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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9ED67C6FD19 for ; Mon, 13 Mar 2023 07:16:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pbcPr-0004wb-L9; Mon, 13 Mar 2023 03:16:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pbcPk-0004w5-5t for qemu-devel@nongnu.org; Mon, 13 Mar 2023 03:16:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pbcPh-00057h-Sx for qemu-devel@nongnu.org; Mon, 13 Mar 2023 03:16:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678691769; 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=cg8sQghrdYlTju6QyLNitFPjgTP5MY0vusTce4YXGjU=; b=goTYrf7Y+W5Kz3bhpl8I05ieKtuQuTGRIALu0GmF2dfJ8MpcEaBw2aoLS/8lbFwOx2VR/L S8h7ZRdC0GFZDT8XRMcOhiTMeYdNC3ozHAOHQ7eZeC69B4NCM/erwD+50AGzj0caJpCBN4 TLHa7/7oUSw50aoX1wWaRKuRr6p4qFI= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-107-9RplCorqM8exqj9eIg709A-1; Mon, 13 Mar 2023 03:16:05 -0400 X-MC-Unique: 9RplCorqM8exqj9eIg709A-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E466F80280D; Mon, 13 Mar 2023 07:16:04 +0000 (UTC) Received: from [10.72.13.125] (ovpn-13-125.pek2.redhat.com [10.72.13.125]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D667C2166B26; Mon, 13 Mar 2023 07:15:54 +0000 (UTC) Subject: Re: [PATCH v3 0/3] NUMA: Apply cluster-NUMA-node boundary for aarch64 and riscv machines From: Gavin Shan To: qemu-arm@nongnu.org Cc: qemu-riscv@nongnu.org, qemu-devel@nongnu.org, rad@semihalf.com, peter.maydell@linaro.org, quic_llindhol@quicinc.com, eduardo@habkost.net, marcel.apfelbaum@gmail.com, philmd@linaro.org, wangyanan55@huawei.com, palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, thuth@redhat.com, lvivier@redhat.com, pbonzini@redhat.com, imammedo@redhat.com, yihyu@redhat.com, ajones@ventanamicro.com, berrange@redhat.com, dbarboza@ventanamicro.com, shan.gavin@gmail.com References: <20230225063527.281479-1-gshan@redhat.com> Message-ID: <2031a7d5-ec3a-7306-825c-e845bf56f3d9@redhat.com> Date: Mon, 13 Mar 2023 15:15:51 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.0 MIME-Version: 1.0 In-Reply-To: <20230225063527.281479-1-gshan@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Received-SPF: pass client-ip=170.10.129.124; envelope-from=gshan@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 2/25/23 2:35 PM, Gavin Shan wrote: > For arm64 and riscv architecture, the driver (/base/arch_topology.c) is > used to populate the CPU topology in the Linux guest. It's required that > the CPUs in one cluster can't span mutiple NUMA nodes. Otherwise, the Linux > scheduling domain can't be sorted out, as the following warning message > indicates. To avoid the unexpected confusion, this series attempts to > warn about such kind of irregular configurations. > > -smp 6,maxcpus=6,sockets=2,clusters=1,cores=3,threads=1 \ > -numa node,nodeid=0,cpus=0-1,memdev=ram0 \ > -numa node,nodeid=1,cpus=2-3,memdev=ram1 \ > -numa node,nodeid=2,cpus=4-5,memdev=ram2 \ > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at kernel/sched/topology.c:2271 build_sched_domains+0x284/0x910 > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.14.0-268.el9.aarch64 #1 > pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) > pc : build_sched_domains+0x284/0x910 > lr : build_sched_domains+0x184/0x910 > sp : ffff80000804bd50 > x29: ffff80000804bd50 x28: 0000000000000002 x27: 0000000000000000 > x26: ffff800009cf9a80 x25: 0000000000000000 x24: ffff800009cbf840 > x23: ffff000080325000 x22: ffff0000005df800 x21: ffff80000a4ce508 > x20: 0000000000000000 x19: ffff000080324440 x18: 0000000000000014 > x17: 00000000388925c0 x16: 000000005386a066 x15: 000000009c10cc2e > x14: 00000000000001c0 x13: 0000000000000001 x12: ffff00007fffb1a0 > x11: ffff00007fffb180 x10: ffff80000a4ce508 x9 : 0000000000000041 > x8 : ffff80000a4ce500 x7 : ffff80000a4cf920 x6 : 0000000000000001 > x5 : 0000000000000001 x4 : 0000000000000007 x3 : 0000000000000002 > x2 : 0000000000001000 x1 : ffff80000a4cf928 x0 : 0000000000000001 > Call trace: > build_sched_domains+0x284/0x910 > sched_init_domains+0xac/0xe0 > sched_init_smp+0x48/0xc8 > kernel_init_freeable+0x140/0x1ac > kernel_init+0x28/0x140 > ret_from_fork+0x10/0x20 > > PATCH[1] Warn about the irregular configuration if required > PATCH[2] Enable the validation for aarch64 machines > PATCH[3] Enable the validation for riscv machines > > v2: https://lists.nongnu.org/archive/html/qemu-arm/2023-02/msg01080.html > v1: https://lists.nongnu.org/archive/html/qemu-arm/2023-02/msg00886.html > > Changelog > ========= > v3: > * Validate cluster-to-NUMA instead of socket-to-NUMA > boundary (Gavin) > * Move the switch from MachineState to MachineClass (Philippe) > * Warning instead of rejecting the irregular configuration (Daniel) > * Comments to mention cluster-to-NUMA is platform instead > of architectural choice (Drew) > * Drop PATCH[v2 1/4] related to qtests/numa-test (Gavin) > v2: > * Fix socket-NUMA-node boundary issues in qtests/numa-test (Gavin) > * Add helper set_numa_socket_boundary() and validate the > boundary in the generic path (Philippe) > Ping, Philippe and Igor. Please let me know if you have more comments, thanks! > Gavin Shan (3): > numa: Validate cluster and NUMA node boundary if required > hw/arm: Validate cluster and NUMA node boundary > hw/riscv: Validate cluster and NUMA node boundary > > hw/arm/sbsa-ref.c | 2 ++ > hw/arm/virt.c | 2 ++ > hw/core/machine.c | 42 ++++++++++++++++++++++++++++++++++++++++++ > hw/riscv/spike.c | 2 ++ > hw/riscv/virt.c | 2 ++ > include/hw/boards.h | 1 + > 6 files changed, 51 insertions(+) >