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Fri, 17 Mar 2023 18:26:28 +0000 Received: from BY5PR11MB4274.namprd11.prod.outlook.com ([fe80::5c78:a264:4cea:6fa5]) by BY5PR11MB4274.namprd11.prod.outlook.com ([fe80::5c78:a264:4cea:6fa5%5]) with mapi id 15.20.6178.035; Fri, 17 Mar 2023 18:26:28 +0000 Message-ID: <5be75880-b96b-9ed1-b006-93eb84458abc@intel.com> Date: Fri, 17 Mar 2023 11:26:26 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0 Thunderbird/102.8.0 Content-Language: en-US To: "Dixit, Ashutosh" , Umesh Nerlige Ramappa References: <20230316010101.2590309-1-umesh.nerlige.ramappa@intel.com> <20230316010101.2590309-3-umesh.nerlige.ramappa@intel.com> <87jzzgvy8k.wl-ashutosh.dixit@intel.com> From: "Belgaumkar, Vinay" In-Reply-To: <87jzzgvy8k.wl-ashutosh.dixit@intel.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BYAPR11CA0105.namprd11.prod.outlook.com (2603:10b6:a03:f4::46) To BY5PR11MB4274.namprd11.prod.outlook.com (2603:10b6:a03:1c1::23) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR11MB4274:EE_|DS0PR11MB7622:EE_ X-MS-Office365-Filtering-Correlation-Id: e42f632e-a912-4665-42ab-08db27151f99 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Both RC6 and MC6 > individually or collectively? Yes, we can toggle both independently in BIOS. > > What happens if bios has disabled RC6 and i915 enables it: just that it > will bust OA? Yes, since OA init will rely on this information. Thanks, Vinay. > > The patch itself LGTM if the above is true, I can R-b it after I hear about > the above. > > Thanks. > -- > Ashutosh > >> Also, retain this value across driver reloads. This is needed only for >> MTL as of now due to an existing bug in OA which needs C6 disabled for it >> to function. BIOS behavior is also different across platforms in terms of >> how C6 is enabled. >> >> Signed-off-by: Vinay Belgaumkar