Received: by 2002:a05:6358:111d:b0:dc:6189:e246 with SMTP id f29csp516013rwi; Wed, 2 Nov 2022 14:50:29 -0700 (PDT) X-Google-Smtp-Source: AMsMyM6ZMy8ZzItOqLRjT18pwxa1PDmVOR8tt5a1z+g1vypw6J0VV/U/T+BGvCPsRdjogmwWKgvG X-Received: by 2002:a17:907:8d07:b0:7ad:cdf2:7b66 with SMTP id tc7-20020a1709078d0700b007adcdf27b66mr17876324ejc.699.1667425828909; Wed, 02 Nov 2022 14:50:28 -0700 (PDT) Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id t4-20020a056402524400b0045dbfc32399si20353795edd.552.2022.11.02.14.50.05; Wed, 02 Nov 2022 14:50:28 -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=e9L2Go09; 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 S230396AbiKBVcW (ORCPT + 97 others); Wed, 2 Nov 2022 17:32:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229709AbiKBVcU (ORCPT ); Wed, 2 Nov 2022 17:32:20 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A39E1089; Wed, 2 Nov 2022 14:32:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667424739; x=1698960739; h=message-id:date:subject:to:cc:references:from: in-reply-to:content-transfer-encoding:mime-version; bh=g5IvRkEQoyuTxFhgJhNikF8K/x4jyzcAv/6cAUODrvo=; b=e9L2Go09laW3jyR9KDkvFKQGNTv7Fxm4SB55+lnC8wGuFqBwnk51y+2c HFEZI3MigV2P6ZMA5do0NjSj4kmMAHBkm2P4uQnXcr+FGFMY2Zx0GZi2d jsWZ5gZFeFlpxHDJR7kgFHjKK/85kwQs+guGXR4KENCVKshNsJmA6LjCn PJHJGgfMFVTjCa41X0K+iodV6UvU5/8AlqTXypphZXeLAL2A+bmF0+D9q k3EUXzAQY2GMOVSet6L1ppTVZDszRrHcsHq3xsJ7bVZQbRB0SNIy4C/Vj Hiw2ryNJ/rj/4SIfktjxaPuFu3gTmwHtF+5W7JoMMVppSJZ/krW7iyad9 g==; X-IronPort-AV: E=McAfee;i="6500,9779,10519"; a="289235811" X-IronPort-AV: E=Sophos;i="5.95,235,1661842800"; d="scan'208";a="289235811" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Nov 2022 14:32:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10519"; a="963690822" X-IronPort-AV: E=Sophos;i="5.95,235,1661842800"; d="scan'208";a="963690822" Received: from fmsmsx601.amr.corp.intel.com ([10.18.126.81]) by fmsmga005.fm.intel.com with ESMTP; 02 Nov 2022 14:32:18 -0700 Received: from fmsmsx603.amr.corp.intel.com (10.18.126.83) by fmsmsx601.amr.corp.intel.com (10.18.126.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 2 Nov 2022 14:32:18 -0700 Received: from FMSEDG603.ED.cps.intel.com (10.1.192.133) 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 15.1.2375.31 via Frontend Transport; Wed, 2 Nov 2022 14:32:18 -0700 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (104.47.57.176) by edgegateway.intel.com (192.55.55.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2375.31; Wed, 2 Nov 2022 14:32:18 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=kTv1RclhmrZ7C/laz9P2kmfVincAbR2UFCjHbZMSEUSkpCZ1RJNOpBsBKfcin4QBmQuuqIkPHwxIC6/c3fn2GKbM4gd9HySjpJ2O4TUWswCHQYqtIU7brqJya+OC8HDSjS8J4VQyQ97ouZLyBxsubx/JzqgDtB2qn3kIg7fhiP8csy40xC7gXc1XbvimG1RPYixb7InlfeyqC1ohA7oC+440NmsIf8yEqfWr0VufYLXyGggMGtMBD6Qs+0SLPHUgP2z5XKMOM7EFkBvhxxyfTC7B1Wnrbi0IQxj7/LdddhuHgjaYMHAtIteD/WbO8nk43PpUafVFaotbF8hBs5ZhZw== 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=uypGApwBapD4iPJ4mE6fEzdcjvq89Q2JMlpfqtZSOlU=; b=l/MJcqKaUGfJv8C9t0BHDDe7DEWKzgk/K9ARAZ6ba7r/9dOmoDKmUZI3ULHJqIWDedNZKy3BH2qJCm+zirEX8I5qwWlw5j020V0n54RRQvAyYKo4snWqyKyc8BfsrLTSnQ/3JOyRSGqn88LZRTOfD0XvEalUFjbK80+oA9jOMYHASXNtN3GY8cbMqmmJ//hg5edysl5zDS0EY+fQ0fH4uMcv5ANz4nv44Pa3eofNu6RokfuLBJNs5UdTfScNj3KgzdBtLeDkhCDYOSeEfXWN0lcqLSKab6ghhs/QrB/kFbUuVTbFlgwCYwAEwpDV9j3LUkI+yrVgovuRv/O4Sr4tug== 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 BYAPR11MB3768.namprd11.prod.outlook.com (2603:10b6:a03:fa::20) by CO1PR11MB5074.namprd11.prod.outlook.com (2603:10b6:303:97::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5791.22; Wed, 2 Nov 2022 21:32:15 +0000 Received: from BYAPR11MB3768.namprd11.prod.outlook.com ([fe80::f980:8dbd:ddf0:11c0]) by BYAPR11MB3768.namprd11.prod.outlook.com ([fe80::f980:8dbd:ddf0:11c0%4]) with mapi id 15.20.5769.021; Wed, 2 Nov 2022 21:32:15 +0000 Message-ID: <667a6ae1-7c2a-5be6-afad-d8f3e2f059fe@intel.com> Date: Wed, 2 Nov 2022 14:32:10 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: [PATCH 05/14] x86/microcode/intel: Expose find_matching_signature() for IFS Content-Language: en-US To: Borislav Petkov CC: , , , , , , , , , , , , , , , References: <20221021203413.1220137-1-jithu.joseph@intel.com> <20221021203413.1220137-6-jithu.joseph@intel.com> From: "Joseph, Jithu" In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0267.namprd04.prod.outlook.com (2603:10b6:303:88::32) To BYAPR11MB3768.namprd11.prod.outlook.com (2603:10b6:a03:fa::20) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BYAPR11MB3768:EE_|CO1PR11MB5074:EE_ X-MS-Office365-Filtering-Correlation-Id: e5309931-45fe-4573-eb34-08dabd19b644 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr 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:BYAPR11MB3768.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(376002)(346002)(396003)(39860400002)(366004)(136003)(451199015)(31686004)(2906002)(86362001)(31696002)(66946007)(6512007)(6506007)(26005)(41300700001)(8936002)(316002)(6916009)(7416002)(8676002)(4326008)(66476007)(66556008)(5660300002)(36756003)(82960400001)(478600001)(6486002)(38100700002)(6666004)(83380400001)(2616005)(53546011)(186003)(45980500001)(43740500002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?U041aEtJUW9vV0k3SXlMQUN0TCtiM0lPNVo4ZkVSUnNFTFZ6WmdXNGdTRmJo?= =?utf-8?B?OG5ZUFArSjhkeFd0RUZpeXg3ZUtaUUNHRkMvMFV6TWV5R251NUk3V3BqZ09r?= =?utf-8?B?OFR0d3J3NW5aeXFlRmltNGQ4ZG1FUWYzRzNGZ3RKWnpkZTlzUzJneXEwOVBK?= =?utf-8?B?OUxBZ21Ib1JGRTJLaEQ4bzRreFkvckwwbk9HaGo4eUtPZnByejdlU0poSFB2?= =?utf-8?B?SlI4aTUzTEs3UFpVVVFJMktoMVN2M0w5dnJDUW1QeGw3QjRnSUM3ZDNrVm4v?= =?utf-8?B?cVd2a0NMSktLamkyZUxsbUJxY3NhRTIzNlpUWDhSY2I0QnVQYWpQdTY0QzVU?= =?utf-8?B?b2pqVTVzUFZ5d2oxZVQvdjZ3K2dJa2xkeHdTUU5BbTd1d2lSaHV2aURYa3dt?= =?utf-8?B?VE02MXhSTklYVVdmVEVyWHRsS255T1NZdWxSQ0ZFWkt4TUFzWjZsZnBzOXFH?= =?utf-8?B?RzZUa1hLT3QwdFlEWE1DdDF4TWdTdlpCeXdvTFNINDNqczVWN3psR3lwMExy?= =?utf-8?B?bXZ3M1c2MWppeUg3SVNSVi9ZclRISVFHUGlaR2dFNGEydGR6RE9uNStLSVpO?= =?utf-8?B?cUtiYW1MYnFrS2NBM3dQU1F0T0xNWEdEV1V3NWNleFhkOEc2cjV5eXRIK1hj?= =?utf-8?B?aENpeWtoZ3JVTUViZFRFcXBCb2cyZXd6ZS92b0FjSWtoNU1iU1A2SGZPYmJh?= =?utf-8?B?cyt1cWtpUEFYaWxCWmxlUElSNUNzODRSZWo4Rmx5L2xOVVM0SWFsOW5BeWQ0?= =?utf-8?B?SVhISXB2YUJwd0JINEQ4K3hhcEIvWlYzR3ZKS0NVNksya2tqY09ucUhHMGpZ?= =?utf-8?B?K2dvYlEydFVSS1oyb2FNSkE2WUpzcytUZ1MvVlh2MU5GbnFqRG9qRVhTVy9l?= =?utf-8?B?SkpmaVVINnpDUnRtaEV0bTMrK3BHeDQzNlIyMXNCZDN1VWpDeGN6ZTh3dk5P?= =?utf-8?B?dUpIb2dNRnlNS0Urek5RTGpwVFlrRld3K2cxQmREbEhjVTVYUkFJT1VOZkxH?= =?utf-8?B?dXFrTFRZRGhVWm5GREc4cXpOU0IrcWU4S0JZNlBUckd4dWR4VmdEY1RCL0Jn?= =?utf-8?B?SmsxNWdseWlKbkdiOUNFMWcvMm1FTzJheFlhWVZZSlhoelpvY2dzWmdNSEs0?= =?utf-8?B?US9hMFlGS0t6bU9yTWR6NUdUZURxNG9UQ0V0Wi91QXpsYldiQk4wWnhKUEcz?= =?utf-8?B?TUY4ZXhHWFJKcjlqdzRVWlBmLzVDZjVNa2ZFNUJVTjl3NmJIN0h4WW1kdGhX?= =?utf-8?B?RDV6cUN3ZVhrcG5DcE9nR1VnMGFaQVNxNkhoVGVGL0V0VHFlbmEwakdqdWpF?= =?utf-8?B?d054WXZESFN3cTJsbUo0aTVubGdFdHdJMzd4eHp2SDlYTjh0N1AwSnNrUEVu?= =?utf-8?B?eUdGY3crMTRIazNGZlRNREZTeHpGbHFBSGhUVXdjSHZEOERFNVlETGNackFi?= =?utf-8?B?VE1hOW40WkdMVE5wT2h6TkVKQ25kSUEwZGExUHZmNlErbko2dS8wUGFINlY0?= =?utf-8?B?ZjU5dWpFeUNibloxK2ErK2VpU2ZHVDNyM1RCV0VSbVM4dzFNSHFUcm1OTjVk?= =?utf-8?B?V296dXFoN1RPc2g4ZzhVRXpXRDRjYUZXdjg4Mk5XR25heWtmby9uaURaUTg1?= =?utf-8?B?T1o2TUUrakhpdkZ4Y25LOXcxUmNvNExLVXVtWDh6SVpITjdUZkcwTjBMQ0J5?= =?utf-8?B?SFVFUXh3ekV1OURrdGdhWDR2QUZMZmVLcXZFZFBkVEJjTWExRXJFdkdBT0dM?= =?utf-8?B?QThmWTIzQnduRGpxc3hnNE5MK09wWVE4MkFLZVFKcksvRzVMS1dtdzVrOWJv?= =?utf-8?B?M1BKejdSZmRrN2NLNVA2RXg0TmlVdEhPRUVvVVREYWRleUNrZnFIODZRdmZB?= =?utf-8?B?ZjNyVDhQci9hTDJuNGV4ditORklEY2hLSHVBdTM0RUVsTkFEY1pqNkxXdmdU?= =?utf-8?B?cVlleHROV2RyeWx1dHVhMHZqTXJ6NUZ6SXcrMTJMdnpjQXM3bnVpTkpmZzd2?= =?utf-8?B?NFdpeEVmNkJ2aFBicjBVYXhZL29OdzR0eVk2QnFBV0swV3hoWkpIOG5Td0hN?= =?utf-8?B?ajZ6YzcrcHBMcExGVDJxRFF3TlhGNUlXMWRXVG9mUlgzRUF6UkpUVGRqR1Zs?= =?utf-8?B?aFplMHV3bVpFc1VscEFNRit1VFF6THJmQW94UkxmWXU3K0ZMNktROS8vUXkr?= =?utf-8?B?c1E9PQ==?= X-MS-Exchange-CrossTenant-Network-Message-Id: e5309931-45fe-4573-eb34-08dabd19b644 X-MS-Exchange-CrossTenant-AuthSource: BYAPR11MB3768.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Nov 2022 21:32:15.7554 (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: gbOVrkmjyluCMsbDmJ2ZrTtjgplD/hgNCnLV+6SlPicYswVAqppKkQ26YxDedqSj7eUM4SJ9iU0ta+PYsNYo9Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR11MB5074 X-OriginatorOrg: intel.com X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A, RCVD_IN_DNSWL_MED,SPF_HELO_PASS,SPF_NONE 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 On 11/2/2022 12:03 PM, Borislav Petkov wrote: > On Fri, Oct 21, 2022 at 01:34:04PM -0700, Jithu Joseph wrote: >> IFS uses 'scan test images' provided by Intel that can be regarded as >> firmware. IFS test image carries microcode header with extended signature >> table. >> >> Expose find_matching_signature() for verifying if the test image >> header or the extended signature table indicate whether an IFS test image >> is fit to run on a system. Add microcode_intel_ prefix to the >> function name. > > This doesn't look like the right design to me: > > If this is going to be generic CPU-vendor related code which other > facilities like the microcode loader can use, then the prefix should be > intel_. Just like intel_cpu_signatures_match(). > > Then that code should either be in a lib-like compilation unit or simply > in arch/x86/kernel/cpu/intel.c. Just like intel_cpu_signatures_match(). Will rename the function to intel_find_matching_signature() and move it to to arch/x86/kernel/cpu/intel.c as you suggest above and add its declaration to arch/x86/include/asm/cpu.h (where intel_cpu_signatures_match() is defined) Jithu