From patchwork Wed Oct 20 14:21:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "wangyanan (Y)" X-Patchwork-Id: 1543945 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4HZCrP3lnYz9sR4 for ; Thu, 21 Oct 2021 01:37:41 +1100 (AEDT) Received: from localhost ([::1]:43054 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mdCip-0003fq-Ay for incoming@patchwork.ozlabs.org; Wed, 20 Oct 2021 10:37:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45602) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mdCTK-0006t4-9v; Wed, 20 Oct 2021 10:21:39 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:3158) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mdCTG-0002A3-UE; Wed, 20 Oct 2021 10:21:37 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4HZCMz6rF2z90ML; Wed, 20 Oct 2021 22:16:31 +0800 (CST) Received: from dggpemm500023.china.huawei.com (7.185.36.83) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Wed, 20 Oct 2021 22:21:27 +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 15.1.2308.15; Wed, 20 Oct 2021 22:21:27 +0800 From: Yanan Wang To: Peter Maydell , Richard Henderson , Eric Auger , Andrew Jones , "Michael S . Tsirkin" , Igor Mammedov Subject: [PATCH v9 0/8] hw/arm/virt: Introduce cpu topology support Date: Wed, 20 Oct 2021 22:21:17 +0800 Message-ID: <20211020142125.7516-1-wangyanan55@huawei.com> X-Mailer: git-send-email 2.8.4.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.187.128] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500023.china.huawei.com (7.185.36.83) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.188; envelope-from=wangyanan55@huawei.com; helo=szxga02-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_H2=-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: qemu-devel@nongnu.org, Yanan Wang , Shannon Zhao , qemu-arm@nongnu.org, Alistair Francis , wanghaibin.wang@huawei.com, David Gibson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Hi, This is the latest v9 series which supports exposing vCPU topology to the guest for Arm virt machines. Description of this series: Once the view of an accurate virtual cpu topology is provided to guest, with a well-designed vCPU pinning to the pCPU we may get a huge benefit, e.g., the scheduling performance improvement. See Dario Faggioli's research and the related performance tests in [1] for reference. This patch series introduces cpu topology support for Arm platform. Both cpu-map in DT and ACPI PPTT table are introduced to store the topology information. And we only describe the topology information to 6.2 and newer virt machines, considering compatibility. [1] https://kvmforum2020.sched.com/event/eE1y/virtual-topology-for-virtual-machines -friend-or-foe-dario-faggioli-suse Changelog: v8->v9: - add Eric's R-bs, thanks! - address Eric's suggestions to update some function comments and commit msg (patch #5) - make build_processor_hierarchy_node static as it's only used by build_pptt (patch #4) - retested. - v8: https://lore.kernel.org/qemu-devel/20211014132206.19220-1-wangyanan55@huawei.com/ v7->v8: - rebased on top of master (commit e5b2333f24) - only add one generic expected file for PPTT instead of four, which works fine enough for now (patch #6 and #8 updated) - v7: https://lore.kernel.org/qemu-devel/20211007030746.10420-1-wangyanan55@huawei.com/ v6->v7: - rebased on top of master (commit ca61fa4b80) - use newly introduced acpi_table_begin/acpi_table_end APIs to build PPTT (patch #5 updated) - add reference files for PPTT to fix broken bios-table-test for Aarch64 virt machine (patch #6-#8 added) - v6: https://lore.kernel.org/qemu-devel/20210824122016.144364-1-wangyanan55@huawei.com/ Andrew Jones (2): hw/arm/virt: Add cpu-map to device tree hw/acpi/aml-build: Add PPTT table Yanan Wang (6): hw/arm/virt: Only describe cpu topology since virt-6.2 device_tree: Add qemu_fdt_add_path hw/acpi/aml-build: Add Processor hierarchy node structure tests/data/acpi/virt: Add an empty expected file for PPTT hw/arm/virt-acpi-build: Generate PPTT table tests/data/acpi/virt: Update the empty expected file for PPTT hw/acpi/aml-build.c | 89 +++++++++++++++++++++++++++++++++++ hw/arm/virt-acpi-build.c | 8 +++- hw/arm/virt.c | 71 ++++++++++++++++++++++++---- include/hw/acpi/aml-build.h | 3 ++ include/hw/arm/virt.h | 4 +- include/sysemu/device_tree.h | 1 + softmmu/device_tree.c | 44 ++++++++++++++++- tests/data/acpi/virt/PPTT | Bin 0 -> 76 bytes 8 files changed, 206 insertions(+), 14 deletions(-) create mode 100644 tests/data/acpi/virt/PPTT --- 2.19.1