Received: by 2002:a05:6358:4e97:b0:b3:742d:4702 with SMTP id ce23csp5288816rwb; Wed, 17 Aug 2022 14:58:53 -0700 (PDT) X-Google-Smtp-Source: AA6agR4Qkz9fB1cquadVVjX+I9F98j5l6IIvVJxssFAfR0pI4bIyoIQhgVXVJ9k7tijE+opw2rZ9 X-Received: by 2002:a17:907:8317:b0:731:2189:7f4d with SMTP id mq23-20020a170907831700b0073121897f4dmr31130ejc.468.1660773533495; Wed, 17 Aug 2022 14:58:53 -0700 (PDT) Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id s7-20020a056402520700b0043dc6af135dsi15133356edd.56.2022.08.17.14.58.01; Wed, 17 Aug 2022 14:58:53 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b="XTeDRI/W"; arc=fail (signature failed); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242168AbiHQU7I (ORCPT + 99 others); Wed, 17 Aug 2022 16:59:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242194AbiHQU6r (ORCPT ); Wed, 17 Aug 2022 16:58:47 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABED7AA4DC for ; Wed, 17 Aug 2022 13:58:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1660769909; x=1692305909; h=date:from:to:cc:subject:message-id:references: in-reply-to:mime-version; bh=mBwJhD8DDe3mLwzDNaIl8apMCv7l7dLEA8spAmSCnxI=; b=XTeDRI/WqJ4vNUwDFUjPAPoJk69hAGxok0AwRYOgeUpptEb/P18quTyP 9YzuJtC9v2gJi1L4u0PDz+HKzn+BO7xw3br3cp1gLbtP24ZVawIzH/6UH ZbmhRhtLODkZqu0pQlFH88hDY8/0rQx7y4sFcreFkrqnKWK0wMqoV4JST aU/nXojxRWD0rpZLNMsqm3TBagJEYxQEl5RJPetfh+L4TyTPPdnQOa+wr gaOSiK6Elp+q3DeooDOyGmAe5VfZc7nHWm+GOzFwFTXAod5E9mbuymI+o SegJO4L8ngpvrdyPmuWub1Gv1Jc7b2AcBJrEh4Z6jrlB2n9BFM5Io+4cc g==; X-IronPort-AV: E=McAfee;i="6500,9779,10442"; a="290170015" X-IronPort-AV: E=Sophos;i="5.93,244,1654585200"; d="scan'208";a="290170015" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2022 13:58:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,244,1654585200"; d="scan'208";a="710705655" Received: from fmsmsx603.amr.corp.intel.com ([10.18.126.83]) by fmsmga002.fm.intel.com with ESMTP; 17 Aug 2022 13:58:28 -0700 Received: from fmsmsx612.amr.corp.intel.com (10.18.126.92) by fmsmsx603.amr.corp.intel.com (10.18.126.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Wed, 17 Aug 2022 13:58:27 -0700 Received: from fmsmsx608.amr.corp.intel.com (10.18.126.88) by fmsmsx612.amr.corp.intel.com (10.18.126.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Wed, 17 Aug 2022 13:58:27 -0700 Received: from fmsedg601.ED.cps.intel.com (10.1.192.135) by fmsmsx608.amr.corp.intel.com (10.18.126.88) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28 via Frontend Transport; Wed, 17 Aug 2022 13:58:27 -0700 Received: from NAM04-DM6-obe.outbound.protection.outlook.com (104.47.73.45) by edgegateway.intel.com (192.55.55.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2375.28; Wed, 17 Aug 2022 13:58:27 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=DV9SDiGDNdiQ4H4Re5qD2Ca8bz2QaOq9VZu1L8mn3ZYdPnFhHyL5mvhAcbyl2pFvRoi9hahP94Lnyl6WFVeJxVTWeq3bdUzTb0/qHEAbp9svdwRFVe4b0DbfmNL3GmLvwozfRoFuuWbb9DRvbe6oFJbMPIWNxPW8z5CER9O8/pGuH/e4OKTpFL1L9r1x4Jn0X8H47cm/zMGDVWqV67cZw+d9Czi8bBM76vXumlEIfDyLSalmEeyqZoG/5b5CS1vxY4a8erphdySYDj5cwhlig4Vw/zxIpztpO9W6gyGtIKf01BqYTBDO+KmiDEiW6JghXGw2o9nUC4XyfcwCNvsgfw== 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=x7BoqDlEikX+k6xm4qyUI27Z5c59e6FBfOTqeSFnhZw=; b=GYV1cUXYY+C9yhcnfEMlqpzE5teqvAvaUssh325qxOIkYuUjBn8u3w2zpoIZb4mEVKqAdDgu8MjHBvo/RrBCSF7gvw3yCt3O2RSVN83mb3oNl08+UuTDBmquHq/d6y4W/n4kIgAGm9r2QO95PoeCbALmg6IJMpKmdTmKaDI5Ji9lbY93dd8GPbLZd3hCDxjgsiplUiUlql1qng4j9VqrkRizSTel4RVFBttVcjQmw52GVFQ9l8EDLZ9/v6+vDkEQkwG08gSXYKt8v8A05X4MhS5Z3ZmXi7yNG5k263pekEBVZkQJbl5s2hUsMVx5QVFlka3hZq2J+fSdKiVmEZ7oMg== 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 SJ1PR11MB6201.namprd11.prod.outlook.com (2603:10b6:a03:45c::14) by CH2PR11MB4422.namprd11.prod.outlook.com (2603:10b6:610:4a::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5525.10; Wed, 17 Aug 2022 20:58:25 +0000 Received: from SJ1PR11MB6201.namprd11.prod.outlook.com ([fe80::10da:929a:73eb:40ad]) by SJ1PR11MB6201.namprd11.prod.outlook.com ([fe80::10da:929a:73eb:40ad%6]) with mapi id 15.20.5525.017; Wed, 17 Aug 2022 20:58:25 +0000 Date: Wed, 17 Aug 2022 20:58:07 +0000 From: Ashok Raj To: Borislav Petkov CC: Ashok Raj , X86 ML , "Andrew Cooper" , LKML , =?utf-8?Q?=C8=98tefan?= Talpalaru , Ashok Raj Subject: Re: [PATCH] x86/microcode/AMD: Attempt applying on every logical thread Message-ID: References: <20220814120026.16118-1-bp@alien8.de> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: BYAPR02CA0068.namprd02.prod.outlook.com (2603:10b6:a03:54::45) To SJ1PR11MB6201.namprd11.prod.outlook.com (2603:10b6:a03:45c::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 31c15d03-7124-47a1-23cd-08da80933a38 X-MS-TrafficTypeDiagnostic: CH2PR11MB4422:EE_ 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:SJ1PR11MB6201.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230016)(7916004)(366004)(39860400002)(346002)(396003)(136003)(376002)(8676002)(316002)(66476007)(4326008)(54906003)(33716001)(66556008)(66946007)(2906002)(44832011)(8936002)(38100700002)(82960400001)(6916009)(5660300002)(86362001)(186003)(41300700001)(6486002)(6506007)(6666004)(26005)(6512007)(478600001)(9686003);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?zMSh+xKapu8iseY/VYkcVRwSTFMRnqG7VZvtFn6KplF8KnDNZruqgmtLt9ub?= =?us-ascii?Q?2wKThCPhwDxjRRMaDa71XLR83E3Jdq1kATpH8GRIYa9P1nMenrO/KVBzju7o?= =?us-ascii?Q?OCeTHi9BZwxApe7YSgjCkDMclb36+h85TyOmhG3fh+gnrAIvrSn4WSqophX4?= =?us-ascii?Q?J/o8mR+NK5AlrjD4KdfOajMFs91LJ+WeX+Mqn8GSjrAibOa7sQSRVS1zn6Ct?= =?us-ascii?Q?PWqsguCG1GU842zhE9iq1hsq5nOMgsv/ho0W+VOxKX7QidZfTHunYevUzZkm?= =?us-ascii?Q?pKt3ZFQaHild0R4YPlDjd1rfEKKk1+0CekC8O3b6ik+BGimpsY3KrXIV4E5L?= =?us-ascii?Q?s5uh2pKbZkoqXtwFEotXiQGPntdIIkDMUvqzxUUCLpHHOYeep86QpDIHlq1l?= =?us-ascii?Q?c5IK4+cdXYoZLHdC895rcrhGeR/UvepRj47FRrz1ciT5nc50xN/TxGxprpDt?= =?us-ascii?Q?g+8tPRNXYYayM7KRY4m11P/XeWOI5j/1IEyh8S0cVbsWRQTNQwMEN9NAdZRB?= =?us-ascii?Q?/Vcq9dDubqgYYpnCLKY3TbHaBGssECzg0apBsR+OGFVsxrCanIfmTzDlMiFU?= =?us-ascii?Q?YRfrLUTnbUtAGc5wX4z2qj1rHp2hm6W8Q7bAFR/4+zfG+7FLlkqzmpYyq5ry?= =?us-ascii?Q?USS1jtCy+p8+J9a2yaHVa98Y4YyyE13taSoYBNqSJZuKaz/2SEUDNzCMkcU7?= =?us-ascii?Q?I8Fr92wymSw93Wq18VrysGfTUNbvqezmxjisH/Kw1nYiYkE9kmsV2ToUoh5V?= =?us-ascii?Q?FYtH0lg9G2pCrM8EMZDKlvYI/lBEzmWR7crQaEeRCd8Oh/fVIJefsBsVAlJF?= =?us-ascii?Q?nACOxEPye10/xvZ/L+vk21p0uUwqvcys6Cmy0auO1gs4hTNb8m5Atqu9Q3ra?= =?us-ascii?Q?Q9/DYncODKz7f8jfZ5Lllu1WdEdhyG9NYrBfEMjqp8bqd2cyZJMz46Y0bLf0?= =?us-ascii?Q?qOEZl+nRU1ncGw9Shp9cWsDcZnAJ141yREy+P8cbIHwmrX/hsUTq3aQ05t54?= =?us-ascii?Q?p09cV/BhutNIb4MYwyl9V0E1e7jY6NdQTjJn904Mz13fyviwJhGHvnvx7Sx0?= =?us-ascii?Q?9u2yoPO3kR61d6lLr1/JYuNDEJUGyjdDQW2xA32l496Qo3AiricNv8ZUlCo8?= =?us-ascii?Q?Cryuoi0yjCTlZazmB0NVUt0f92jPx9f8xgkrpqi47WhhtzR4TXjicCce5dJe?= =?us-ascii?Q?8x6YkyTc9VjlG61vTqzrAC8UrEQPswfF9aoyfnqqKZ+NLzKuhKKDDxa9bpec?= =?us-ascii?Q?JRRFM0MENlaix3/Sn/QVL8qX+oT17RWV6ZfCIGZOSrCmfl08Hph4vzFhLldd?= =?us-ascii?Q?dsL1Df7i1fRJXr4i4yrIoomPyVPRqtJdFFxH5TynQLrEs1hO/oMYLpz9n8H5?= =?us-ascii?Q?Dcwhbka546rBGVJZ7b0mPy28NY9mTOHUE0JIvzOrBXrSgro/tQp2iJFtJ3KI?= =?us-ascii?Q?v2QkUlJoKFR3ltLopED11thaD4Hxi1N1j/Sw+Z93cSLsrz6J8c/rP4CBwxU1?= =?us-ascii?Q?ljGW6JRnDIJGHjRanwWNLj9HkrCOr/8RkIB2Z36oXIHgZFfAWzh1pAoyztW6?= =?us-ascii?Q?Jh5qwXYLq4VpKdNZ9qR3LXI7moM2yZWsiB/9YS3A90/3b7tI/+WpPzRBwGC0?= =?us-ascii?Q?0w=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 31c15d03-7124-47a1-23cd-08da80933a38 X-MS-Exchange-CrossTenant-AuthSource: SJ1PR11MB6201.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Aug 2022 20:58:25.2901 (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: 8fucahsPoK8TlH7PIH1pxcj92/cWeKh01GykxEs8UWu0CPWSTFlryPi5CHg/QsIhNu2JUKijfVoY7mtt/i+nIw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR11MB4422 X-OriginatorOrg: intel.com X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Boris, On Wed, Aug 17, 2022 at 08:13:15PM +0200, Borislav Petkov wrote: > > Do we have a more scalable way to support it today? > > You're not reading my mails. Lemme repeat: microcode loading is a I do read them, but probably I'm not seeing your perspective. It's unintentional. > dangerous business, especially the late thing. I'm certainly not going > to expose that to people if there's no merit. The only merit for loading > the same revision is for testing purposes. For this specific patch in question, its not for testing though.. Its required for functional purposes? > > If you're about to test stuff, you can just as well patch the microcode > loader to do what you want it to, like I just did. I guess after this patch is merged, you would need no special patches out of tree. True? I'm sorry if I missed something that is obvious. apply_mirocode_amd() has no revid checks, and __apply_microcode_amd() has no revid checks.. In effect you can test applying the same microcode over and over again without having any special patches. I thought you could enforce revid only on the primary, and siblings you can re-apply. Will that will satisfy the real need? Cheers, Ashok