg+CVX2D9pG1FA52KnGgThA3mB60cuLe0gZzDETd0zTGDj9SYLWbfOg F3FcRoSush7H4N6VDfUW4vNDVdStH5s= Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-222-JbLTAeXeOu-xMnILIYOezg-1; Mon, 06 Sep 2021 12:15:27 -0400 X-MC-Unique: JbLTAeXeOu-xMnILIYOezg-1 Received: by mail-ed1-f71.google.com with SMTP id i17-20020aa7c711000000b003c57b06a2caso3690544edq.20 for ; Mon, 06 Sep 2021 09:15:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=9o//+xgbWBZU75mGw9CeHU5EKtySdAmjKiKyx/wwURE=; b=bStC3+DVRJ+h5FlNd8x8Jk+bolzcbCNMbqvV1//zv3qx5gbdCDel9PXh6WCqkg7A3Y bs0CwP2KLXwpQZaES0SgiGsXXragBzel/p8DkfW3tQsh1pt+6GlurBSAVUudhurMjliw TKHXu8eSNWc582mmlIJRv4E6L2HhlkI2OxXP0lu6tfkXPP8iX193BWrzcSbBDWQLTxDG qm88sUBsFdBKmPdurM81TCAqoiIjBMz5ZaVmPQlGctcCWbOSJJXv407xDvEDnptNVHMS 1KFVYCcjYW4NpnNeLROyKoTvbu+YAqE1aXnCUEFtUockAqtfhX/3ec3gHVxdbSU3UEWt Ahdw== X-Gm-Message-State: AOAM530zYtP4Xv9Q7zasYowhKtZl022IdgUQWXioaSC+HZqcS3TSu/i0 w2rF51smFrHZLf2fL2qvURVoQ6aoQaT1uQrjTiq2COuEU355M1eOFuThVwcMUsOW7SwE8ieoG/z M0KNE9fvZZYsxjBk= X-Received: by 2002:a50:cc4b:: with SMTP id n11mr13946817edi.132.1630944926342; Mon, 06 Sep 2021 09:15:26 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyDH8b9Us6SRFVZDyuBtF/yDECpL5aSsPGsnIz9VRjHFUxFD+tb5FqVuiKVyCrsFqtOHwDXlw== X-Received: by 2002:a50:cc4b:: with SMTP id n11mr13946777edi.132.1630944926014; Mon, 06 Sep 2021 09:15:26 -0700 (PDT) Received: from gator.home (cst2-174-132.cust.vodafone.cz. [31.30.174.132]) by smtp.gmail.com with ESMTPSA id h10sm4989585edf.85.2021.09.06.09.15.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Sep 2021 09:15:25 -0700 (PDT) Date: Mon, 6 Sep 2021 18:15:23 +0200 From: Andrew Jones To: "wangyanan (Y)" Subject: Re: [PATCH v6 0/5] hw/arm/virt: Introduce cpu topology support Message-ID: <20210906161523.4kc5l3usbw6l2s6r@gator.home> References: <20210824122016.144364-1-wangyanan55@huawei.com> <77ee3e41-e985-74f8-8510-1c47903689a8@huawei.com> <342f66ab-5c03-4aa3-b398-1e02926d86f7@huawei.com> MIME-Version: 1.0 In-Reply-To: <342f66ab-5c03-4aa3-b398-1e02926d86f7@huawei.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=drjones@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=drjones@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) DKIMWL_WL_HIGH=-0.391, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Salil Mehta , "Michael S . Tsirkin" , QEMU Developers , Shannon Zhao , qemu-arm , Alistair Francis , Igor Mammedov , wanghaibin.wang@huawei.com, David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, Sep 03, 2021 at 03:38:13PM +0800, wangyanan (Y) wrote: > > On 2021/9/3 15:25, Peter Maydell wrote: > > On Fri, 3 Sept 2021 at 08:05, wangyanan (Y) wrote: > > > > > > On 2021/9/2 23:56, Peter Maydell wrote: > > > > On Tue, 24 Aug 2021 at 13:20, Yanan Wang wrote: > > > > > This new version is based on patch series [1] which introduces some > > > > > fix and improvement for smp parsing. > > > > > > > > > > Description: > > > > > Once the view of an accurate virtual cpu topology is provided to guest, > > > > > with a well-designed vCPU pinning to the pCPU we may get a huge benefit, > > > > > e.g., the scheduling performance improvement. See Dario Faggioli's > > > > > research and the related performance tests in [2] for reference. > > > > > > > > > > This patch series introduces cpu topology support for ARM platform. > > > > > Both cpu-map in DT and ACPI PPTT table are introduced to store the > > > > > topology information. And we only describe the topology information > > > > > to 6.2 and newer virt machines, considering compatibility. > > > > > > > > > > patches not yet reviewed: #1 and #3. > > > > > > > > > > [1] https://lore.kernel.org/qemu-devel/20210823122804.7692-1-wangyanan55@huawei.com/ > > > > > [2] https://kvmforum2020.sched.com/event/eE1y/virtual-topology-for-virtual-machines > > > > > -friend-or-foe-dario-faggioli-suse > > > > Hi; this series doesn't apply to current head-of-git. Is it > > > > intended to be based on some other series ? > > > > > > > Yes, it was based on the -smp parsing changes in [1] which hasn't been > > > picked yet. Given that [1] somehow affects the topology parsing results > > > which we will describe to guest, I think it may be better that [1] can be > > > merged first and then this series follows. > > OK. I'll ignore this for now; please resend once that other series > > has been accepted. > Got it. Also, you'll likely want to rebase on Igor's acpi refactor series[*] [*] https://www.mail-archive.com/qemu-devel@nongnu.org/msg822151.html Thanks, drew > > Thanks, > Yanan > > thanks > > -- PMM > > > > . >