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 CF243C001DC for ; Mon, 24 Jul 2023 02:17:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229655AbjGXCRl (ORCPT ); Sun, 23 Jul 2023 22:17:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229960AbjGXCRZ (ORCPT ); Sun, 23 Jul 2023 22:17:25 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A4B4E45; Sun, 23 Jul 2023 19:16:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690165013; x=1721701013; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=V8UsvwDiirBYIe4lO94WK8mx7dbFtsaZ5VdkFZRe+Vc=; b=LZO5k43+HXEMe14/KKJ3quEmwHW83l3lu3CA3k7SbyYy/6ZDkjRkNl8G pzWsKhXL4rY2ekb804ArXyUVS6Apa3Fbans6lO3PqYUpXVpqzlz7TbX0U SlYQZY6dEDM0tQidCY8r16/91XwxhQ5YIRvj9B4vgqlCu9G7pKtprCN/x JPvHvzvF9Ok0zMg+imQQzEfBGXqHTvLwWzERobdUW2x321W+Mx5D3CQGU FvFQtmxD8AcdKaShjRBdkzUkQRwd/kpm29OzhNGcCizSnxwb/3virQGLj ljf+9iuU63tjINKFWqBqpwBfymxXsu2fP7nTWA4wZxuY8qM0rPb1UfHGq g==; X-IronPort-AV: E=McAfee;i="6600,9927,10780"; a="347614975" X-IronPort-AV: E=Sophos;i="6.01,228,1684825200"; d="scan'208";a="347614975" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jul 2023 19:15:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10780"; a="972093685" X-IronPort-AV: E=Sophos;i="6.01,228,1684825200"; d="scan'208";a="972093685" Received: from fmsmsx602.amr.corp.intel.com ([10.18.126.82]) by fmsmga006.fm.intel.com with ESMTP; 23 Jul 2023 19:15:43 -0700 Received: from fmsmsx612.amr.corp.intel.com (10.18.126.92) by fmsmsx602.amr.corp.intel.com (10.18.126.82) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Sun, 23 Jul 2023 19:15:43 -0700 Received: from fmsmsx612.amr.corp.intel.com (10.18.126.92) 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 15.1.2507.27; Sun, 23 Jul 2023 19:15:43 -0700 Received: from fmsedg602.ED.cps.intel.com (10.1.192.136) 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 15.1.2507.27 via Frontend Transport; Sun, 23 Jul 2023 19:15:43 -0700 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (104.47.70.101) by edgegateway.intel.com (192.55.55.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.27; Sun, 23 Jul 2023 19:15:42 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FcuwrrnbAjbeCBIuLkFI1sKchWsvHVRFmjMJV4rgzei9MYL6pzZCU2N/eF4/5NZR2KTdtVBjF/Aeg+OnVXOUO9dOIJZBt3hUCXI5k3VGfWcb8mz8470SeSKYMuYWo3wDo3pJRqpcL8EQoNChdpZ5bjMbXDHBBJM5BayoShQBAEdkE8EZ5+MnrSwFWQgfW1XjHSXaFloSBRMQa1gnHNPryiPh4v13iICfQMz0QcIsJsAR6I4WTmaWOFms6vm7Ho1DDcwhDuPU2exoUp+aFupLMayb0ITZFTLdkxOio8Z4nApJHwV9kvVB8C/rrLDM6wGR3AOmpXOiy+WqsM5893JOiQ== 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=V8UsvwDiirBYIe4lO94WK8mx7dbFtsaZ5VdkFZRe+Vc=; b=iofTt9EjIyEF7CJON3H9qCNDP6tnZwlanpmTawBAdEyZeg7iZ/X0Yg3eTgqNB5aWYmdyQ3V4Evpz36OFULwBgCpekHTmYD7NJTkAl2z0HlvIE9zqdwCjxGoZWJb2hds5tfnWVlz6sOFJCW+36mSeiudZrTGMRvjcD4BOAUF8clAJ+dwGRW11olKUakhGKK0coaR29o7MLJ+X3uissAzyvrpttCdS2aR/ZIo3jQPuPNQUqw5qgEgd3jAuUgg941dwtGJswZ6hlGn9IKCSgc9yVIaFmwGpI7WOutF504o6O2OTGZ57c8oLjpcwv/soFi9ed7qTDuNIrRFZpD8hCfhNMQ== 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 Received: from BN9PR11MB5276.namprd11.prod.outlook.com (2603:10b6:408:135::18) by MW4PR11MB8267.namprd11.prod.outlook.com (2603:10b6:303:1e2::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.23; Mon, 24 Jul 2023 02:15:41 +0000 Received: from BN9PR11MB5276.namprd11.prod.outlook.com ([fe80::137b:ec82:a88c:8159]) by BN9PR11MB5276.namprd11.prod.outlook.com ([fe80::137b:ec82:a88c:8159%4]) with mapi id 15.20.6609.026; Mon, 24 Jul 2023 02:15:40 +0000 From: "Tian, Kevin" To: Jason Gunthorpe CC: Lu Baolu , Joerg Roedel , "Will Deacon" , Robin Murphy , "Alex Williamson" , Nicolin Chen , "iommu@lists.linux.dev" , "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v2 1/2] iommu: Prevent RESV_DIRECT devices from blocking domains Thread-Topic: [PATCH v2 1/2] iommu: Prevent RESV_DIRECT devices from blocking domains Thread-Index: AQHZtUNfAivNXia3ZE+yVYj94mwJ4K/DlO/ggADLeYCAA93D4A== Date: Mon, 24 Jul 2023 02:15:40 +0000 Message-ID: References: <20230713043248.41315-1-baolu.lu@linux.intel.com> <20230713043248.41315-2-baolu.lu@linux.intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: BN9PR11MB5276:EE_|MW4PR11MB8267:EE_ x-ms-office365-filtering-correlation-id: 4d019014-1249-458f-1c5d-08db8bebe0e0 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:BN9PR11MB5276.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(376002)(39860400002)(396003)(136003)(366004)(346002)(451199021)(4744005)(2906002)(7416002)(52536014)(66946007)(8936002)(8676002)(66556008)(6916009)(4326008)(122000001)(41300700001)(316002)(66446008)(478600001)(5660300002)(64756008)(66476007)(26005)(6506007)(7696005)(186003)(76116006)(54906003)(71200400001)(83380400001)(33656002)(9686003)(82960400001)(38070700005)(86362001)(38100700002)(55016003);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?utf-8?B?VWVKWnZMaXJNRC9MM0R0WXB3ZWg2NEh2Z0h1Zm5MeHJhODdIMW1CeEprR0Rj?= =?utf-8?B?UXBGNGg3NnhHY2dVek1UTy93ZWpsL0I0bVc2SG9vVmVmVVZYd0w0ZzVhbEJL?= =?utf-8?B?NitaMDlKTTRieU1kT0N4UTVTMlk3K2U2WFhXMUFkV0gyYmVMS1BpL3RQcUIv?= =?utf-8?B?OGJINGFCWVJkRU56STlma00zR0wxLzZNWTBKZWRvQjcxVXN3NmxMa3RVSHQ3?= =?utf-8?B?eWxYdVRFVmVvQXNyWHRWOTBLUmthaGxFK0x6MnlDSVJJeGRXanl3b25nbG9p?= =?utf-8?B?TytyODBEVlRPUWdpUmxKRVFtbjhlU3I2UXBTanhZVkpKOTJRbXI0VTl0cWpn?= =?utf-8?B?dFJQSjlLcFZhWjhJcDR6bTM3RUlwUm1pQnBtdnpNd3JrcUg0WFkzUWE0M3VS?= =?utf-8?B?bGY4T2VveFJNcmdESGxJNkQvYU1JVVhpWmMrVjFNQktpK05OYnZxaDJVUUsw?= =?utf-8?B?WnZYQk43YW9aUTZQVXptbmJ5bU93RHpYWERFbmVzblkyWmIyTE15ZFFzODN4?= =?utf-8?B?WldkNE43VmdzU3NXaTVMcVpZQlJGUHhTU1daNmY5QmI5TVhPaWZLWDIyTDUv?= =?utf-8?B?NVdOTml2TVdxK3pTQzNsR0ZjV1RESmNkdFZzVHhZMXZDMTA2bmNZcTZMbm0r?= =?utf-8?B?Nm5rOHVUY2JWRWNkQjNSZm1uSGlTa0IweGM5MUd3UWpHMHU1UGxuY2Q4bkhI?= =?utf-8?B?K0xLYjV4Q1cyV3BMdnJWLzZic1pEbG42UHBUbVkxaktZdWd0bFVuQjhFTE11?= =?utf-8?B?SjhpdHExYlRhblZ3T1cyNWRSZUQvT3M0NlVrcWx2YTZDL0w4eU91cW9zUmcy?= =?utf-8?B?b1l6bnBFeWpoTnlneHU1ZEFqRStSblNjZlRFMWRoOE9iVWkxRGkvZzZtNFc0?= =?utf-8?B?akVNUldjR0puLzZodVFJK01WNnpGck54d0FEOW1EcXJNeXV5dEY5S1lNYnFt?= =?utf-8?B?d0FqZTA2VlEra1hCRmtRcjB1K25RTWNyY2xYNU1rN1FLOHlLSUVxT01ic1k1?= =?utf-8?B?M29LdmJMN2k5SlRwWXRWQXc1cm5pZEpwTitTVjg1c21NWUgzTjlob05Wd2ZN?= =?utf-8?B?MnZKTzFHN2dDMVFPZ0dyL0lUeXVPYmljcE1JN0dqRHRHWVZtaFpwRWthRDhq?= =?utf-8?B?ZHFFdUtTMHFQWld3V09sWXp2amNNSGxNWlQreEMxYkY4WFhjUTFOZGFveW1n?= =?utf-8?B?TTJ1R0IwUUdvTFJYVjg1SEhrZnNxWW92UFU5YUdQRFdjZ1JnUWZSVUJLRVZ0?= =?utf-8?B?NWZ3MG5TeFFlcnJUdm1zbWdqN1VpTXVHQmEwM3EzZ216THplM0N5YitOa0E5?= =?utf-8?B?M1RJRHpyL1ZGbUt1WGJib0gzTHRvSzJIVCtmcVdKZUdXTG9wYXhWbW5BNlFa?= =?utf-8?B?Um1CYkJGN1NJYk5BTUFNalZHRXZxdkhqa2tBUnBGNVJBRGw1WGo2NitVRCt3?= =?utf-8?B?b0k2VzkwcG9MeUdXUGlPNlpDaFRVK1gvZWxjOVZyS0JGRW9ha0lDdU5SZHZ1?= =?utf-8?B?TnFLZzBBV1ZPRzF3MXZpSURPUlZQMXY0OEplYmdIZEtoN0Qyc043cktQYWNE?= =?utf-8?B?bWNzY3dSZ1hUUUFOenkyai9CbVhFWlRhMmdjQVRIcGc2a1NjRzdmVVVBU2Uz?= =?utf-8?B?OUdpV0UzTFd2enZtaU1ib1h6V0hMMTFib0pVM2MzQnJyU3M0b2o1RlNYclov?= =?utf-8?B?WnpicnYrS3hPTUlqRW9zSWExLytuNEtNTFRlOHMzTmNjSU9uN2NKZ1BoSEhR?= =?utf-8?B?VjAwTzZVMm1zUzk0NWxCWWlqdmFqcjdMQndwYUJPSUtjdENsRUhNUHg3MWQy?= =?utf-8?B?OFUveUY2RnFhTTFmTVZnSDRPcWtFUDhHQ1IrOGEwQW1pTVA2WmgzQndGTTc1?= =?utf-8?B?NEtCcVhPbGRUQ0JJcmRHUU1HeE1ELzJCcDBCY2NUb2w4cFF3Q0lRdEFUMzRw?= =?utf-8?B?RDYvbDIwaTg1S1c2Y0tMZVV3cGtCMGdBT1NYWjRwcTNtejg0N0dMTGNJMDdm?= =?utf-8?B?VW84OC9meDVGbDRuWnFXWmh3ZFJjcG5GaHgxRWtEUnIvTWQwK0llcHNuZDdh?= =?utf-8?B?YmFQK0Y5Vm1iNHFUT1JWODFGZUFQSk9VNStWbGR6bEZSSWlWRFNmNkw1N1VG?= =?utf-8?Q?PHZcERlxR5KWEl91ZkgBpxU1c?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BN9PR11MB5276.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4d019014-1249-458f-1c5d-08db8bebe0e0 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Jul 2023 02:15:40.9012 (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: XrET3BupsglFTDNW5Ba4dSe9jveevyzeIQprnqIJeZ8yAOzS6joNv50ZxP4LsOnVv4nHjldGM4j7aPLu7qBxeQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR11MB8267 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiBGcm9tOiBKYXNvbiBHdW50aG9ycGUgPGpnZ0BudmlkaWEuY29tPg0KPiBTZW50OiBGcmlkYXks IEp1bHkgMjEsIDIwMjMgMTE6MTAgUE0NCj4gDQo+IE9uIEZyaSwgSnVsIDIxLCAyMDIzIGF0IDAz OjA3OjQ3QU0gKzAwMDAsIFRpYW4sIEtldmluIHdyb3RlOg0KPiA+ID4gQEAgLTk3NCwxMyArOTcy LDE3IEBAIHN0YXRpYyBpbnQNCj4gPiA+IGlvbW11X2NyZWF0ZV9kZXZpY2VfZGlyZWN0X21hcHBp bmdzKHN0cnVjdCBpb21tdV9kb21haW4gKmRvbWFpbiwNCj4gPiA+ICAJCWRtYV9hZGRyX3Qgc3Rh cnQsIGVuZCwgYWRkcjsNCj4gPiA+ICAJCXNpemVfdCBtYXBfc2l6ZSA9IDA7DQo+ID4gPg0KPiA+ ID4gKwkJaWYgKGVudHJ5LT50eXBlID09IElPTU1VX1JFU1ZfRElSRUNUKQ0KPiA+ID4gKwkJCWRl di0+aW9tbXUtPnJlcXVpcmVzX2RpcmVjdCA9IDE7DQo+ID4gPiArDQo+ID4gPiArCQlpZiAoKGVu dHJ5LT50eXBlICE9IElPTU1VX1JFU1ZfRElSRUNUICYmDQo+ID4gPiArCQkgICAgIGVudHJ5LT50 eXBlICE9IElPTU1VX1JFU1ZfRElSRUNUX1JFTEFYQUJMRSkgfHwNCj4gPiA+ICsJCSAgICAhaW9t bXVfaXNfZG1hX2RvbWFpbihkb21haW4pKQ0KPiA+ID4gKwkJCWNvbnRpbnVlOw0KPiA+DQo+ID4g cGlnZ3liYWNraW5nIGEgZGV2aWNlIGF0dHJpYnV0ZSBkZXRlY3Rpb24gaW4gYSBmdW5jdGlvbiB3 aGljaCB0cmllcyB0bw0KPiA+IHBvcHVsYXRlIGRvbWFpbiBtYXBwaW5ncyBpcyBhIGJpdCBjb25m dXNpbmcuDQo+IA0KPiBJdCBpcywgYnV0IHRvIGRvIG90aGVyd2lzZSB3ZSdkIHdhbnQgdG8gaGF2 ZSB0aGUgY2FsbGVyIG9idGFpbiB0aGUNCj4gcmVzZXJ2ZWQgcmVnaW9ucyBsaXN0IGFuZCBpdGVy YXRlIGl0IHR3aWNlLiBOb3Qgc3VyZSBpdCBpcyB3b3J0aCB0aGUNCj4gdHJvdWJsZSByaWdodCBu b3cuDQo+IA0KDQpOb3QgYSBzdHJvbmcgb3BpbmlvbiBidXQgSXQncyBhIHNsb3cgcGF0aCBhbmQg cmVhZGFiaWxpdHkgaXMgbW9yZQ0KcHJlZmVyYWJsZSB0byBtZS4g8J+Yig0K