From nobody Tue Feb 10 05:41:33 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=huawei.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 162666512843486.49595529334454; Sun, 18 Jul 2021 20:25:28 -0700 (PDT) Received: from localhost ([::1]:59738 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m5JuJ-0002Tk-DQ for importer@patchew.org; Sun, 18 Jul 2021 23:25:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42242) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m5JqN-0007MM-TR for qemu-devel@nongnu.org; Sun, 18 Jul 2021 23:21:23 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:2435) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m5JqL-0006L5-RK for qemu-devel@nongnu.org; Sun, 18 Jul 2021 23:21:23 -0400 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4GSn923jLwzZqm5; Mon, 19 Jul 2021 11:17:58 +0800 (CST) Received: from dggpemm500023.china.huawei.com (7.185.36.83) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Mon, 19 Jul 2021 11:20:53 +0800 Received: from DESKTOP-TMVL5KK.china.huawei.com (10.174.187.128) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Mon, 19 Jul 2021 11:20:52 +0800 From: Yanan Wang To: Subject: [PATCH for-6.2 v2 05/11] machine: Improve the error reporting of smp parsing Date: Mon, 19 Jul 2021 11:20:37 +0800 Message-ID: <20210719032043.25416-6-wangyanan55@huawei.com> X-Mailer: git-send-email 2.8.4.windows.1 In-Reply-To: <20210719032043.25416-1-wangyanan55@huawei.com> References: <20210719032043.25416-1-wangyanan55@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.187.128] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpemm500023.china.huawei.com (7.185.36.83) X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.187; envelope-from=wangyanan55@huawei.com; helo=szxga01-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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: Peter Maydell , Andrew Jones , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Eduardo Habkost , "Michael S . Tsirkin" , wanghaibin.wang@huawei.com, Richard Henderson , Greg Kurz , Halil Pasic , yuzenghui@huawei.com, Igor Mammedov , Thomas Huth , Paolo Bonzini , Yanan Wang , David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1626665129091100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" We totally have two requirements for a valid SMP configuration: the sum of "sockets * dies * cores * threads" must represent all the possible cpus, i.e., max_cpus, and must include the initial present cpus, i.e., smp_cpus. We only need to ensure "sockets * dies * cores * threads =3D=3D maxcpus" at first and then ensure "sockets * dies * cores * threads >=3D cpus". With a reasonable order of the sanity-check, we can simplify the error reporting code. Signed-off-by: Yanan Wang --- hw/core/machine.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/hw/core/machine.c b/hw/core/machine.c index 668f0a1553..8b4d07d3fc 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -788,21 +788,6 @@ static void smp_parse(MachineState *ms, SMPConfigurati= on *config, Error **errp) cpus =3D cpus > 0 ? cpus : sockets * dies * cores * threads; maxcpus =3D maxcpus > 0 ? maxcpus : cpus; =20 - if (sockets * dies * cores * threads < cpus) { - g_autofree char *dies_msg =3D g_strdup_printf( - mc->smp_dies_supported ? " * dies (%u)" : "", dies); - error_setg(errp, "cpu topology: " - "sockets (%u)%s * cores (%u) * threads (%u) < " - "smp_cpus (%u)", - sockets, dies_msg, cores, threads, cpus); - return; - } - - if (maxcpus < cpus) { - error_setg(errp, "maxcpus must be equal to or greater than smp"); - return; - } - if (sockets * dies * cores * threads !=3D maxcpus) { g_autofree char *dies_msg =3D g_strdup_printf( mc->smp_dies_supported ? " * dies (%u)" : "", dies); @@ -814,6 +799,16 @@ static void smp_parse(MachineState *ms, SMPConfigurati= on *config, Error **errp) return; } =20 + if (sockets * dies * cores * threads < cpus) { + g_autofree char *dies_msg =3D g_strdup_printf( + mc->smp_dies_supported ? " * dies (%u)" : "", dies); + error_setg(errp, "Invalid CPU topology: " + "sockets (%u)%s * cores (%u) * threads (%u) < " + "smp_cpus (%u)", + sockets, dies_msg, cores, threads, cpus); + return; + } + ms->smp.cpus =3D cpus; ms->smp.sockets =3D sockets; ms->smp.dies =3D dies; --=20 2.19.1