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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4CFDC433F5 for ; Tue, 28 Sep 2021 10:12:37 +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 7305460F24 for ; Tue, 28 Sep 2021 10:12:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7305460F24 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]:53902 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVA6G-0006st-IC for qemu-devel@archiver.kernel.org; Tue, 28 Sep 2021 06:12:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54120) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVA4w-00056i-HN for qemu-devel@nongnu.org; Tue, 28 Sep 2021 06:11:14 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:29641) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVA4t-0002Vj-M7 for qemu-devel@nongnu.org; Tue, 28 Sep 2021 06:11:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1632823870; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=no1nhw9PkARqev9XAgmkYpvr8t6B07vU5vuuZxlkx/U=; b=W1Rg8aZcOo9vQk4XJSyWr7zF5y80eZyRMHx/KT0X0gmxGTUbJsryvG5IlJMl3OiXHOuWEX P/a/1GPXZZvPeMOgEqgby/yQlBOxTFM/XAk8NeQy/LHJWI4HoUuta62htCkfmoGmi/ZVGj HvlLj6q5saNlWTdm5qQGoQ7eb0zNNEk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-465-QvQH1zkHNbuOHbpiE9mraA-1; Tue, 28 Sep 2021 06:11:07 -0400 X-MC-Unique: QvQH1zkHNbuOHbpiE9mraA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6E0EA1006AA9; Tue, 28 Sep 2021 10:11:05 +0000 (UTC) Received: from redhat.com (unknown [10.39.194.52]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E831F19C79; Tue, 28 Sep 2021 10:10:45 +0000 (UTC) Date: Tue, 28 Sep 2021 11:10:40 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Yanan Wang Subject: Re: [PATCH v11 04/14] machine: Set the value of cpus to match maxcpus if it's omitted Message-ID: References: <20210928035755.11684-1-wangyanan55@huawei.com> <20210928035755.11684-5-wangyanan55@huawei.com> MIME-Version: 1.0 In-Reply-To: <20210928035755.11684-5-wangyanan55@huawei.com> User-Agent: Mutt/2.0.7 (2021-05-04) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: Peter Maydell , Andrew Jones , Cornelia Huck , Eduardo Habkost , Pierre Morel , "Michael S . Tsirkin" , Pankaj Gupta , qemu-devel@nongnu.org, qemu-s390x@nongnu.org, qemu-arm@nongnu.org, qemu-ppc@nongnu.org, wanghaibin.wang@huawei.com, Paolo Bonzini , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, Sep 28, 2021 at 11:57:45AM +0800, Yanan Wang wrote: > Currently we directly calculate the omitted cpus based on the given > incomplete collection of parameters. This makes some cmdlines like: > -smp maxcpus=16 > -smp sockets=2,maxcpus=16 > -smp sockets=2,dies=2,maxcpus=16 > -smp sockets=2,cores=4,maxcpus=16 > not work. We should probably set the value of cpus to match maxcpus > if it's omitted, which will make above configs start to work. > > So the calculation logic of cpus/maxcpus after this patch will be: > When both maxcpus and cpus are omitted, maxcpus will be calculated > from the given parameters and cpus will be set equal to maxcpus. > When only one of maxcpus and cpus is given then the omitted one > will be set to its counterpart's value. Both maxcpus and cpus may > be specified, but maxcpus must be equal to or greater than cpus. > > Note: change in this patch won't affect any existing working cmdlines > but allows more incomplete configs to be valid. > > Signed-off-by: Yanan Wang > Reviewed-by: Andrew Jones > --- > hw/core/machine.c | 29 ++++++++++++++++------------- > hw/i386/pc.c | 29 ++++++++++++++++------------- > qemu-options.hx | 11 ++++++++--- > 3 files changed, 40 insertions(+), 29 deletions(-) Reviewed-by: Daniel P. Berrangé Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|