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mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from DM8PR11MB5703.namprd11.prod.outlook.com (2603:10b6:8:22::5) by CY8PR11MB7106.namprd11.prod.outlook.com (2603:10b6:930:52::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8534.34; Wed, 19 Mar 2025 14:59:36 +0000 Received: from DM8PR11MB5703.namprd11.prod.outlook.com ([fe80::f734:e507:3083:e454]) by DM8PR11MB5703.namprd11.prod.outlook.com ([fe80::f734:e507:3083:e454%4]) with mapi id 15.20.8534.034; Wed, 19 Mar 2025 14:59:36 +0000 Message-ID: <337176d1-41f4-481e-b81e-0f818f45a4ba@intel.com> Date: Wed, 19 Mar 2025 20:29:29 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH i-g-t v4 2/2] tests/intel/xe_pm: Add a check for power management capability Content-Language: en-GB To: "Bernatowicz, Marcin" , "Jakub Kolakowski" , CC: Adam Miszczak , Lukasz Laguna , "Gupta, Anshuman" References: <20250318150108.1055169-1-jakub1.kolakowski@intel.com> <20250318150108.1055169-3-jakub1.kolakowski@intel.com> <30298e71-5dc6-477a-b3ef-73f0996b9e35@intel.com> <5c0a4a66-8e05-4f14-acc0-96487cc43590@linux.intel.com> From: "Poosa, Karthik" In-Reply-To: <5c0a4a66-8e05-4f14-acc0-96487cc43590@linux.intel.com> Content-Type: text/plain; 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Currently if test is started on configuration >>> that does not support the PM capability it doesn't skip, instead >>> depending on test it may fail, abort or timeout. >>> With this change test will skip with a clear message why it did. >>> >>> Cc: Adam Miszczak >>> Cc: Lukasz Laguna >>> Cc: Marcin Bernatowicz >>> Signed-off-by: Jakub Kolakowski >>> --- >>>   tests/intel/xe_pm.c | 3 +++ >>>   1 file changed, 3 insertions(+) >>> >>> diff --git a/tests/intel/xe_pm.c b/tests/intel/xe_pm.c >>> index c2026474d..70f0613fb 100644 >>> --- a/tests/intel/xe_pm.c >>> +++ b/tests/intel/xe_pm.c >>> @@ -146,6 +146,9 @@ static void vram_d3cold_threshold_restore(int sig) >>>   static bool setup_d3(device_t device, enum igt_acpi_d_state state) >>>   { >>> +    igt_require_f(igt_has_pci_pm_capability(device.pci_xe), >>> +              "PCI power management capability not found\n"); >> >> Hi Jakub, >> >> As per PCIe Base spec, all PCI Express Functions are required to >> support PCI Power Management Capability. >> >> Only legacy PCI devices wouldn't have it. >> >> Can you share details of failures without this capability. >> >> All Xe supported GPUs are PCIe complaint, this check may not be >> needed at all. > > This happens for runs with Virtual Function (VF) passed to Virtual > Machine (VM). > > "9.6 SR-IOV Power Management > This section defines the PCI Express SR-IOV power management > capabilities and protocols. > The Power Management Capability is required for PFs as described in > Chapter 5 . > For VFs, the Power Management Capability is optional." > > -- > marcin Okay, LGTM then. Reviewed-by: Karthik Poosa >> >>> + >>>       dpms_on_off(device, DRM_MODE_DPMS_OFF); >>>       /* >