From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B775AEB64DA for ; Fri, 30 Jun 2023 19:31:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232302AbjF3TbD (ORCPT ); Fri, 30 Jun 2023 15:31:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33286 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231537AbjF3TbC (ORCPT ); Fri, 30 Jun 2023 15:31:02 -0400 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2075.outbound.protection.outlook.com [40.107.93.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6EDC53AA7 for ; Fri, 30 Jun 2023 12:31:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=oenO8rJLy9/lgRnzRnXHF4kVYeZrSXzC1Iw2S4hmkCrY8Az/OnwgB+I/tpxtDgf/kCVnGgZN+9szJVgMphnYV7Sj5+uuN/m6diyCnUvNLcy5JItJsYMc9W4Udlhjm5m1Gewba3mqgnWRouv4Jym+OJr8lyRD6/L5n79UmIIMhBb8iroY2B5bM602+3W3aa22qDpe84B9XKuUlQQVHmyBGI48kmkZlSm84wCH6HIvvK3mmzMYbym8MY05oDU07dPgCh09UIpapST3D4XdzAoph0HiX4inejnfYQoCVosloFySfVtgdScihTzqP6+uo4Fh4ZKjZZMtiyOgFbCqs1NKVw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=YRsBW07TVFM+MBlrCYLsueFGoG+sV8NnagoV3dhc/ok=; b=FG0RzVk/gMBheu80DYtaoUOsGgXZ5ZVUuuNjTQSA1gyS3dBuqtNPrBFuAx7l/k0jZWR5FGL6qU5EiaJRwRmWMF7wxxiwuPztCCKkXOZntRWva/2cI2nDMR72HSG8JwprZNiCnzqz/fshNjsqDKgq+eD/NgkGW3T0zmco4tGSdbFQHZr0j1+JuY98ut/zi5rpdbxvdkKGafOKZ3wC1c93hYnD+hh0iMztcJ4+1O4S+R5z+R2adC/EjiiKcYmaHcrCFsbahv1HlvNBBfaw9Pk/ulB57BeoWurAyL6k89E+rltU86TRQLJ9txAi+MKnHaXQLJzHON/PH+Z3SX5LcLFmnQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YRsBW07TVFM+MBlrCYLsueFGoG+sV8NnagoV3dhc/ok=; b=ARXvzFVeVeT3qf6hK73VosOy0DstffvNQsKV4FN7mA0IOLh4MamCb//32wnOfl1DxBJOf9YO+1z8MFVcL/LyGsCum0ZZOUYk3rXuPLNPYkZZdYfu6yIpkx03sFJ4GtPoCxlLglXItmFWEd94XETRcnFp4T4rxMNUM44zJlK3pAs= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from MN0PR12MB6101.namprd12.prod.outlook.com (2603:10b6:208:3cb::10) by CY5PR12MB6132.namprd12.prod.outlook.com (2603:10b6:930:24::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6521.24; Fri, 30 Jun 2023 19:30:59 +0000 Received: from MN0PR12MB6101.namprd12.prod.outlook.com ([fe80::dfcf:f53c:c778:6f70]) by MN0PR12MB6101.namprd12.prod.outlook.com ([fe80::dfcf:f53c:c778:6f70%5]) with mapi id 15.20.6521.026; Fri, 30 Jun 2023 19:30:58 +0000 Message-ID: <6faf3773-d974-4822-152c-0af2247cabec@amd.com> Date: Fri, 30 Jun 2023 14:30:56 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Content-Language: en-US To: Bjorn Helgaas , "open list:PCI SUBSYSTEM" From: "Limonciello, Mario" Subject: When it rains it pours Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: DM6PR13CA0037.namprd13.prod.outlook.com (2603:10b6:5:134::14) To MN0PR12MB6101.namprd12.prod.outlook.com (2603:10b6:208:3cb::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN0PR12MB6101:EE_|CY5PR12MB6132:EE_ X-MS-Office365-Filtering-Correlation-Id: de737797-7adf-4283-9cea-08db79a087fc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN0PR12MB6101.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(4636009)(396003)(346002)(136003)(366004)(39860400002)(376002)(451199021)(26005)(66476007)(66556008)(8936002)(6506007)(36756003)(110136005)(478600001)(2616005)(83380400001)(186003)(6486002)(4744005)(2906002)(41300700001)(66946007)(316002)(31696002)(38100700002)(5660300002)(86362001)(8676002)(31686004)(6512007)(45980500001)(43740500002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?NmV6RVA0bi9CVHY1YlN3dWJDQWloY29qWCt0TGN6OUxLOEttSDZsV3piZ0hG?= =?utf-8?B?TFlrcDJ0cjBlSHprZVBYMkVsdjV1dTIzRWdDMW51OXdlckpCS0k2aGxyMHlE?= =?utf-8?B?SWF1RGlSU1FLZVFpUk4xa2FFSU9lWWtZdVU1S0VKc3RBOGlHV3RHQ3ZCR01a?= =?utf-8?B?dFVKVWdjRDYwRFM2Ukt0V0IwR2Q4NVN5RVNGWXZ5TVNsU2FUSDdKNVh1bGJ2?= =?utf-8?B?TG5nQnhNOXlBUG1lcXdHRlRhM2tTV3NQNldtZVZydnpNK1daRnd5Mm85MU05?= =?utf-8?B?enk4djRPQUFLTThyemtBSkVkaHZKYXljbHpQLzlZV1ZtcVdxQmV4SEN2MEVJ?= =?utf-8?B?V3ZMVU5WQm82MThRaFo5UkdjcFFQS3NMMVJIOVZHdXZldkVYcGEwU25mM2NP?= =?utf-8?B?RThKOUxkWjBrSnIzeGhDYnlPK05UVERhak9yM3JGYWdpLzZ3THNieFUzNncz?= =?utf-8?B?azh0VlhMUzREU0lLb2tVQ3NiTkFlTEgzSzFnQjlEYjF5cmh5QkhyVVhIM0Zo?= =?utf-8?B?M3JHQXNESWlDOGcrRzZ0dkxTWVdOT29iR09sYkd2d1NPUGVSc2NCQ2pVejd6?= =?utf-8?B?UEdwZVJVOG1rd01YK3NUUWlTMmE0Yld1cVUzMnl1cWgxMmhrVTBvWFhrMmpQ?= =?utf-8?B?S1BsNWdUMWJobWQrUFo2cUZkV3AwM2pJbkdMVEVQQ1hVdUZaUDk0WGVrODR1?= =?utf-8?B?Z2VDNnF2VU55ZVZCV0F2dldvU0dWbHVUcG1WZTJodmlWemg3QnlpYkJWSlBj?= =?utf-8?B?QmFPUEZsS0xFV3VuMUVtQ3FMQkNncVVySit3R0c5b2ZrMWZFdHhnYWhydFhP?= =?utf-8?B?WHBTMFB1N3NXNmZ3dFY0UGNCdW9qTDF0UjYvd1JXUGRQL3BTWEJyS2ozY2dm?= =?utf-8?B?bDNnYWFxQWlXUXdxRHVIejZST1pnV0w3NVFHQzJ3WUtQOFovempSSGtUUmR4?= =?utf-8?B?RVNMYjFuemovME55U25aUFJHUnVkZ3ZvaERjaFJBd3VSdTlmcXBhbnM0Vk1O?= =?utf-8?B?QXpzOXFvR2MxbkNCSUZ3T3FrczZ6ckdrMVZ3RjJ2YmxRMkg0RDd4UmVHZUdU?= =?utf-8?B?ODdsR1NtSThLbWY4RnRWV3JqaENxR2FkUzZLYWF4QWF2VzNMckhDUzVqMEl6?= =?utf-8?B?SnByaG1BRTZnZERaL0t5dkhJUDVydVNUY2o0Vmx2Y2ZYYlllS3BUdlFZTTJw?= =?utf-8?B?SkRFTHUzZnNkSGtkdVZzYXJmeVVoRk1WcjV2b1l3TDZqb3Z3K3NPYnJWNzBu?= =?utf-8?B?UGNZWG8xV0NhYWJVRHJrQTRleWEvYlhjNTdaZCszRnY3Uk0xTXltaFlpYXRE?= =?utf-8?B?UmlpQ2pYcno4OUFDM2tPeUZNV0NpaDV4WWlXcThhdTRodGdNdTVnV2ZkbVdh?= =?utf-8?B?cHhRREtPWFM5S3BFZVNER25OblpUcWg4c1o2UnlYYTJ6ajlyMGlKWUxUTVBF?= =?utf-8?B?V0pEWGFBU2lNd2J0VWFVV3JPejZEa0QvbnVsMzd2ZFZ0bWJ0bGFtdUpscDQx?= =?utf-8?B?Sm5qY1ltMEduRzVkZWdNMHFKN3JKTCtSNFJMZGpXdlNLRis3elpVakVlUFpD?= =?utf-8?B?QklaTG5UOGMxWWxueklUc3llYTErUHJkV0JzekNKWStLYjBaaE92NHdPWXJE?= =?utf-8?B?WFdtUmUvaCs1Zm05Y2xYT01RK0xGU2RPTXpqMERvMmd6OStxc0ViN2RqRkZG?= =?utf-8?B?MjRhZlpSRFhBUWIyRzIreDJDdWpoZC9yMkNCM0cyWXJOeVQ3NnJXd1RSK3Vz?= =?utf-8?B?SXRuTTRGYWh1a1NsV2hGZ2JuZ2k3Y2dYa2Q1VXNvckJUOWdsM1VLVzJHR2Mw?= =?utf-8?B?S00vSTVmQitjRDNUQ3RMcFVsdFRHWlhKR1FOVkJ5SE9BZ3FxQjBFaStaejBI?= =?utf-8?B?c3JHWm04bmJoaWJwZUs0WHVvbFkzYjZUUmo3U1hEcnFXSDdVb285OW5KamxN?= =?utf-8?B?dXBjZ0V6eFB2T25nWklucG1EUGpqellkZCtXU2dxQ3YvalVuUUJCV1VhVVhG?= =?utf-8?B?UWtCempySEZVRGtUY1IrdW9Mb2FuSkFXRHBSRzlNUUozOFR5NERsVlVyKytk?= =?utf-8?B?aGdLUFRRbjFaS2FRU3lUVkordUpqeXY0ZXpPRUppQWN6R3c1ZENGSVJQcjNk?= =?utf-8?Q?BZlJ4fZmbTSyMU6zwZuTTzDPq?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: de737797-7adf-4283-9cea-08db79a087fc X-MS-Exchange-CrossTenant-AuthSource: MN0PR12MB6101.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jun 2023 19:30:58.8497 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: SgDlkxZyuMArd3kWYeWYEMzUUvrHgBpZ+FDjkunEiXDmZy5b8WkwlfbMPcSu7AcBwRXmC9WyM9pLD4UmkeWteg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6132 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Bjorn, For the _REG change that went into Linus' tree I was recently made aware of another system that it helps. This system was appearing to hang during bootup which evaluating the USB4 _OSC. This hang happened on both the 6.1 LTS kernel and 6.4 final kernel. In looking at the BIOS debug log shared by the reporter I noticed that the kernel isn't hung it's just that the BIOS was waiting to be given the ability to access the config space. Backporting just that _REG patch onto 6.1 LTS kernel fixes the issue. I'm encouraging the BIOS team to try to come up with a cleaner failure path for the lack of _REG being called. However there is always the possibility they can't or choose not to and people try to boot older kernels and fail. Given how severe this boot issue is compared to the original suspend issue that prompted the patch I wanted to gauge how you feel about the risk of taking this change back to stable. Thanks!