From patchwork Thu Sep 24 09:22:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 11796891 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 444BF92C for ; Thu, 24 Sep 2020 10:09:50 +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 06DA1239A1 for ; Thu, 24 Sep 2020 10:09:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="P8/Gt2Mr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 06DA1239A1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:47570 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLOCC-00013Z-Ud for patchwork-qemu-devel@patchwork.kernel.org; Thu, 24 Sep 2020 06:09:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39316) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kLNU2-0001i5-Fj for qemu-devel@nongnu.org; Thu, 24 Sep 2020 05:24:10 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:38276) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kLNTz-00068i-K6 for qemu-devel@nongnu.org; Thu, 24 Sep 2020 05:24:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600939447; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=SNkXRfzI2m9zu5mdND3zfbCZifO5DM42yhn0HW0HIF0=; b=P8/Gt2Mr8Z5jbuw1p7tO0cSwcJGKGYUSESvFCGMIQ1cURXcPD7qhXrGFRKjH30O/wv06F/ 44n5hFw1o7HSQeCBUTuQ+cHBJWeA0CZxI5zfJ4Bcu7yYh9qKwNfTmryEuBPLoQtfPw/txo vugMX+vjPLRtX7WIn5LCph2oSdjagCw= 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-497-8VVAG9TPMkmT5R4IOBco2Q-1; Thu, 24 Sep 2020 05:24:05 -0400 X-MC-Unique: 8VVAG9TPMkmT5R4IOBco2Q-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 20FAB1891E83 for ; Thu, 24 Sep 2020 09:24:04 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id D564260E1C; Thu, 24 Sep 2020 09:24:03 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 63/92] smp: drop support for deprecated (invalid topologies) Date: Thu, 24 Sep 2020 05:22:45 -0400 Message-Id: <20200924092314.1722645-64-pbonzini@redhat.com> In-Reply-To: <20200924092314.1722645-1-pbonzini@redhat.com> References: <20200924092314.1722645-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/22 23:02:20 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.228, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: Igor Mammedov Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Igor Mammedov it's was deprecated since 3.1 Support for invalid topologies is removed, the user must ensure that topologies described with -smp include all possible cpus, i.e. (sockets * cores * threads) == maxcpus or QEMU will exit with error. Signed-off-by: Igor Mammedov Acked-by: Message-Id: <20200911133202.938754-1-imammedo@redhat.com> Signed-off-by: Paolo Bonzini --- docs/system/deprecated.rst | 26 +++++++++++++------------- hw/core/machine.c | 16 ++++------------ hw/i386/pc.c | 16 ++++------------ 3 files changed, 21 insertions(+), 37 deletions(-) diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index e78d03038f..17703d18fd 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -47,19 +47,6 @@ The 'file' driver for drives is no longer appropriate for character or host devices and will only accept regular files (S_IFREG). The correct driver for these file types is 'host_cdrom' or 'host_device' as appropriate. -``-smp`` (invalid topologies) (since 3.1) -''''''''''''''''''''''''''''''''''''''''' - -CPU topology properties should describe whole machine topology including -possible CPUs. - -However, historically it was possible to start QEMU with an incorrect topology -where *n* <= *sockets* * *cores* * *threads* < *maxcpus*, -which could lead to an incorrect topology enumeration by the guest. -Support for invalid topologies will be removed, the user must ensure -topologies described with -smp include all possible cpus, i.e. -*sockets* * *cores* * *threads* = *maxcpus*. - ``-vnc acl`` (since 4.0.0) '''''''''''''''''''''''''' @@ -646,6 +633,19 @@ as ignored. Currently, users are responsible for making sure the backing storage specified with ``-mem-path`` can actually provide the guest RAM configured with ``-m`` and QEMU fails to start up if RAM allocation is unsuccessful. +``-smp`` (invalid topologies) (removed 5.2) +''''''''''''''''''''''''''''''''''''''''''' + +CPU topology properties should describe whole machine topology including +possible CPUs. + +However, historically it was possible to start QEMU with an incorrect topology +where *n* <= *sockets* * *cores* * *threads* < *maxcpus*, +which could lead to an incorrect topology enumeration by the guest. +Support for invalid topologies is removed, the user must ensure +topologies described with -smp include all possible cpus, i.e. +*sockets* * *cores* * *threads* = *maxcpus*. + Block devices ------------- diff --git a/hw/core/machine.c b/hw/core/machine.c index f70d388e86..d25149685e 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -754,23 +754,15 @@ static void smp_parse(MachineState *ms, QemuOpts *opts) exit(1); } - if (sockets * cores * threads > ms->smp.max_cpus) { - error_report("cpu topology: " - "sockets (%u) * cores (%u) * threads (%u) > " - "maxcpus (%u)", + if (sockets * cores * threads != ms->smp.max_cpus) { + error_report("Invalid CPU topology: " + "sockets (%u) * cores (%u) * threads (%u) " + "!= maxcpus (%u)", sockets, cores, threads, ms->smp.max_cpus); exit(1); } - if (sockets * cores * threads != ms->smp.max_cpus) { - warn_report("Invalid CPU topology deprecated: " - "sockets (%u) * cores (%u) * threads (%u) " - "!= maxcpus (%u)", - sockets, cores, threads, - ms->smp.max_cpus); - } - ms->smp.cpus = cpus; ms->smp.cores = cores; ms->smp.threads = threads; diff --git a/hw/i386/pc.c b/hw/i386/pc.c index b55369357e..1e2ab5ebe7 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -746,23 +746,15 @@ void pc_smp_parse(MachineState *ms, QemuOpts *opts) exit(1); } - if (sockets * dies * cores * threads > ms->smp.max_cpus) { - error_report("cpu topology: " - "sockets (%u) * dies (%u) * cores (%u) * threads (%u) > " - "maxcpus (%u)", + if (sockets * dies * cores * threads != ms->smp.max_cpus) { + error_report("Invalid CPU topology deprecated: " + "sockets (%u) * dies (%u) * cores (%u) * threads (%u) " + "!= maxcpus (%u)", sockets, dies, cores, threads, ms->smp.max_cpus); exit(1); } - if (sockets * dies * cores * threads != ms->smp.max_cpus) { - warn_report("Invalid CPU topology deprecated: " - "sockets (%u) * dies (%u) * cores (%u) * threads (%u) " - "!= maxcpus (%u)", - sockets, dies, cores, threads, - ms->smp.max_cpus); - } - ms->smp.cpus = cpus; ms->smp.cores = cores; ms->smp.threads = threads;