From patchwork Wed Aug 30 17:05:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 9930399 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7981360383 for ; Wed, 30 Aug 2017 17:54:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6EFB728735 for ; Wed, 30 Aug 2017 17:54:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 61C6728740; Wed, 30 Aug 2017 17:54:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D682C28735 for ; Wed, 30 Aug 2017 17:54:32 +0000 (UTC) Received: from localhost ([::1]:51932 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dn7BW-0006s3-O1 for patchwork-qemu-devel@patchwork.kernel.org; Wed, 30 Aug 2017 13:53:50 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33486) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dn6Rz-0005uJ-Vm for qemu-devel@nongnu.org; Wed, 30 Aug 2017 13:06:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dn6Rw-0002W8-0h for qemu-devel@nongnu.org; Wed, 30 Aug 2017 13:06:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57200) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dn6Rv-0002Vu-QS for qemu-devel@nongnu.org; Wed, 30 Aug 2017 13:06:43 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id D5D3D20B15; Wed, 30 Aug 2017 17:06:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com D5D3D20B15 Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=david@redhat.com Received: from t460s.redhat.com (ovpn-116-98.ams2.redhat.com [10.36.116.98]) by smtp.corp.redhat.com (Postfix) with ESMTP id C50739B51A; Wed, 30 Aug 2017 17:06:38 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 30 Aug 2017 19:05:58 +0200 Message-Id: <20170830170601.15855-9-david@redhat.com> In-Reply-To: <20170830170601.15855-1-david@redhat.com> References: <20170830170601.15855-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 30 Aug 2017 17:06:43 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v1 08/11] s390x: allow only 1 CPU with TCG X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: thuth@redhat.com, david@redhat.com, cohuck@redhat.com, Richard Henderson , Alexander Graf , borntraeger@de.ibm.com, Aurelien Jarno Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Specifying more than 1 CPU (e.g. -smp 5) leads to SIGP errors (the guest tries to bring these CPUs up but fails), because we don't support multiple CPUs on s390x under TCG. Let's bail out if more than 1 are specified, so we don't raise people's hope. Signed-off-by: David Hildenbrand --- hw/s390x/s390-virtio-ccw.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 7754e3eaf9..eff96808c4 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -23,6 +23,7 @@ #include "hw/s390x/css.h" #include "virtio-ccw.h" #include "qemu/config-file.h" +#include "qemu/error-report.h" #include "s390-pci-bus.h" #include "hw/s390x/storage-keys.h" #include "hw/s390x/storage-attributes.h" @@ -56,6 +57,11 @@ static void s390_init_cpus(MachineState *machine) if (machine->cpu_model == NULL) { machine->cpu_model = s390_default_cpu_model_name(); } + if (tcg_enabled() && max_cpus > 1) { + error_report("Number of SMP CPUs requested (%d) exceeds max CPUs " + "supported by TCG (1) on s390x", max_cpus); + exit(1); + } ms->cpus = g_new0(S390CPU *, max_cpus);