From nobody Thu Dec 18 00:11:06 2025 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on2052.outbound.protection.outlook.com [40.107.92.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E2A2720E70A; Fri, 6 Dec 2024 16:12:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.92.52 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733501559; cv=fail; b=O7+fgFnSlvlmUJ+de2yWrtEOjeC3g7Gq8x00anlZgSIBwO4nskjd2BYFqhdHG7IzMSRashihVEdG097Cdzi5s+ilaDU+415wt6iHu/s14vMk4ajdA+dGTzf6Aq/2JT1v8XtHGUUJF2anISJi8baAT3TQw9ly2nvcmCK/TZTVcck= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733501559; c=relaxed/simple; bh=O2tgyfLuD4FrR/vAWACNKO2AEuAbqENgbcOrMaQbV4g=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=kzUhaRp4ydrditn8g1tlTSAKL5HLxFPHEzPmk+PFsTsx7dn4UAyI0LrZK6faUYuWqLEMJOSsX7dokAZMz8MMfcyKa7E0P0jX3mn2rjqcaJQMoXz/TxH0XeAatBCCLIE/WB2hJOQAQdP9LU2pqQEUJirhAvhfKl3WYL2Gla311tI= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=TobWx2KY; arc=fail smtp.client-ip=40.107.92.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="TobWx2KY" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=T60rZmTow9T2r3QT6CuRtITE1wlEArKdxfS08fI0pw3jJ6Z1ldQLrXFrYOiC1Z2LHNXYfurD1IsCu7yf7oR/wt23dw3LhVuna5T62lIIWCRHoaX7KN0vHtRIEoW2AcPqFtZUu0O5YzlWH/GAdtg0uWmYkdThl2H4xEvVbPVcYKPQ9Db8+sYQ28mHs+4UibER1cW+R0lR2elLNJ/K+2EJgl1/yLVdnPHPS7SSQ/bsthPx6D/KoEfqqqNl7eMN0gMPlvr2U5VwIS8beHhoCSIuM/G9ovu7NqmPZoHKhqmDPo0FHDWjOEsbRMwZRiwBI3Y2Jzfj68B/YWnLHN8JVWejXg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=AQdL5h0LeIad4WjSklXOQXicb6CKC4V6SyF7Q0m0rcs=; b=A8Ck1ZAxYtP4ZTcMSqoR9Q9v9j208eCdAGIgXPYOmEtVjsvFblTgZ9d3Pk4aORdaL54Y8+ya90NB8avtbWdr1ZaW206+w+i+HoyKCHal9LqRdOFtdgrpKUbPELCmP0mWQK1+C0+8Chjmcm+OHJCx6S7mmtDGs03S4DOTxtUFTj/UdyxgUsnlUM9Nwuzqxa/gST+3HwYMYCy0OodOtsshcR7bfqSNtvo+JHbGfPRtyI/D+RdHOxMEVrvTjlVYnhIdBykhDAIBwxR27Toj4IzQNbfV5Wqywx7U50KRdqD9or7rsDUf3Uf9g2Q9jqYFPjLO/TkQQy3EXejpouFwc8jB4Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=AQdL5h0LeIad4WjSklXOQXicb6CKC4V6SyF7Q0m0rcs=; b=TobWx2KYLF/R1HX1bvdDdwVZLmTu/zQYZnbAVEWd7DZK+z/vklOAivyoP+nSpYSVrf8mrUW3awmDHTeupK5c6lAln1dhbpLcMjy53gaZZFj/chW5/IMOF2XLmuaJ+EKwQl5NOFDgbXqj7vApxRnHUbcSkgDWQzBOBeA9gXHY8m0= Received: from DM6PR02CA0057.namprd02.prod.outlook.com (2603:10b6:5:177::34) by SJ0PR12MB6807.namprd12.prod.outlook.com (2603:10b6:a03:479::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8207.18; Fri, 6 Dec 2024 16:12:31 +0000 Received: from DS1PEPF00017095.namprd03.prod.outlook.com (2603:10b6:5:177:cafe::70) by DM6PR02CA0057.outlook.office365.com (2603:10b6:5:177::34) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8182.15 via Frontend Transport; Fri, 6 Dec 2024 16:12:31 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DS1PEPF00017095.mail.protection.outlook.com (10.167.17.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8230.7 via Frontend Transport; Fri, 6 Dec 2024 16:12:30 +0000 Received: from purico-9eb2host.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Fri, 6 Dec 2024 10:12:29 -0600 From: Yazen Ghannam To: , , Tony Luck , Mario Limonciello , "Bjorn Helgaas" , Jean Delvare , "Guenter Roeck" , Clemens Ladisch , "Shyam Sundar S K" , Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , "Naveen Krishna Chatradhi" , Suma Hegde CC: , , , , Subject: [PATCH v2 07/16] x86/amd_nb: Use topology info to get AMD node count Date: Fri, 6 Dec 2024 16:12:00 +0000 Message-ID: <20241206161210.163701-8-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241206161210.163701-1-yazen.ghannam@amd.com> References: <20241206161210.163701-1-yazen.ghannam@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF00017095:EE_|SJ0PR12MB6807:EE_ X-MS-Office365-Filtering-Correlation-Id: 0e40a525-8bf7-4a33-acab-08dd1610c94d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|7416014|376014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?j9sKG9+/+WGW2I13TQOTzkfsRvLmZMxmsHKT6MN2aEXcLi6O9XHpZPtXaLs0?= =?us-ascii?Q?M/bdzyFKqL1FEcP/MFgv2MGyLaJprWuM0WNkubEg9Mj5nW4vTS6liTAl51mR?= =?us-ascii?Q?fTUvFb1Bcgcro6dGMhWqJtiyH/7x1RLfm2AveFY3hpQ3ikdIlWGOSg4f5sbu?= =?us-ascii?Q?eCndFRh2ADWIzilhdcUVEE38MsdaZSzzK47dZgcmtMGlnKjbNphtpRAGRylo?= =?us-ascii?Q?KX2b4T3rALddh1CNEQI7Lrmz9zsyVrIOVNSkcyMEnFZrRo5en6j0VO+fVLZt?= =?us-ascii?Q?RgDMDK7pbQZ6J2KvFE6Fq9lp+owQoZZ/TQ/xuRmbjOMxxQ+V2L6TcICbx43n?= =?us-ascii?Q?jWNTTZOHe/qmV9DS+/hrZTuEq89pmiYi8VNTf26HseSyYbFAWypF+ROg496o?= =?us-ascii?Q?9tV/HW7+zt73yNCEvs6Hv4tZzImgYfRMQruIiCt/RZsJfwQpy1DpkVs+HQMO?= =?us-ascii?Q?MgdxizoIyB0T7H5cL+8d0drw6MPRkDl8eQuBZxps0v9wclK0XIV792LPtNjj?= =?us-ascii?Q?F07YQJUlvAOeIqFTlXH+xwxdE9M5bQtNnvBmX9PtNNGTBk8BJ9KKFfo1Bb1e?= =?us-ascii?Q?QEiJeDly9Dv28jbqGX22gGqB1fNVkL0UYBvuf06TK9yrtBv6isM4ceQ57NG3?= =?us-ascii?Q?QqP2olcVL6RC+WCce8Qouxai5ZBZdOLR5fm5caBWn6jIlO8DJr0EBEWwRAut?= =?us-ascii?Q?u6DZRgMoat7i7HuPm1nKXfhy8M+dB8C4Ce+yFaEF/Q1Yrq1ghqoezCUYt3zU?= =?us-ascii?Q?/4Q56iHNwHaa/94blTrwI54Ky8UCDHByHP/p62oEAqmAZTUeNitT1Tu6f+1q?= =?us-ascii?Q?zjji5xwd22pLZzvc/DZoZ8xIimVtn8y7nOjDxFfmamRlagEYJSKG2VYGTJBZ?= =?us-ascii?Q?7Z/w2fGE5Mb82nHHHxJVGoS3+/e7d/ukJZ1jwWbWpWZtlbM09v1eNOKxrWHu?= =?us-ascii?Q?5nItO/R8DAJh7lvRZd//Z1F+6vka/61a6+Jh4l70e/rfx77TYJCWH5HTke4H?= =?us-ascii?Q?qpsg9QSUw5+lf0gSj3TshRygDe49xSyQOyFmaBKkKYiBNz29Uvn9IyOddd0n?= =?us-ascii?Q?Cr/Idsm+I+spfQSUcHf8CuC1z4RPSegyGB6pAP3Y6dM4jafPQKeTdjqX+NH0?= =?us-ascii?Q?6hfezA5pN0s27nKqNv/jHMeVn6IIGt4WIGN6V5lRphb6ZYBxQIT5Osvv54xm?= =?us-ascii?Q?p9BK4Zjh/rsSHLOtUfHG3gT45AIqhb6d3+7DYwPFMNAXxy9wQckirI7Hgn1G?= =?us-ascii?Q?ebTSJaRnRXx/VHQxi1GNT985b2zizR61b8Xna7dfRfZSgpieXhSly55DTe/V?= =?us-ascii?Q?VpsKeo1fbvVdu8MmN5rxkFlX5tupUPfSm6utBAm+uFZTiGhdfXQgR6BLJzq9?= =?us-ascii?Q?iJTrncUUjAbydW7RCAb1bFzvDi2B1cgX/XbBenIXIDWTU8CSyPFlh4YVH/Sz?= =?us-ascii?Q?lKStcjLioHRENmeCHyvqEZnCkVeAeKK1hcE5WyEFrlxMYVJEokFplA=3D=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(1800799024)(7416014)(376014)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Dec 2024 16:12:30.7983 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0e40a525-8bf7-4a33-acab-08dd1610c94d X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF00017095.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB6807 Content-Type: text/plain; charset="utf-8" Currently, the total AMD node count is determined by searching and counting CPU/node devices using PCI IDs. However, AMD node information is already available through topology CPUID/MSRs. The recent topology rework has made this info easier to access. Replace the node counting code with a simple product of topology info. Signed-off-by: Yazen Ghannam --- Notes: Link: https://lore.kernel.org/20241023172150.659002-8-yazen.ghannam@amd.com =20 v1->v2: * No change. arch/x86/include/asm/amd_node.h | 5 +++++ arch/x86/kernel/amd_nb.c | 11 ++--------- 2 files changed, 7 insertions(+), 9 deletions(-) diff --git a/arch/x86/include/asm/amd_node.h b/arch/x86/include/asm/amd_nod= e.h index 3f097dd479f8..419a0ad13ef2 100644 --- a/arch/x86/include/asm/amd_node.h +++ b/arch/x86/include/asm/amd_node.h @@ -25,4 +25,9 @@ struct pci_dev *amd_node_get_func(u16 node, u8 func); struct pci_dev *amd_node_get_root(u16 node); =20 +static inline u16 amd_num_nodes(void) +{ + return topology_amd_nodes_per_pkg() * topology_max_packages(); +} + #endif /*_ASM_X86_AMD_NODE_H_*/ diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index 6218a0428c77..371e33abbdc1 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -186,7 +186,6 @@ static int amd_cache_northbridges(void) const struct pci_device_id *misc_ids =3D amd_nb_misc_ids; struct pci_dev *misc; struct amd_northbridge *nb; - u16 misc_count =3D 0; u16 i; =20 if (amd_northbridges.num) @@ -196,19 +195,13 @@ static int amd_cache_northbridges(void) misc_ids =3D hygon_nb_misc_ids; } =20 - misc =3D NULL; - while ((misc =3D next_northbridge(misc, misc_ids))) - misc_count++; - - if (!misc_count) - return -ENODEV; + amd_northbridges.num =3D amd_num_nodes(); =20 - nb =3D kcalloc(misc_count, sizeof(struct amd_northbridge), GFP_KERNEL); + nb =3D kcalloc(amd_northbridges.num, sizeof(struct amd_northbridge), GFP_= KERNEL); if (!nb) return -ENOMEM; =20 amd_northbridges.nb =3D nb; - amd_northbridges.num =3D misc_count; =20 misc =3D NULL; for (i =3D 0; i < amd_northbridges.num; i++) { --=20 2.43.0