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Peter Anvin" , Ingo Molnar , "Mario Limonciello" , Thomas Gleixner , , Yazen Ghannam CC: Jason Andryuk , , Penny Zheng Subject: [PATCH 0/2] x86/amd_node: Fixes for virtualized systems Date: Thu, 6 Aug 2026 12:01:55 -0400 Message-ID: <20260806160159.230453-1-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: BL02EPF0002992C:EE_|MN0PR12MB5809:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ca56ddc-cc5d-4827-df39-08def3d43306 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|82310400026|1800799024|36860700016|11063799006|56012099006|10067099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(23010399003)(82310400026)(1800799024)(36860700016)(11063799006)(56012099006)(10067099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: tFXy1cBqu5aqUe7ciXiIaBEphAWM+KrMIMCEpKIGegkGbnIEt9jcPXEiup4NOMTp2mjJeRFBOkbC3JzQH2xLdNmpkwjb9D1ZO3P0gkYpGE89R7cTQ3bczIiUEHy2MtfEAWlIKufHlo1U4d955ZfTmKUIfMt5j2IzLOYJMvveB/g0IMHRKHJoErZQc5Ci3jcEH7eyDYJY1SRHQ6Nl0I7nENpY96WjiQNT6pRoqJJmOORv/W8XP2Efbo7s1kcBCdCagk1Vn42gCD6PM5YlkD5Uvi+qtJ908ed6XB4chZshg44WwLwxBxG4eRWhjV8h6JiQcIIxMIIssBbrbdLmDQaB8SxD69j0BfxGYXrDDzFa1eWdH35sGTw1GzH2N5trKjBDQ79Dn0AmG6aFrIrVIjG/QwsqE0JV4XZAlO1Jy4Wo1kZndRO4z0y3lx+l/tsb35Dc X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Aug 2026 16:03:04.7444 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2ca56ddc-cc5d-4827-df39-08def3d43306 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0002992C.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5809 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: Remove smn_exclusive x86/amd_node: Avoid divide by zero on virtualized systems arch/x86/kernel/amd_node.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) -- 2.55.0