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 62993C54798 for ; Tue, 27 Feb 2024 12:54:01 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rewy6-0001Jd-MJ; Tue, 27 Feb 2024 07:53:58 -0500 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 1rewxb-0000mx-SW; Tue, 27 Feb 2024 07:53:29 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rewxZ-0002sa-9D; Tue, 27 Feb 2024 07:53:27 -0500 Received: from mail.maildlp.com (unknown [172.18.186.216]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Tkck22Wthz6K5hF; Tue, 27 Feb 2024 20:48:58 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id 12A731400CD; Tue, 27 Feb 2024 20:53:20 +0800 (CST) Received: from localhost (10.202.227.76) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Tue, 27 Feb 2024 12:53:18 +0000 Date: Tue, 27 Feb 2024 12:53:17 +0000 To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v7 2/2] hw/acpi: Implement the SRAT GI affinity structure Message-ID: <20240227125317.00001cf8@Huawei.com> In-Reply-To: <20240223124223.800078-3-ankita@nvidia.com> References: <20240223124223.800078-1-ankita@nvidia.com> <20240223124223.800078-3-ankita@nvidia.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.202.227.76] X-ClientProxiedBy: lhrpeml500006.china.huawei.com (7.191.161.198) To lhrpeml500005.china.huawei.com (7.191.163.240) Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.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=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Reply-to: Jonathan Cameron From: Jonathan Cameron via Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Fri, 23 Feb 2024 12:42:23 +0000 wrote: > From: Ankit Agrawal > > ACPI spec provides a scheme to associate "Generic Initiators" [1] > (e.g. heterogeneous processors and accelerators, GPUs, and I/O devices with > integrated compute or DMA engines GPUs) with Proximity Domains. This is > achieved using Generic Initiator Affinity Structure in SRAT. During bootup, > Linux kernel parse the ACPI SRAT to determine the PXM ids and create a NUMA > node for each unique PXM ID encountered. Qemu currently do not implement > these structures while building SRAT. > > Add GI structures while building VM ACPI SRAT. The association between > device and node are stored using acpi-generic-initiator object. Lookup > presence of all such objects and use them to build these structures. > > The structure needs a PCI device handle [2] that consists of the device BDF. > The vfio-pci device corresponding to the acpi-generic-initiator object is > located to determine the BDF. > > [1] ACPI Spec 6.3, Section 5.2.16.6 > [2] ACPI Spec 6.3, Table 5.80 > > Signed-off-by: Ankit Agrawal > --- > hw/acpi/acpi-generic-initiator.c | 84 ++++++++++++++++++++++++ > hw/arm/virt-acpi-build.c | 3 + > include/hw/acpi/acpi-generic-initiator.h | 26 ++++++++ A few more comments. Maybe _ rather than - as more common for acpi include naming. I also wonder if we need the acpi prefix for file names given context?