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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 1WOuWWbb6L1UUoegrrHRmhPTEMPHUMoKMfhYNxMtRyqNFkxtuK/3H01pgsZ34I3RLcX2BAtkUXBDW1xvnQutl+TPKzcT6B60+igtpf+cwNhAx7CxydtJnytcu2NtwccHKWgdV4xPke+fnRXOUccyUnZKsaw+7FqyYpAXuJtbIWVs7wDnOSpUO6iyZZ1tXKPmLfVK0rr2/tSWoXcY8XC4JUyNzEje6I/4msG9CHj/ob+LknS7stJbLK+IOlozsGJ+sLNvP+EG0q7zVIbylPe721h/TLqgFYIFG2LlmrT9NhiJ72ehyJ8W4OJyFqb5jKDCaPUkgNaLrhWgzAo3E5rLSlr/X+6L579b7owDZPiQurmDmc7t9nh8SFIEzq2rg6AIDU4bxurymIMgVmdvOxU9AGfXMVz3QksV/E82qcQCLxX00kHG3BhEKobueVziR7HG X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Apr 2026 16:26:26.3269 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a6fe3c4e-5ee2-4257-748d-08dea6d539fe X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: DU6PEPF0000A7E1.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS4PR08MB7408 Hello Sumit, On 4/30/26 16:24, Sumit Gupta wrote: > CPPC v4 (ACPI 6.6, Section 8.4.6) adds two optional entries to the > _CPC package: > > 1. OSPM Nominal Performance (8.4.6.1.2.6): A write-only register that > lets OSPM inform the platform what it considers nominal performance. > The platform classifies performance above this level as boost and > below as throttle for its power/thermal decisions. > > 2. Resource Priority (8.4.6.1.2.7): A Package of Resource Priority > Register Descriptor sub-packages that allow OSPM to set relative > priority among processors for shared resources (boost, throttle, > L2/L3 cache, memory bandwidth). Parsing the full structure is not > yet supported; such entries are marked as unsupported. > > Add v4 _CPC table parsing (25 entries) and update REG_OPTIONAL to > mark the two new registers as optional. > > Signed-off-by: Sumit Gupta > Reviewed-by: Mario Limonciello (AMD) Reviewed-by: Pierre Gondois