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 DA05FC61DA4 for ; Thu, 16 Feb 2023 07:57:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229740AbjBPH5H (ORCPT ); Thu, 16 Feb 2023 02:57:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229584AbjBPH5D (ORCPT ); Thu, 16 Feb 2023 02:57:03 -0500 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3558947435 for ; Wed, 15 Feb 2023 23:56:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1676534188; x=1708070188; h=from:to:subject:date:message-id:references:in-reply-to: content-id:content-transfer-encoding:mime-version; bh=PkaoYOCYL4rqehTLUG/JXqRPVhXOK62asrIoRhOmEkc=; b=IyzMD3xQ1AqApV5/Wz8N7HNWoG82WL7NoQUJUia6UCk783zZymy+yH4d ea1NzsindqOxxxx6nUzSDlAMNaOajfqOdabtib5pedcqDcBqP1d5prK+E f9/US+tJ4VX3QKa2NC248KEfFy/yPiOgx+rc4Os5D4xamcRxy3BNFw11c WG+z28jNgn2HUkSz1ixqTg5xuGYDGAdpuO4upaaku3rlCIXqRPN8vn6OD I0LxJXztY4Ty8GSTeAJhQ6sTaA+uhAqyWHviPdglvKb+U/MoLk3LFlAUq neZuJ4tItC/pfHHyEcSvRbehkcORvqqmhJ5mt6v8f83kGiIgLexKEi0Jp Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10622"; a="315327667" X-IronPort-AV: E=Sophos;i="5.97,301,1669104000"; d="scan'208";a="315327667" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Feb 2023 23:53:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10622"; a="647578647" X-IronPort-AV: E=Sophos;i="5.97,301,1669104000"; d="scan'208";a="647578647" Received: from orsmsx603.amr.corp.intel.com ([10.22.229.16]) by orsmga006.jf.intel.com with ESMTP; 15 Feb 2023 23:53:49 -0800 Received: from orsmsx611.amr.corp.intel.com (10.22.229.24) by ORSMSX603.amr.corp.intel.com (10.22.229.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Wed, 15 Feb 2023 23:53:49 -0800 Received: from orsmsx612.amr.corp.intel.com (10.22.229.25) by ORSMSX611.amr.corp.intel.com (10.22.229.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Wed, 15 Feb 2023 23:53:49 -0800 Received: from ORSEDG601.ED.cps.intel.com (10.7.248.6) by orsmsx612.amr.corp.intel.com (10.22.229.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16 via Frontend Transport; Wed, 15 Feb 2023 23:53:49 -0800 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (104.47.58.102) by edgegateway.intel.com (134.134.137.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.16; Wed, 15 Feb 2023 23:53:49 -0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=dhWHJRjcM/iYO2htwqvraRIDalk87GsnWwc+LUmyvq/UI2kjM4E57R4A9Iy0Xkzb598E4pkGOYc5xCAyYb8q2VYxtBNNJPVBrQwsJw2xG+8pnhk/hq5Ibzx4zqmrqMflXePyE8HTRdGGG0e15kECSN/44fZb4iNWNONUfwSZCF6BVkOEI3Wy0SWNJIoSeqPjBo+FivFjci+4CyR1fgdny82ERj86ChC1zNjZeHtrO4zAQ9u3VcNrzc+uct14GpH+MjfEcPz4gY2FY+Ot1AebAV071uoIdc6lQhnAboj+OjHynjvfBCssMMKPSflNPqhzbSOwY/2RPqJBK0+LqqJm3w== 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=PkaoYOCYL4rqehTLUG/JXqRPVhXOK62asrIoRhOmEkc=; b=cJC6p8aAdnPftADT0DalFyvrG775OwNbZuWXDbSyc9FUJdUIMS0+GbsmZVzYVQePD0IqfK3fvEOXCulcv4l45R862TbvlR3Oye51ZYf0e+6SPJTKY5mgRulrVJgfDuh5xZ+qqgkoxCYcDCDsV2Gnm4V5hzw8pwxZMrJKa7S+M8vH+7sO53AiycyhHW7KJDouOYWt47kzR8ONZCEeOaRZKgDp7wLBOcS3iYMAs4hWyGQkSR1kRuJM/6jIuUilC03MRYX+hw0DY4+8wJeUoURVqLll7UOkLHpblgOxQPpEtw3QT1c14RC0vt+pYB0DZBYrZ5HrUJfHNcZ5u08h7y6grA== 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 BL1PR11MB5978.namprd11.prod.outlook.com (2603:10b6:208:385::18) by PH7PR11MB6794.namprd11.prod.outlook.com (2603:10b6:510:1b8::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6086.24; Thu, 16 Feb 2023 07:53:47 +0000 Received: from BL1PR11MB5978.namprd11.prod.outlook.com ([fe80::3f19:b226:ebf1:b04a]) by BL1PR11MB5978.namprd11.prod.outlook.com ([fe80::3f19:b226:ebf1:b04a%7]) with mapi id 15.20.6086.026; Thu, 16 Feb 2023 07:53:47 +0000 From: "Huang, Kai" To: "linux-sgx@vger.kernel.org" , "Chatre, Reinette" , "jarkko@kernel.org" , "Dhanraj, Vijay" , "haitao.huang@linux.intel.com" , "dave.hansen@linux.intel.com" Subject: Re: [RFC PATCH v4 2/4] x86/sgx: Implement support for MADV_WILLNEED Thread-Topic: [RFC PATCH v4 2/4] x86/sgx: Implement support for MADV_WILLNEED Thread-Index: AQHZMtTIU78a0A3o9UaUPrwPUmNX5q7OTQIAgACfroCAABrOAIAADTuAgAAPNoCAAFobgIAAUaaAgABy3wCAAQ9aAA== Date: Thu, 16 Feb 2023 07:53:47 +0000 Message-ID: <68d19c7bb8e28e85d503da53124fc57b916dcaf9.camel@intel.com> References: <20230128045529.15749-1-haitao.huang@linux.intel.com> <20230128045529.15749-2-haitao.huang@linux.intel.com> <20230128045529.15749-3-haitao.huang@linux.intel.com> <3c7b4f7bf3e7c2a213662b1c9fdaa979050a9327.camel@intel.com> <39903b057751d963e4e9b2a8cd5271fe3c102509.camel@intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Evolution 3.46.3 (3.46.3-1.fc37) 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: BL1PR11MB5978:EE_|PH7PR11MB6794:EE_ x-ms-office365-filtering-correlation-id: ae4ba71b-223b-4c6d-1712-08db0ff2ef1f 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:BL1PR11MB5978.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230025)(376002)(366004)(396003)(39860400002)(136003)(346002)(451199018)(316002)(8676002)(91956017)(186003)(26005)(38070700005)(478600001)(6486002)(66446008)(66476007)(110136005)(76116006)(66556008)(64756008)(66946007)(82960400001)(71200400001)(86362001)(2906002)(41300700001)(2616005)(36756003)(6506007)(38100700002)(6512007)(5660300002)(8936002)(122000001);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?utf-8?B?Vk9ZM0djbFF1dHhNVzRycUYvbXFIMzBmYkx1RGR3RHQwdXRIanlHSDFKcTg0?= =?utf-8?B?Ykx3c3R4YmtqWkk1Uk9EeDBxTk5GUEc2SmFSUkpQSEowaTVya2VPYzYrQVkz?= =?utf-8?B?UExiM2E2dkVLS0FxRXFRSUdEREVCZmlER3czdUZac3JxWWwveTVwM3JoQVZ1?= =?utf-8?B?Q29KY3oyNEFjak9iYS9PS2taenNYU1pNSTFzMjdvWUxZNDJQa25KZW93V0Yw?= =?utf-8?B?TlNwU1Fvbzc3NlYzNjBtSnVGTnBpN3M3M0RHUFRvcUZMNGdKUmNoc1RVWjE3?= =?utf-8?B?YXFXcHJLMk1GaFB6K3NRdDlTZFlLU0RJR2pmOW0wOWp6bWxYYUxDRlVKMUIv?= =?utf-8?B?QlVYTUhnTTlhZW42Vm9Db3lleEJwZWxaK0ZIcjNDQmxOdWZmNWVDK0Ftc1BJ?= =?utf-8?B?WGQ3L3dHUittZHZjZXlBMGFvaWRFNzh4d0F5c0g1Z002bmlMU3BZRnpnK3JM?= =?utf-8?B?YWkyQzB3SjZvQlN3V1NoRFhtOXp5YnNFRjVKV25pRGJaSVhaaDRNMDVnbUg3?= =?utf-8?B?NjNXM1dTN0M4K3YyUlRjZXArOTlRaGJIUTVSbCtVT0U2cTgxa1NRS0FGbW0v?= =?utf-8?B?bVFOeWhFVTlPd29WRHcyUnJ3d3BRakNPUmVsRzEvYkNqTVZmU2M0Vk9PbE1R?= =?utf-8?B?M05ZTlJzRkhUNWtFMzRMcDJJZHVteENZbjVNaVk2a3EwL1BrZjN6aWhZR2lw?= =?utf-8?B?allQRGkyS0loM2lMeUc4NmRGb1FEWHZyTzhsajBSY2RFSjR0L01OVHgyOEhE?= =?utf-8?B?aHJyd3Y3Vm1zT1YzVnUrRnlycVp2YnVsRmYrZE54Qlc1Tm16djZOejdYTHZT?= =?utf-8?B?YUh0Sk5oK21Ea2k3eVVSaEVxaHJSanFvRWx3Y09Ccngya25hRVlISEQyZkt6?= =?utf-8?B?OFpxQTEveGxWaGlKOHBqYzExWk5sNE85MTk2OXhuUFdRNTZaTjVpVXh1aFdP?= =?utf-8?B?UE1sdUVZMjNGejM1b3FTS0tvOXpzY1M4YmZqM28vQTlHbWNwemFkVU9BZG1O?= =?utf-8?B?MjJjQUt4SGljUUhYeFphOXBKOWNXR0cycWxVbkNUdllVOWZaeWFZMnpxZFla?= =?utf-8?B?N2podW5nQmc2dUJVTk9OaEQ5OWRYOE9JMVVJODVHN1AxaUw4MjFSR0R1aitj?= =?utf-8?B?YXcwS1hEOWRGaTR6Q1dWb3ZYVFF5Y2FPWU4xbFpYVVlZOEhRTVFvYWovNS84?= =?utf-8?B?cTF6ZnhoN0dJQ3NDUi9BODVjdytkV29NRUxnZGJIeVlQalJyQkI5c1ZmVkdB?= =?utf-8?B?ZHorNW1xcm5KYVNrVjFhYmxuYTE2U2piYlZieWp1T0V5QnFwWno2OXJMc2xR?= =?utf-8?B?aG1aWjlBaXlKbUxrQUQza0MrWVpRbzlYcHdpZ1NJeUFMM2dMRExqUllBdktq?= =?utf-8?B?TEdyQ2FUZzYrWDBLY2tLMDkwZE1zc2xVSlBnaGpoZkxsb0FyUGRidmhhcHRK?= =?utf-8?B?aTR0aXp2dkhETldmR3h2Z0JBOWVJclJDUW81NklSL3hZd291eXd4S1A1UjBh?= =?utf-8?B?cTFJaXlhWW84NkVwSUd1aEFxTktuVXBkTVFrMlZVUjlhWHRhS1BTbHVacldL?= =?utf-8?B?NENubUd5NTJWWjlyYXJ2KzVLZW1od0MvMlpFd2tmb1ZzOGlQZC9tNU5wODBv?= =?utf-8?B?M2xnc0NJQ0F1cTB0cHVZWUwrRExaOEsrZmJyUDcrb05vOEJhT2ZtV2tsZVh6?= =?utf-8?B?UUpuckdvUGdFbGgwM2JtR1piRzVRNmR4eFh2blZMUFNUakJ1bkdZd3BpMC8x?= =?utf-8?B?UFUzU0tyeWJxTXFObktVU0w4Y00xcEZsbFFVSWFqOW9vWXBKaVpxWmhUSmMv?= =?utf-8?B?cG5sS1FrTjdsVWRaVW1zdXVSM1Zpa0RVNU8zMFBrYTdSRUJ1ZVNkVWF4TGpX?= =?utf-8?B?eUxRR2xNVGJWdnQzcjMvaDAveFA4aktEZ1BTcE16ODhLUEJLR3JXYzhsVGxC?= =?utf-8?B?cjVCM1F0U3o4YUJZd3hNRFREWjcyUnUwVmVUYzhzSXNEZGo2UitmRXJWWUhS?= =?utf-8?B?RlhWUllCWmJva1hmRFAweSt0OGVtR3IyR0dLOWpmaFo2em81QXlzb1dUejM2?= =?utf-8?B?UWZNelkyUlVVOExRSFNFOEc2aTRhbHJtYWJBeFlvRWRDODFtMlpkWnVqV3ZM?= =?utf-8?B?Rnh6aStmSzNMVmtqaENMTlcranAwRmQwNlZxRXdHcm5BY0pQSDZzWkdlQ1dM?= =?utf-8?B?dmc9PQ==?= Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BL1PR11MB5978.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ae4ba71b-223b-4c6d-1712-08db0ff2ef1f X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Feb 2023 07:53:47.0882 (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: Ji7gmUEm/Wr5CQRnYctq4TB4PobycqKQ/g5vnUghVk/4bfxuPm1f9pZN4W51GztX6F6dGzbi1adpJO9qOAFu+A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB6794 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org T24gV2VkLCAyMDIzLTAyLTE1IGF0IDA5OjQyIC0wNjAwLCBIYWl0YW8gSHVhbmcgd3JvdGU6DQo+ IE9uIFdlZCwgMTUgRmViIDIwMjMgMDI6NTE6MjMgLTA2MDAsIEh1YW5nLCBLYWkgPGthaS5odWFu Z0BpbnRlbC5jb20+IHdyb3RlOg0KPiANCj4gPiA+ID4gPiA+IA0KPiA+ID4gPiANCj4gPiA+ID4g U2luY2Ugc2d4X21tYXAoKSBjYW4gaGFwcGVuIGJlZm9yZSBlbmNsYXZlIGlzIGNyZWF0ZWQsIGNh bGN1bGF0aW5nIHRoZQ0KPiA+ID4gPiB2bV9wZ29mZg0KPiA+ID4gPiBmcm9tIGVuY2xhdmVfYmFz ZSBpcyBjb25jZXB0dWFsbHkgd3JvbmcuICBFdmVuIGlmIHlvdSByZWFsbHkgd2FudCB0byAgDQo+ ID4gPiBkbw0KPiA+ID4gPiBpdCwgaXQNCj4gPiA+ID4gc2hvdWxkIGJlOg0KPiA+ID4gPiANCj4g PiA+ID4gCWlmIChlbmNsYXZlX2hhc19pbml0aWFsaXplZCgpKQ0KPiA+ID4gPiAJCXZtYS0+dm1f cGdvZmYgPSAuLi47DQo+ID4gPiANCj4gPiA+IEkgZ290IHlvdXIgcG9pbnQgbm93LiBJIGNhbiBh ZGQgYSBjb25kaXRpb24gdG8gdGVzdCB0aGUgU0dYX0VOQ0xfQ1JFQVRFRA0KPiA+ID4gYml0LiBI b3dldmVyLCB3ZSBzdGlsbCBoYXZlIGEgaG9sZSBpZiB3ZSBtdXN0IGhhbmRsZSB0aGUgc2VxdWVu Y2UNCj4gPiA+IG1tYXAoLi4uLCBlbmNsYXZlX2ZkKSBiZWluZyBjYWxsZWQgYmVmb3JlIEVDUkVB VEUgaW9jdGwuIFdlIGNhbid0IGxlYXZlDQo+ID4gPiB2bV9wZ29mZiBub3Qgc2V0IGZvciB0aG9z ZSBjYXNlcy4NCj4gPiA+IA0KPiA+ID4gU2luY2Ugbm8gb25lIGRvZXMgdGhhdCBzbyBmYXIsIGNh biB3ZSBleHBsaWNpdGx5IHJldHVybiBhbiBlcnJvciBmcm9tDQo+ID4gPiBzZ3hfbW1hcCB3aGVu IHRoYXQgaGFwcGVucz8NCj4gPiA+IE90aGVyIHN1Z2dlc3Rpb25zPw0KPiA+IA0KPiA+IEFzIEkg cmVwbGllZCB0byBwYXRjaCA0LzQsIEkgYmVsaWV2ZSB1c2Vyc3BhY2Ugc2hvdWxkIHBhc3MgdGhl IGNvcnJlY3QgIA0KPiA+IHBnb2ZmIGluDQo+ID4gbW1hcCgpLiAgSXQncyB3cm9uZyB0byBhbHdh eXMgcGFzcyAwIG9yIGFueSByYW5kb20gdmFsdWUuDQo+ID4gDQo+ID4gSWYgdXNlcnNwYWNlIGZv bGxvdyB0aGUgbW1hcCgpIHJ1bGUsIHlvdSB3b24ndCBuZWVkIHRvIG1hbnVhbGx5IHNldCAgDQo+ ID4gdm1fcGdvZmYNCj4gPiBoZXJlICh3aGljaCBpcyBoYWNreSBJTUhPKS4gIEV2ZXJ5dGhpbmcg d29ya3MgZmluZS4NCj4gPiANCj4gDQo+IFNHWCBkcml2ZXIgd2FzIGZvbGxvd2luZyBNQVBfQU5P TllNT1VTIHNlbWFudGljcy4gSWYgd2UgY2hhbmdlIHRoYXQsIGl0J2QgIA0KPiBicmVhayBjdXJy ZW50IHVzYWdlL0FCSS4NCg0KSXMgdGhlcmUgYW55IGRvYy9yZWZlcmVuY2UgbWVudGlvbmluZyB0 aGlzPyANCg0KPiANCj4gSSBzdGlsbCB0aGluayByZXR1cm5pbmcgZXJyb3IgZm9yIGNhc2VzIG1t YXAoLi4uLCBlbmNsYXZlX2ZkKSBpZiBlbmNsYXZlICANCj4gaXMgbm90IGNyZWF0ZWQgd291bGQg YmUgbGVzcyBpbnRydXNpdmUgY2hhbmdlLg0KDQpCdXQgeW91IG5lZWQgdGhlIGZpcnN0IG1tYXAo KSB0byB3b3JrIGJlZm9yZSBJT0NUTChlY3JlYXRlKSB0byBnZXQgZW5jbGF2ZSdzDQpiYXNlIGFk ZHJlc3MsIGNvcnJlY3Q/DQoNCj4gDQo+IEhhaXRhbw0KDQo=