From patchwork Tue Sep 22 22:25:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduardo Habkost X-Patchwork-Id: 304695 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=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS 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 118B0C2D0E2 for ; Tue, 22 Sep 2020 22:29:56 +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 9E2DD208A9 for ; Tue, 22 Sep 2020 22:29:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="WnxwU4Oc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E2DD208A9 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+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46244 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kKqnK-0004ew-M4 for qemu-devel@archiver.kernel.org; Tue, 22 Sep 2020 18:29:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55474) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kKqjV-00084s-Bd for qemu-devel@nongnu.org; Tue, 22 Sep 2020 18:25:57 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:31043 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kKqjR-0006GH-P1 for qemu-devel@nongnu.org; Tue, 22 Sep 2020 18:25:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600813550; 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=sshdCAIf6yyO+YtiRE/5dt5hehEhv4t10cIzRyBR+3A=; b=WnxwU4OcRSZl9UYxu2+jVgE3yF27gES4/OnMngTy9kQuUPbCihVajdQycANLguZ4us5uLB hhWBgRaBsAMtZmqo9/h7Xzqf8gUATB+BO4eG4y0s527Z1FRnAfb0fKIi9L+o4kyyoQ2z3K djjWl7+tykr/6njLMdDD8YjGvM6x/6Y= 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-436-PbRSJxslOSuPaVxKPBOqqQ-1; Tue, 22 Sep 2020 18:25:47 -0400 X-MC-Unique: PbRSJxslOSuPaVxKPBOqqQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 079961084D6E; Tue, 22 Sep 2020 22:25:46 +0000 (UTC) Received: from localhost (unknown [10.10.67.5]) by smtp.corp.redhat.com (Postfix) with ESMTP id C3C2673670; Tue, 22 Sep 2020 22:25:45 +0000 (UTC) From: Eduardo Habkost To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 02/11] smp: drop support for deprecated (invalid topologies) Date: Tue, 22 Sep 2020 18:25:33 -0400 Message-Id: <20200922222542.2354748-3-ehabkost@redhat.com> In-Reply-To: <20200922222542.2354748-1-ehabkost@redhat.com> References: <20200922222542.2354748-1-ehabkost@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=ehabkost@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=ehabkost@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/22 13:33:09 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.455, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang?= =?utf-8?b?w6k=?= , Igor Mammedov Errors-To: qemu-devel-bounces+qemu-devel=archiver.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 Message-Id: <20200911133202.938754-1-imammedo@redhat.com> Signed-off-by: Eduardo Habkost --- 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 808c334fe74..fb95d2ecc4f 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) '''''''''''''''''''''''''' @@ -642,6 +629,19 @@ New machine versions (since 5.1) will not accept the option but it will still work with old machine types. User can check the QAPI schema to see if the legacy option is supported by looking at MachineInfo::numa-mem-supported property. +``-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 ea26d612374..09aee4ea52b 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 b55369357e5..1e2ab5ebe79 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;