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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 BL6PEPF0001AB4D.mail.protection.outlook.com (10.167.242.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8093.14 via Frontend Transport; Wed, 23 Oct 2024 17:22:06 +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; Wed, 23 Oct 2024 12:22:05 -0500 From: Yazen Ghannam To: CC: , , , , , , , , , , , , , , , , , , , Yazen Ghannam Subject: [PATCH 03/16] x86/amd_nb: Clean up early_is_amd_nb() Date: Wed, 23 Oct 2024 17:21:37 +0000 Message-ID: <20241023172150.659002-4-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241023172150.659002-1-yazen.ghannam@amd.com> References: <20241023172150.659002-1-yazen.ghannam@amd.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: BL6PEPF0001AB4D:EE_|IA0PR12MB8863:EE_ X-MS-Office365-Filtering-Correlation-Id: 06215daf-5333-43a6-f8a0-08dcf3873809 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|7416014|36860700013|1800799024; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Oct 2024 17:22:06.5298 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 06215daf-5333-43a6-f8a0-08dcf3873809 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: BL6PEPF0001AB4D.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8863 The check for early_is_amd_nb() is only useful for systems with GART or the NB_CFG register. Zen-based systems (both AMD and Hygon) have neither, so return early for them. Signed-off-by: Yazen Ghannam --- arch/x86/kernel/amd_nb.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index 37b8244899d8..65884d0613f8 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -385,7 +385,6 @@ static int amd_cache_northbridges(void) */ bool __init early_is_amd_nb(u32 device) { - const struct pci_device_id *misc_ids = amd_nb_misc_ids; const struct pci_device_id *id; u32 vendor = device & 0xffff; @@ -393,11 +392,11 @@ bool __init early_is_amd_nb(u32 device) boot_cpu_data.x86_vendor != X86_VENDOR_HYGON) return false; - if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) - misc_ids = hygon_nb_misc_ids; + if (boot_cpu_has(X86_FEATURE_ZEN)) + return false; device >>= 16; - for (id = misc_ids; id->vendor; id++) + for (id = amd_nb_misc_ids; id->vendor; id++) if (vendor == id->vendor && device == id->device) return true; return false;