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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Sep 2025 04:38:57.8117 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ed1bea35-8364-4f5c-6063-08ddfa5b1c41 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: SJ1PEPF000023D9.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6022 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1758602376950116600 Content-Type: text/plain; charset="utf-8" Right now, no matter for code construction or hardware restriction, HW_ALL shall be the only expected values in _PSD for AMD CPPC mode Suggested-by: Jan Beulich Signed-off-by: Penny Zheng Reviewed-by: Jan Beulich --- v9 - v10: - new commit --- xen/drivers/cpufreq/cpufreq.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/xen/drivers/cpufreq/cpufreq.c b/xen/drivers/cpufreq/cpufreq.c index fe6bd7ff25..4b74f5590b 100644 --- a/xen/drivers/cpufreq/cpufreq.c +++ b/xen/drivers/cpufreq/cpufreq.c @@ -765,6 +765,16 @@ int set_cppc_pminfo(unsigned int acpi_id, goto out; } =20 + /* Right now, HW_ALL shall be the only expected value in CPPC mode */ + if ( cppc_data->shared_type !=3D CPUFREQ_SHARED_TYPE_HW ) + { + ret =3D -EINVAL; + printk_once(XENLOG_ERR + "Unsupported sharing type %u in CPPC mode\n", + cppc_data->shared_type); + goto out; + } + if ( cppc_data->flags & XEN_CPPC_CPC ) { if ( cppc_data->cpc.highest_perf =3D=3D 0 || --=20 2.34.1