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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2BAA2C61DD3 for ; Mon, 31 Aug 2026 16:27:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E271610E9EC; Mon, 31 Aug 2026 16:27:41 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="iYY90gOu"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.11]) by gabe.freedesktop.org (Postfix) with ESMTPS id 209CE10E9EB for ; Mon, 31 Aug 2026 16:27:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788193660; x=1819729660; h=message-id:date:subject:to:cc:references:from: in-reply-to:content-transfer-encoding:mime-version; bh=jV83+ntR8tQtx76dXxxGNPw0C+JDIEoEXd1a86eZYm4=; b=iYY90gOuia+Z5vnwlYAKaWPGFTgtdtG5jq9TEhyCg05WhD6qgbpuBaa1 IWc86RGn/NjTjuFkuoe8EVC8lznB1iDCOarpoeO9tOfxhupBJFh3lias0 w/MMz+RsPsH7h4g3EVYiUQv0aY5V2px6EwaQMOE8NRXoaSyXWayVNFxoO Xzh/sa0fB08itxPubIE8OGHXTU0BC8vOyTdqLxNvlSWiAWtOZzoN7jLaa 45JSpNNlf1rPtp0JF8uUzZXLJBijbkWM/12suE57ckA4CUk/9Vrge0KKb NFLDOTSEc3L4Tu3TIBXm6OIv0WTAam3HU4LMosJTyyCFEK5gft7uiCGGu w==; X-CSE-ConnectionGUID: tzhK1fs0R6q6ePBNxUe8dQ== X-CSE-MsgGUID: OB6/TS+KRBWrr/j5oKYg1g== X-IronPort-AV: E=McAfee;i="6800,10657,11892"; a="98942285" X-IronPort-AV: E=Sophos;i="6.25,254,1779174000"; d="scan'208";a="98942285" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 09:27:40 -0700 X-CSE-ConnectionGUID: ueMqM5wARd6o1SM/2unStw== X-CSE-MsgGUID: bsWy5UfeTmuat6ScIZo6OQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,254,1779174000"; d="scan'208";a="265130392" Received: from fmsmsx901.amr.corp.intel.com ([10.18.126.90]) by fmviesa010.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 09:27:39 -0700 Received: from FMSMSX903.amr.corp.intel.com (10.18.126.92) by fmsmsx901.amr.corp.intel.com (10.18.126.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46; Mon, 31 Aug 2026 09:27:39 -0700 Received: from fmsedg901.ED.cps.intel.com (10.1.192.143) by FMSMSX903.amr.corp.intel.com (10.18.126.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46 via Frontend Transport; Mon, 31 Aug 2026 09:27:39 -0700 Received: from PH8PR06CU001.outbound.protection.outlook.com (40.107.209.63) by edgegateway.intel.com (192.55.55.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.46; Mon, 31 Aug 2026 09:27:37 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=HRSaJpLFewkG6bE4fWaDCM9RkQjMrnbwmfUe9h6jtn+/l5lP1m2Vp20tOF5aYyuCGzIIJWtwCzUebWCVaGwyPzcrH/tRADdNqtE8QeEvHrnbmlc7eGwgMAJRVl+lCKPNF3bJz88xEAk5AEMsmJSOq24Ml8B7oA+UhSWIaZf30bTSQ7lXoirk5HRIIDIkjFZya+G3aLOlQGfeJqFkL9F2qNHQs7UeB3oblPt/jl37YxbRmTWDdODhI1Lff3xmyPc8fgcxvAD6qizmQLKBlq/JxbBoojtzZRjq2/2L5XEcjh8JXWxJW9UMiAXBAjPvx/oJfPuARL/B1UVpkAxu0P75xg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=alIlZ98Jl1Q2avDgoR20ftRUQ/l9KpOMgxq5K+4zgvI=; b=tCOZVc2gI+ZO4jhJPI53KD6G/Mki+7Kkv61usuj5jG7ZcSJ/ldINVZUnSGWt8sKNTYINf7D1RWvSzg7NcWfCxuAxfKuWCVKKaIFZDRJQODNDemKD4GZ7Sss10FS2AdZ7BiwPmtDcyBHn0uBHd6qmg7GSFMPlL7OJ/zKJT2QruCUGpkOJYjSZ5fZxq4AsP7DnPxtl6z+gZOzmdEQlTqKsn4ZbqS9/uceO2C4ioqmESL5S3LTGAGLEdHH+1Yk5cT6hH5Zw0zNUKhViEvkiz9LEdWIsQX8ifGDD5BGDYSHE08olFueH2tMeX05MqT5Ddc5dMuox6YU5266Wu6kbqfdf5A== ARC-Authentication-Results: i=1; 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 CH0PR11MB5249.namprd11.prod.outlook.com (2603:10b6:610:e0::17) by IA1PR11MB7679.namprd11.prod.outlook.com (2603:10b6:208:3f1::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.360.13; Mon, 31 Aug 2026 16:27:34 +0000 Received: from CH0PR11MB5249.namprd11.prod.outlook.com ([fe80::a665:5444:d558:23c3]) by CH0PR11MB5249.namprd11.prod.outlook.com ([fe80::a665:5444:d558:23c3%6]) with mapi id 15.21.0360.008; Mon, 31 Aug 2026 16:27:34 +0000 Message-ID: Date: Mon, 31 Aug 2026 21:57:26 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] drm/xe/hwmon: Increase timeout for mailbox power limits To: Rodrigo Vivi , Raag Jadav CC: "Tauro, Riana" , , , , , , References: <20260729171546.3368457-1-karthik.poosa@intel.com> <20260729171546.3368457-3-karthik.poosa@intel.com> <2c61329e-a7d0-4524-b585-5d10fd970ffe@intel.com> Content-Language: en-US From: "Poosa, Karthik" In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MA5PR01CA0250.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a01:223::11) To CH0PR11MB5249.namprd11.prod.outlook.com (2603:10b6:610:e0::17) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH0PR11MB5249:EE_|IA1PR11MB7679:EE_ X-MS-Office365-Filtering-Correlation-Id: 55889b2e-722c-4038-a0da-08df077cc33b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|23010399003|1800799024|366016|3023799007|10067099003|4143699003|11063799006|56012099006|22082099003|18002099003; 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:CH0PR11MB5249.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(376014)(23010399003)(1800799024)(366016)(3023799007)(10067099003)(4143699003)(11063799006)(56012099006)(22082099003)(18002099003); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?b3JXS1FSb3crWncyeE4vVTI2SDEwWkJpdkd1dENmK1lxMHFEVjdnQ2ZiU1Y4?= =?utf-8?B?RUZLREROY2gxSExGbHQybGRZa2R2cDBwUTEyeTNsNjRROUNwcGJsWnBEaXRt?= =?utf-8?B?WG1BSXBQSWluZi9JZmZocFpXM21YYnlIUm1aakhEN0NZMmZhNnAvemw4NkdL?= =?utf-8?B?UW5pM2UzME1RZGNzTVdQNnQ4cDd5K2lKekN3T25POVJLKzY0YnNtREZBVGFi?= =?utf-8?B?allCUUt4ZjljSWFuRHR6VXBFM2VPRXp3R3RpelB2UmQwNFpLMFJ0eXhScWxq?= =?utf-8?B?NWkrejFBQ3A4WWpnRXRRV1JmMkkwajNTQXZFVmxVak1iQ0Q2Tk1QYUc1ellh?= =?utf-8?B?RE1hYnhLZGhBTVpWWWZXYnNSTlNoRHZ2QlIraDN5WndWZllYOTYwY1NLekRI?= =?utf-8?B?eTJ4b2dkcnZubDBpd0NEOG9SREJtK0dvNWVHdDlwalpMa0NDbGwvckJOZTlu?= =?utf-8?B?NmViWjhPeGNxSVRLMTJsanM5ZVlsQVh6YnFrUlp0RHpjQ2d2TC93ckMybGlG?= =?utf-8?B?anJZbG4zc2NFWmhudStnV00xbzNZOXZOOUpUTmorU2VNUTdaREllbnBMbm5a?= =?utf-8?B?TEdlSmdNYXQzcFZjS3lyYWQ3ek5CQ2JMd21IRmFsamYzbG5iV0Z5cE1tUFRp?= =?utf-8?B?cHNhb3hidDhsZ3FVWjlCc1N5dGtRM0t1bHVZNG5qa1NIQlNpZG9xQ0JLZVBK?= =?utf-8?B?bWZNMTgwZFZYQ2hZY2dPTldVSnRZUWFwU3dBc0hwOFZCcFhueUNYS016RVJx?= =?utf-8?B?bkZYNURLaGo5dDhBV29TZVNSYi9rb1drcUdkSy9PUlphU3BqN0RQNEtCSHVG?= =?utf-8?B?VXA1WS9Ec0RmcGhIakorWjh1V1YrS0p5aE4xSlpBWVBIdDQ1TldIZ0FWTGRX?= =?utf-8?B?UWtlMWdDRitBbUlWNitQMEpha1lpZEZZV2NDOVY4YUd4RXI1Vm1oZXRBVytI?= =?utf-8?B?Ym9tQ1dqUENaRG5GWWt6anJrSDVkRnlnbnY5cE1BckVIRER1YkYwL0piZ2J4?= =?utf-8?B?RFBaZ0RMT2lwVkRHSG9tWDFiclpudGVReW5QNUZBNkhVemxUVEZEampNQzM0?= =?utf-8?B?cC9tRXlqNWFNdHdYdlp2aGl6QWtIS1E4czZ0K3dtbWQyUUJUY0ZJRzg5VDEr?= =?utf-8?B?dm16blg3Q0o1N05oNC9KWEtsRkFyWE5TVTA5RnhMYWo1V3h1RnRBTlJUaHNU?= =?utf-8?B?US9LbEluVisvcTA4TDRhRXB3ZE1zUXlCT3p5L1BZUW1PMTNCV0xsdUVHcTc1?= =?utf-8?B?UGRpYlBqamx4dlhETzJISHpIdHBRZjU4QVNWTmRFNUJkUFRRK00yT3JLSHVh?= =?utf-8?B?WFdyZU1TQXc3cGcvbVZ6Z0U5UER0VlJwWkpicTlsUjNqK2htM0x6Z2luczRW?= =?utf-8?B?Wm5hNG1ZRzJpbmRDK3lzK0Jkakpxd21lbk1GWHkveXEzZWNSemVqN2xydVZM?= =?utf-8?B?S2pTb2JJNS9sNnBRN2ZYYU81QTdhWktwalB4KzB2ek14SVQzcVVlZjhOUHVs?= =?utf-8?B?ZDNNbE9wS0FRWFpBM1JRZ3gwTCthQ1lBL3FEbUtQMkZTMlJtSVNTL1lDdURP?= =?utf-8?B?UkN0bXE1Z3pmUjlqbmhSYzF2dXlncjBhUlNIM0xkYlBvbXNYZ3VQMUhZL2N4?= =?utf-8?B?RTd3dnZ0bkF6Z3RkczBTVjhheWtZS0doNkYzV0NKTFc1S1I4c1JZSWlzWG01?= =?utf-8?B?QnRqZjFKd1F5UWQ2TGErSFRvTUZ3aHQ0dndGR1JZaFo4OC9rdXVmOEdjYUVr?= =?utf-8?B?TTUxcSsydUVrVGNzT0lkQ241bUloYWZCQVpVYVlpRk4vbHBnQ3lSbUxhQ1I4?= =?utf-8?B?WTlFQ3hldTZ4QTl2aFRtU0RlZUw4MnZKNHFFNzJXc1EzdDdCRjRYYkdXdERw?= =?utf-8?B?VmdwMDRYaHludUM0akJicWdEeFR4SWk1TXJhcWpLcXNZR3hTU05kRE9jSTEz?= =?utf-8?B?ejFOVDRHUnBRYmJPZmVja0dvZFBsZTM3ZlpYQXJnZUFOVnhyaG1takNlMDUv?= =?utf-8?B?SFN3cFNVK3dwNU9yUnppMzlycFdSZ0xFaDAxdlVoYWtvZ3VDWVpIaUdKUkVv?= =?utf-8?B?a0FjcVh0T1I3ejFYSkJKRW9XZHJ2NTBmcE1udTZkZGovTFA0Y2NueFdZZVA1?= =?utf-8?B?V29ZZWxCYVVzVHFMMnhOUnh6bjA0cGhXVXp1V2N3YWxYS0RQbVplOHY1aDY0?= =?utf-8?B?dkMzazl1OWxSUk1kckk1NVdnZGJVTHRKS3IzQVRpNSsrZGdxWDQ3R1U1ZW9X?= =?utf-8?B?ZS9hcldhMHQyWEkwcDdsbGlBOGt2WFVtWUtBZEtrcWtlVjZ6Zkx2Y2ZCYk9C?= =?utf-8?B?bzYxS3krc05id2VRL3NzczVPeXRIWnpabzQvazl1SHh1ekl0cm5ZUT09?= X-Exchange-RoutingPolicyChecked: Z0svFXNPNx79983AyzSu4M5fYZ4GbzCi3XcTxaU+vRddbRXxQOxqp5p0s1sXoMtXTacBmi/qfnhqiteRYOyXG0CCt0AXCD1aiHDbSQpltz2tK9bpGMj47s3uvs10saHg+thed5XjV5ZVmqUODjIM6aLDmrd10q7nBqKKHL4fc7z77psEXNnCw1NurtZIjBkmJt8rvQQdfdgY793cfOse0Zian8ObxTVUU2eMJKaDWRaCGm9JPdinn2xRdEXQlpTncvm1J5jGcVFVTQBmr3geBRAn5tVLjFp2YqWz1Jkmjs6qxsR6FG4266PYJLD1X7bBY4Qqh8u2okana0UOZDmO8w== X-MS-Exchange-CrossTenant-Network-Message-Id: 55889b2e-722c-4038-a0da-08df077cc33b X-MS-Exchange-CrossTenant-AuthSource: CH0PR11MB5249.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Aug 2026 16:27:34.6568 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: hKR+RcPTOshZ48zRPw2KCQ1qgO0DVek4kmb/B/Zlpozn0XuXvciLtJbn82w/R73dQ40m2sB1moNCmu1EFWFIww== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB7679 X-OriginatorOrg: intel.com X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On 31-08-2026 19:28, Rodrigo Vivi wrote: > On Mon, Aug 31, 2026 at 09:41:45AM +0200, Raag Jadav wrote: >> On Mon, Aug 31, 2026 at 12:39:50PM +0530, Tauro, Riana wrote: >>> On 31-08-2026 12:24, Poosa, Karthik wrote: >>>> On 31-08-2026 10:59, Tauro, Riana wrote: >>>>> On 29-07-2026 22:45, Karthik Poosa wrote: >>>>>> Mailbox power limit operations can occasionally take longer than the >>>>>> current 1 ms timeout, causing sporadic failures. >> Why? >> >>>>>> Increase the timeout to 10 ms and rename PL_WRITE_MBX_TIMEOUT_MS to >>>>>> PL_MBX_TIMEOUT_MS to better reflect its usage. >>>>> Why is the timeout applicable only for power and not the other >>>>> attribute reads? >>>> Because the timeout is seen only with mailbox power limit commands only, >>>> default 1ms timeout wasn't enough here. >>> Any reason why this is not seen for the other reads? >> +1, these things should be coming from a hard spec with valid technical >> justification and not some random email asking us to do so. > Well, you have such high expectations :) > Sometimes we have to live with the empirical... while we hunt other teams asking > them to do their job correctly, of course... > > Interestingly enough, I just found in some of the many spread pcode docs: > > driver_to_pcode_mailbox_spec.html#mailbox-response-time > > """ > Mailbox response time > Mailbox response timeout shoudl be set to 10ms as worst case. > """ > > Perhaps we should simply change the default to 10ms. Investigation is ongoing to understand why some pcode mailbox commands occasionally take longer to complete. Until then, using the documented worst-case timeout as default timeout seems the better approach. > >> Raag