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 X-Spam-Level: X-Spam-Status: No, score=-4.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FORGED_MUA_MOZILLA,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C81B4C433F5 for ; Tue, 14 Sep 2021 19:03:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A805A61168 for ; Tue, 14 Sep 2021 19:03:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231161AbhINTFA (ORCPT ); Tue, 14 Sep 2021 15:05:00 -0400 Received: from mga17.intel.com ([192.55.52.151]:33748 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232420AbhINTE7 (ORCPT ); Tue, 14 Sep 2021 15:04:59 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10107"; a="202277891" X-IronPort-AV: E=Sophos;i="5.85,292,1624345200"; d="scan'208";a="202277891" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Sep 2021 12:03:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,292,1624345200"; d="scan'208";a="433118741" Received: from orsmsx606.amr.corp.intel.com ([10.22.229.19]) by orsmga006.jf.intel.com with ESMTP; 14 Sep 2021 12:03:39 -0700 Received: from orsmsx611.amr.corp.intel.com (10.22.229.24) by ORSMSX606.amr.corp.intel.com (10.22.229.19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2242.12; Tue, 14 Sep 2021 12:03:39 -0700 Received: from orsmsx601.amr.corp.intel.com (10.22.229.14) 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 15.1.2242.12; Tue, 14 Sep 2021 12:03:38 -0700 Received: from ORSEDG602.ED.cps.intel.com (10.7.248.7) by orsmsx601.amr.corp.intel.com (10.22.229.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2242.12 via Frontend Transport; Tue, 14 Sep 2021 12:03:38 -0700 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (104.47.56.173) by edgegateway.intel.com (134.134.137.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2242.12; Tue, 14 Sep 2021 12:03:38 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=PXln49XG7nm//GfsVT30uDwPDDCPxrqFKIyP+WpCtCOodQsYcn8GCMuz1zvTwdmXWiE3TplvDN6hFJYw+PgnPmsTtI4R4yQp0mNMGiBv0urb19Pr/ogYDDOFm/oWxFItlc/JFRnddEvOuZgdvyiTh4H5xaq5nnhEO9dlcYb1b+Xlnfdhwt6A52PjDfSshjSLnbE/WYRNkVIc4n3/T+R1hs8qkPdgveKIwuHdEX4EPEEZcN9AP9IiBRUfz9UfVC/rHEqhlOU0cl/r8h0cv9YI0+7o7qPJ1z2bES/2nFk7E0HuNIHVqkIYZneIspD2YpyncWrAxsgFammq740X0hUZ1g== 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; bh=PROnw7PL5pJvMOqpIcffd+9jFVydL2xpqTP3ONHBQ/o=; b=YUrRdCUZVbwP4C/723E3FbIrvBUN+i37sCpU49mbpsa965yfYWtHf3uD3mB5ELIMdN8HfOqacS4mJzIVRMEiMY/Y4qQD8nX7hJe/sjzH4PoKgtBnEDSN+xTSptKBrXqCTjrjnQMageIwbZCYVmniXvFMhgOmQzk6zP+1+zrf/r65r7WamD6zZqvSBaox6pe1ZWfZeb2lMKn6Z8X9x9rKoV+1cNs6NrdLxwChsSrlZ5fNe6FiNpgg9fpwwQMZdvH/hhcmZIfSRRwiDiEQZOrSJmiLOZXPNBpS18MSJQREpa1w0JJntRqlbAcGKWze7T7RXrTAYXcNW2ao2EbDTCGemA== 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 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel.onmicrosoft.com; s=selector2-intel-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=PROnw7PL5pJvMOqpIcffd+9jFVydL2xpqTP3ONHBQ/o=; b=UNRctlYUxzHIFkDrY/jT/Bj417W4x2LK56+yaJavhlUYIrMrVW5NWGbc0ePsYoV+3tRld9V/NYPeRzP5YJdcKNbva3YfCwakQaCi6ITzhl4qHSsADpmSeBEpZySdiG/7Uuqo4bPpKY2jg+f4KZYTSza8S8+sFu4wD8ZqdihuPuY= Received: from BYAPR11MB3320.namprd11.prod.outlook.com (2603:10b6:a03:18::25) by BY5PR11MB4037.namprd11.prod.outlook.com (2603:10b6:a03:188::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.14; Tue, 14 Sep 2021 19:03:36 +0000 Received: from BYAPR11MB3320.namprd11.prod.outlook.com ([fe80::6db5:94d3:e534:617c]) by BYAPR11MB3320.namprd11.prod.outlook.com ([fe80::6db5:94d3:e534:617c%7]) with mapi id 15.20.4500.019; Tue, 14 Sep 2021 19:03:36 +0000 From: "Mehta, Sohil" To: "Hansen, Dave" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" CC: "Luck, Tony" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , "Lutomirski, Andy" , Jens Axboe , Christian Brauner , Peter Zijlstra , Shuah Khan , Arnd Bergmann , Jonathan Corbet , "Raj, Ashok" , Jacob Pan , "Kammela, Gayatri" , "Zeng, Guang" , "Williams, Dan J" , "Witt, Randy E" , "Shankar, Ravi V" , "Thomas, Ramesh" , "linux-api@vger.kernel.org" , "linux-arch@vger.kernel.org" , "linux-kselftest@vger.kernel.org" Subject: Re: [RFC PATCH 00/13] x86 User Interrupts support Thread-Topic: [RFC PATCH 00/13] x86 User Interrupts support Thread-Index: AQHXqNqTrxrKS5qv40GIaIDowcHo6Kuiad+AgAEC0AA= Date: Tue, 14 Sep 2021 19:03:36 +0000 Message-ID: References: <20210913200132.3396598-1-sohil.mehta@intel.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.6.200.16 user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.14.0 x-ms-exchange-imapappendstamp: BYAPR11MB3320.namprd11.prod.outlook.com (15.20.4500.019) authentication-results: intel.com; dkim=none (message not signed) header.d=none;intel.com; dmarc=none action=none header.from=intel.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 52cbe371-8034-4aef-05be-08d977b25b15 x-ms-traffictypediagnostic: BY5PR11MB4037: x-ld-processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr,ExtFwd x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; 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:BYAPR11MB3320.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(39860400002)(376002)(396003)(136003)(346002)(366004)(83380400001)(4326008)(122000001)(55016002)(9686003)(71200400001)(86362001)(33656002)(2906002)(478600001)(64756008)(66446008)(316002)(7696005)(7416002)(66476007)(66946007)(54906003)(66556008)(26005)(8676002)(110136005)(186003)(38070700005)(53546011)(6506007)(38100700002)(5660300002)(76116006)(8936002)(52536014)(65966003)(43740500002);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?utf-8?B?YTdMRCtVaVJJV1V6Q1RJb0srU1RaellSdkJONU04WWlRbVpGZ2ZkZ1hwakV5?= =?utf-8?B?Qm5zbk9aU1lPTEJhNzRkTndieldUR0cwS0o5elRMb09xYXRFZTFWWUVFOUNh?= =?utf-8?B?cFdFb2lXYWZxZmlXNXR5TFdXQ3AzVENzaWpUWGJwd3BBSGFmbHlJRDBkQmlB?= =?utf-8?B?M1JyYm5yT3B6TCtUTnZod0xEUjlBVVNKT0VjZlNRN2t2VkxVUHBPUlJWYkY5?= =?utf-8?B?U0xLbXRCYTAzb0pETVhzVFd1c0RJM3RvV0ZsMHEwbmNmYkxSTUZDOTBmcjNn?= =?utf-8?B?ZnA3RmR5SHFLdWI0bm54TnJTS21PcU5DMHN3SWdQRWVCVGNEODA1c1hBUW1i?= =?utf-8?B?NElMZnIxMkJUaEJHSUFoLzRBU3hiaWxTQVk4YmxWaDZiWllIRHpNdmV1OFg5?= =?utf-8?B?OGxDQk0rNnBLQ2FGT0J5cXlIeUF4Y0xnY3JyNXVXQTZSOVJJVHFVeE00WmJR?= =?utf-8?B?bEVlYmkvQ296ek8rSndIbmRlcFQwU1VwSjBkUmJpRFRobFVXTkhwd3VlRU9E?= =?utf-8?B?ektMYzVNYzRZOXkyK0k0R0FsVWpKNWlkVkwvV3ZBR2h0YmxRdVpDVHNBc1k3?= =?utf-8?B?Z2FLSHlnTGV5MmIyTkY4bk51YUxJR2JHNnJyTkN1ZFBxeWtQOFJyZWFZd21X?= =?utf-8?B?T0t1cXYzbFVxK0ZUVmFUZVBQc1Vhdy9aOUVnVHVXei9tR0QvZXUvU0VGcWlk?= =?utf-8?B?aXdsME1UYStldm1LSnowVGRqOUdGcTZhdTZoY28yak1IdDBLMTBvM0t3L0JV?= =?utf-8?B?YnluVmcwdGlqTWdXM3pINGR6Qm1mRVJKMnpWNEZLQ3RoN0pJT01pWDgrbVFT?= =?utf-8?B?bFd4UVRjTHZPdEc0SnFMQ203TSs1eFhsYjc2ODlISUNGZllUOU1YS0ZFOW9s?= =?utf-8?B?Q2x6eEc3Wk9SQU1zRmZiSHgxYXUwbE9IRis3NFU1aDlueVF6S2llSzRUVTBP?= =?utf-8?B?djBYMmp0WkJkbkxLZUFDOGFSQnJLN1c3Y3h1cW1uRkJycHlSTHVRQko4YktC?= =?utf-8?B?UnZDQnJOdUxPME1pRTlTdTZQMjYvanhDOG9iTkFDbGJCcTVQcGsrOVl3c1BI?= =?utf-8?B?SFJoQ0ZKazk3aTZKUko3WkJEa3lCODFUb1FYYTJaWkxnYVFmRERVbjc3YWg5?= =?utf-8?B?aWhycU82OUZNV0dCUWxYL3l1OTMwY0JaWmVBQjdOQU85QjM1d0E4d2xvcDBC?= =?utf-8?B?MmlweFU5SE5TL0haSXhzM0Q4N25ZRGUvU1dBajJVSHVzNnkwQ0ZuaXB6Q0ZP?= =?utf-8?B?aVpnbDBTSjM1ODZ4ZDRSQUUvQVE5cnR3V1U5a0ZNdkMzVmhQcW1NZSt3U2tQ?= =?utf-8?B?VzVUUHA0WEl4eE9xWUYzMnpibVlkdkNLSnh3MnNaRFNqRzl6dDNoNFkxQzhP?= =?utf-8?B?a0gwMXFVMlpadEEwYmJKNTdMek1pc1FtZTE4NUY0dUptbE45ZWNWbWYrRmRB?= =?utf-8?B?aWZFTnBSZHJyaFdSSFhFMk5NRmF4QWdQd2xDS2RINkZ0UDI2anRBV1ZWMStz?= =?utf-8?B?REhIQW4xMDJuU0lLelhJTjRjMHRmT3NDbWR4TGxUVVZWNnU2aCs3dGlBWHhT?= =?utf-8?B?d0FHM0ptK05EOXVuYm1ETjZtbzVXd2NCZ2k1NVVIMG5FY2VrTUFHWTcxem5P?= =?utf-8?B?MVU1VEtVdzY3aEpKN1YzZGpUamxsYkludjhZd2YxNVhSQTJKcThLOXdYNmQy?= =?utf-8?B?ZnFmanNHdUJQcVFFamluQlpJZ0JKSDNjNFF5b3VwZy9yT1piMlJ0NGE5anlG?= =?utf-8?Q?+UhL5mXjBd0dA+H+WkjTCZPy42Gg8BoyhUcS0Sg?= Content-Type: text/plain; charset="utf-8" Content-ID: <706D106DC9625046B5DCB2AA0B870AE3@intel.onmicrosoft.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BYAPR11MB3320.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 52cbe371-8034-4aef-05be-08d977b25b15 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Sep 2021 19:03:36.3595 (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: xYrYpHdR/3MDYJOAGsy2b5KzDfc8BMB7LbQQK3bCFA+gt6G8r/L4UTXf3Vt7CLSRFO/MlYP7EYiPQwTrdbSZVg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR11MB4037 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org UmVzZW5kaW5nLi4gVGhlcmUgd2VyZSBzb21lIGVtYWlsIGRlbGl2ZXJ5IGlzc3Vlcy4NCg0KT24g OS8xMy8yMDIxIDE6MjcgUE0sIERhdmUgSGFuc2VuIHdyb3RlOg0KPglVc2VyIEludGVycnVwdHMg ZGlyZWN0bHkgZGVsaXZlciBldmVudHMgdG8gdXNlciBzcGFjZSBhbmQgYXJlDQo+CTEweCBmYXN0 ZXIgdGhhbiB0aGUgY2xvc2VzdCBhbHRlcm5hdGl2ZS4NCg0KVGhhbmtzIERhdmUuIFRoaXMgaXMg ZGVmaW5pdGVseSBtb3JlIGF0dGVudGlvbi1ncmFiYmluZyB0aGFuIHRoZQ0KcHJldmlvdXMgaW50 cm8uIEknbGwgaW5jbHVkZSB0aGlzIG5leHQgdGltZS4NCg0KT25lIHRoaW5nIHRvIG5vdGUsIHRo ZSAxMHggZ2FpbiBpcyBvbmx5IGFwcGxpY2FibGUgZm9yIFVzZXIgSVBJcy4NCkZvciBvdGhlciBz b3VyY2Ugb2YgVXNlciBJbnRlcnJ1cHRzIChsaWtlIGtlcm5lbC10by11c2VyDQpub3RpZmljYXRp b25zIGFuZCBvdGhlciBleHRlcm5hbCBzb3VyY2VzKSwgd2UgZG9uJ3QgaGF2ZSB0aGUgZGF0YQ0K eWV0Lg0KDQpJIHJlYWxpemVkIHRoZSBVc2VyIElQSSBkYXRhIGluIHRoZSBjb3ZlciBhbHNvIG5l ZWRzIHNvbWUNCmNsYXJpZmljYXRpb24uIFRoZSAxMHggZ2FpbiBpcyBvbmx5IHNlZW4gd2hlbiB0 aGUgcmVjZWl2ZXIgaXMNCnNwaW5uaW5nIGluIFVzZXIgc3BhY2UgLSB3YWl0aW5nIGZvciBpbnRl cnJ1cHRzLg0KDQpJZiB0aGUgcmVjZWl2ZXIgd2VyZSB0byBibG9jayAod2FpdCkgaW4gdGhlIGtl cm5lbCwgdGhlIHBlcmZvcm1hbmNlDQp3b3VsZCBkcm9wIGFzIGV4cGVjdGVkLiBIb3dldmVyLCBV c2VyIElQSSAoYmxvY2tlZCkgd291bGQgc3RpbGwgYmUNCjEwJSBmYXN0ZXIgdGhhbiBFdmVudGZk IGFuZCA0MCUgZmFzdGVyIHRoYW4gc2lnbmFscy4NCg0KSGVyZSBpcyB0aGUgdXBkYXRlZCB0YWJs ZToNCistLS0tLS0tLS0tLS0tLS0tLS0tLS0rLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLSsNCnwg SVBDIHR5cGUgICAgICAgICAgICB8ICAgUmVsYXRpdmUgTGF0ZW5jeSAgICAgIHwNCnwgICAgICAg ICAgICAgICAgICAgICB8KG5vcm1hbGl6ZWQgdG8gVXNlciBJUEkpIHwNCistLS0tLS0tLS0tLS0t LS0tLS0tLS0rLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLSsNCnwgVXNlciBJUEkgICAgICAgICAg ICB8ICAgICAgICAgICAgICAgICAgICAgMS4wIHwNCnwgVXNlciBJUEkgKGJsb2NrZWQpICB8ICAg ICAgICAgICAgICAgICAgICAgOC45IHwNCnwgU2lnbmFsICAgICAgICAgICAgICB8ICAgICAgICAg ICAgICAgICAgICAxNC44IHwNCnwgRXZlbnRmZCAgICAgICAgICAgICB8ICAgICAgICAgICAgICAg ICAgICAgOS43IHwNCnwgUGlwZSAgICAgICAgICAgICAgICB8ICAgICAgICAgICAgICAgICAgICAx Ni4zIHwNCnwgRG9tYWluICAgICAgICAgICAgICB8ICAgICAgICAgICAgICAgICAgICAxNy4zIHwN CistLS0tLS0tLS0tLS0tLS0tLS0tLS0rLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLSsNCg0KLS1T b2hpbA0KDQo=