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Peter Anvin" , Ingo Molnar , "Mario Limonciello" , Thomas Gleixner , , Yazen Ghannam CC: Jason Andryuk , , Penny Zheng Subject: [PATCH v3 0/2] x86/amd_node: Fixes for virtualized systems Date: Tue, 25 Aug 2026 17:48:01 -0400 Message-ID: <20260825214805.39148-1-jason.andryuk@amd.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00003AE8:EE_|PH7PR12MB6906:EE_ X-MS-Office365-Filtering-Correlation-Id: 2224d6ac-212c-4e25-e319-08df02f291c6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|23010399003|82310400026|1800799024|11063799006|56012099006|10067099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.199.90.133;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:unknown-90-133.xilinx.com;CAT:NONE;SFS:(13230040)(36860700016)(376014)(23010399003)(82310400026)(1800799024)(11063799006)(56012099006)(10067099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: A39sWqHenn7IBZXgtRoQIfpPubWUfXULmLubIcHLALbam9ov7KPsTofB0bhelactb59PJP9RdMX7wDpLeuXcxPXKUkemzibaZeU3qK48UdrvYc64k2rgx6Vagd7C+rQhH+yIjaTPnoQ0TnJsKqSDxAqIlsg5AR+fobxUp/uWgJO04y1vbCYoDyyz2UXFaH+tZFUcNXHFDH3KjRaYqlpYHaxN5UNAppy0m59AfN084pQ8c8dxkXrl+j1ZjIQX2aFIsHgjCEGVbQAhSbyCbToTUFvzy0nKCawLqS2mT1RKQvuGIIXCo83u81to/vrAztlMp0RXiImviHTm071CID0OJvkl1AjMjN5uspMHqh9QYUECLhTaXdd3sV4t05mSzBi/wxqAS7wGSmHBSVr+MXxvb7y2rv4LHEtaKUGfO0ODnEub664iO84bpFTBwWbXYP0n X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Aug 2026 21:48:16.0299 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2224d6ac-212c-4e25-e319-08df02f291c6 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[149.199.90.133];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00003AE8.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6906 For v3, Add newline to warning. R-b Yazen. For v2, swap the patch order. On my test system, I see SMN accesses from: amd_pmf_probe() - read amd_pmc_probe() - read acp_acp70_audio_probe() - write Jason Andryuk (2): x86/amd_node: Avoid divide by zero on virtualized systems x86/amd_node: Remove smn_exclusive arch/x86/kernel/amd_node.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) -- 2.55.0