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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 May 2025 20:49:08.4037 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 03676f94-a100-4ac8-131d-08dd925f9b8a 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: CO1PEPF000044F8.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5940 Content-Type: text/plain; charset="utf-8" Add a synthetic feature flag for Zen6. Signed-off-by: Yazen Ghannam --- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/kernel/cpu/amd.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpuf= eatures.h index f67a93fc9391..920e7d0d1976 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -483,6 +483,7 @@ #define X86_FEATURE_PREFER_YMM (21*32+ 8) /* Avoid ZMM registers due to d= ownclocking */ #define X86_FEATURE_APX (21*32+ 9) /* Advanced Performance Extensions */ #define X86_FEATURE_INDIRECT_THUNK_ITS (21*32+10) /* Use thunk for indirec= t branches in lower half of cacheline */ +#define X86_FEATURE_ZEN6 (21*32+11) /* CPU based on Zen6 microarchitectur= e */ =20 /* * BUG word(s) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 13a48ec28f32..93da466dfe2c 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -474,6 +474,11 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) case 0x60 ... 0x7f: setup_force_cpu_cap(X86_FEATURE_ZEN5); break; + case 0x50 ... 0x5f: + case 0x90 ... 0xaf: + case 0xc0 ... 0xcf: + setup_force_cpu_cap(X86_FEATURE_ZEN6); + break; default: goto warn; } --=20 2.49.0