From nobody Sun Nov 16 01:01:01 2025 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=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1745497619; cv=none; d=zohomail.com; s=zohoarc; b=ScuQs5xEB0hQajhDLHdSOjeqFo+83p0a+YTO9JjsUo0ArRP+NwEJlyWbLj+JF78s761oUCO7QXqVHlYbc4fLCB+/TYPFpOrsBaa+Fyd0iDhJZ/rT+7SzSW9WwQjBYqEtI5owR6FialieeCeRMoMiOvbIeADDrhMOuKiIqoKIF4E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1745497619; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=0yUo5Ptx9mqlFPqb7CAiCNi5M8g3DQa1vK+xcr1D20c=; b=i33dM8PUd/1LtzmCxL8L4Wz1eCGFJjfza6/SWhjaW4BrCyWE0zD+QLFUsIaFN09+RVaxiG+nttVywXOL5FkGIKviAEi84LPjQJwtZ927mxzVUx2z7TT3xQ1cAUQMJLvBNlKtRNHL515dzqxHjxi0uCGtd3cYW73FPHmDahuNLwg= ARC-Authentication-Results: i=1; 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=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1745497619222509.02174171681963; Thu, 24 Apr 2025 05:26:59 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1u7vfG-0007e5-0I; Thu, 24 Apr 2025 08:26:50 -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 1u7ven-0007TM-LL for qemu-devel@nongnu.org; Thu, 24 Apr 2025 08:26:24 -0400 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 1u7vel-00046Y-4f for qemu-devel@nongnu.org; Thu, 24 Apr 2025 08:26:20 -0400 Received: from mail.maildlp.com (unknown [172.18.186.216]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Zjw7l5rCXz6K9Kp; Thu, 24 Apr 2025 20:21:39 +0800 (CST) Received: from frapeml500003.china.huawei.com (unknown [7.182.85.28]) by mail.maildlp.com (Postfix) with ESMTPS id 91AE214020A; Thu, 24 Apr 2025 20:26:16 +0800 (CST) Received: from a2303103017.china.huawei.com (10.47.67.86) by frapeml500003.china.huawei.com (7.182.85.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 24 Apr 2025 14:26:15 +0200 To: CC: , , , , , , , , , Subject: [PATCH v4 3/4] hw/acpi/aml-build: Build a root node in the PPTT table Date: Thu, 24 Apr 2025 13:24:38 +0100 Message-ID: <20250424122439.550-4-alireza.sanaee@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250424122439.550-1-alireza.sanaee@huawei.com> References: <20250424122439.550-1-alireza.sanaee@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.47.67.86] X-ClientProxiedBy: lhrpeml500001.china.huawei.com (7.191.163.213) To frapeml500003.china.huawei.com (7.182.85.28) 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=185.176.79.56; envelope-from=alireza.sanaee@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_H2=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Alireza Sanaee From: Alireza Sanaee via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1745497621289019100 Content-Type: text/plain; charset="utf-8" From: Yicong Yang Currently we build the PPTT starting from the socket node and each socket will be a separate tree. For a multi-socket system it'll be hard for the OS to know the whole system is homogeneous or not (actually we're in the current implementation) since no parent node to telling the identical implementation informentation. Add a root node for indicating this. Signed-off-by: Yicong Yang Reviewed-by: Jonathan Cameron Signed-off-by: Alireza Sanaee --- hw/acpi/aml-build.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 560cee12a24b..3010325ca423 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -2153,12 +2153,25 @@ void build_pptt(GArray *table_data, BIOSLinker *lin= ker, MachineState *ms, int64_t socket_id =3D -1, cluster_id =3D -1, core_id =3D -1; uint32_t socket_offset =3D 0, cluster_offset =3D 0, core_offset =3D 0; uint32_t pptt_start =3D table_data->len; + uint32_t root_offset; int n; AcpiTable table =3D { .sig =3D "PPTT", .rev =3D 2, .oem_id =3D oem_id, .oem_table_id =3D oem_table_id= }; =20 acpi_table_begin(&table, table_data); =20 + /* + * Build a root node for all the processor nodes. Otherwise when + * building a multi-socket system each socket tree are separated + * and will be hard for the OS like Linux to know whether the + * system is homogeneous. + */ + root_offset =3D table_data->len - pptt_start; + build_processor_hierarchy_node(table_data, + (1 << 0) | /* Physical package */ + (1 << 4), /* Identical Implementation */ + 0, 0, NULL, 0); + /* * This works with the assumption that cpus[n].props.*_id has been * sorted from top to down levels in mc->possible_cpu_arch_ids(). @@ -2175,7 +2188,7 @@ void build_pptt(GArray *table_data, BIOSLinker *linke= r, MachineState *ms, build_processor_hierarchy_node(table_data, (1 << 0) | /* Physical package */ (1 << 4), /* Identical Implementation */ - 0, socket_id, NULL, 0); + root_offset, socket_id, NULL, 0); } =20 if (mc->smp_props.clusters_supported && mc->smp_props.has_clusters= ) { --=20 2.34.1