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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 409FDC43441 for ; Wed, 14 Nov 2018 21:29:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE68922419 for ; Wed, 14 Nov 2018 21:29:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=impinj.com header.i=@impinj.com header.b="NqsYK5eo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EE68922419 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=impinj.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-pci-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728239AbeKOHec (ORCPT ); Thu, 15 Nov 2018 02:34:32 -0500 Received: from mail-eopbgr730132.outbound.protection.outlook.com ([40.107.73.132]:6123 "EHLO NAM05-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726427AbeKOHec (ORCPT ); Thu, 15 Nov 2018 02:34:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=impinj.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YZy4M4YQ4a09oqR0XliqIRH//qvkKaiE8QbdCC5G+y8=; b=NqsYK5eo4qdhIT2OU4LqtyB6PkmDfuDZ3w+sx+QAAfWZDRd9NaOupNVxHavxh6fUDzzo5G2Kc4fX2Hum0X0vcFluZEH85GLEui9gcRLFM2ZQrAdhMN34HEu8Enf9bXRAEH89hPrLdrZGBN20ZUGsrkI/bECuB2V6UkrJih+M/zs= Received: from MWHPR0601MB3708.namprd06.prod.outlook.com (10.167.236.38) by MWHPR0601MB3628.namprd06.prod.outlook.com (10.167.236.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1294.30; Wed, 14 Nov 2018 21:29:29 +0000 Received: from MWHPR0601MB3708.namprd06.prod.outlook.com ([fe80::f51a:d8dd:1aad:3bf9]) by MWHPR0601MB3708.namprd06.prod.outlook.com ([fe80::f51a:d8dd:1aad:3bf9%3]) with mapi id 15.20.1294.045; Wed, 14 Nov 2018 21:29:29 +0000 From: Trent Piepho To: "lorenzo.pieralisi@arm.com" CC: "jingoohan1@gmail.com" , "gustavo.pimentel@synopsys.com" , "faiz_abbas@ti.com" , "stable@vger.kernel.org" , "joao.pinto@synopsys.com" , "marc.zyngier@arm.com" , "linux-pci@vger.kernel.org" , "vigneshr@ti.com" , "bhelgaas@google.com" Subject: Re: [PATCH] PCI: dwc: Fix interrupt race in when handling MSI Thread-Topic: [PATCH] PCI: dwc: Fix interrupt race in when handling MSI Thread-Index: AQHUbYgjUY6vVpEq1Ees3VO0f7sjeaVC5fqAgAASigCAAV9pgIAAXX+AgAEgwwCAAJhwAIAF+FkAgAOANgA= Date: Wed, 14 Nov 2018 21:29:28 +0000 Message-ID: <1542230968.30311.485.camel@impinj.com> References: <20181027000028.21343-1-tpiepho@impinj.com> <20181106145347.GB19060@e107981-ln.cambridge.arm.com> <725afc4a-ec19-e4e6-7091-f499bfb63652@synopsys.com> <1541615551.30311.286.camel@impinj.com> <60173610-25c2-5f11-a55f-bd431199dc0c@synopsys.com> <1541710298.30311.349.camel@impinj.com> <20181112160148.GA26379@e107981-ln.cambridge.arm.com> In-Reply-To: <20181112160148.GA26379@e107981-ln.cambridge.arm.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=tpiepho@impinj.com; x-originating-ip: [216.207.205.253] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MWHPR0601MB3628;6:4uomWALiVLg6k4TmB/Z3VX9gBXqT1dYE0E6UmtzYJkPeQ3MVVyV9wseAeSskzipq5Yz7s5IpEUBesVVKPdKjVbExpqlTVXadvC6Qsj4evOGFkCLTi6WPk57Chj6LgP7Vdil+DQlrVOFlZAiyycjwDxKBKmAVhaEXUuSixRiUAKkKcTPD9Hzyl19pQ+DwWKc4x0YNBJqMXFIg4+M46AKRbvTXzUyUcMOXr4AOT7nq0+0xfaYaDyl1PDp2R9cD6+G7C59eHpcfBO9Hzl5T5tc3a4q2S2kr3MooLOpy82CB9CRJA3EOTW/VO4O6+vtIACfXe7klIUVd4XZlsGEV3Xz4PeQlfZUuLeldtkuHmPPbBWCEB2GZne5KLhq0nXsfG8Bvty6J2TlA+wmzVIitULQI8t1ywMm/Q8cKTIHzpfuqfQpjCVgwyFqvlV2NFRaVukvTvyec7EW412MgNeFfys6jfQ==;5:iW/EBksrmKcIW4CbFvdg2D1kDdmoSefHYt3MchzqMT7NlH27A8eZsiDsxp3FQRPc7bLOq/YbzBHDjXDQllx0SQP/H/+bgvdEryBxrBdC4tkjcb9YfuqItz8mbwz/pM3Xb9rNCnDpnU4btzeN0vvW7fjJDsMjFMsSSktcjxtOxx0=;7:UGudLUwAuXL1nSDA9qsbYkcYer/zCt+8NtJhLJYVVpjGVHWvCnVqc6E64tLj43hFcWQF0XXZXmuK8PTfEIuY4B7TBRaX6mC7oR3lN7vNo5dYSi3+zflj3fktCkMgl3vzhNg6O1QITuXL6G9+KRc1UQ== x-ms-exchange-antispam-srfa-diagnostics: SOS; x-ms-office365-filtering-correlation-id: 91a2a8ad-33c8-4ae2-60ba-08d64a78428b x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390098)(7020095)(4652040)(8989299)(5600074)(711020)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:MWHPR0601MB3628; x-ms-traffictypediagnostic: MWHPR0601MB3628: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(3231415)(944501410)(52105112)(3002001)(10201501046)(148016)(149066)(150057)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(20161123560045)(20161123562045)(20161123564045)(201708071742011)(7699051)(76991095);SRVR:MWHPR0601MB3628;BCL:0;PCL:0;RULEID:;SRVR:MWHPR0601MB3628; x-forefront-prvs: 085634EFF4 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(136003)(376002)(366004)(39850400004)(346002)(396003)(199004)(189003)(103116003)(6512007)(316002)(25786009)(6116002)(3846002)(66066001)(2616005)(81166006)(36756003)(71190400001)(76176011)(478600001)(4326008)(14454004)(54906003)(476003)(105586002)(8676002)(446003)(229853002)(99286004)(6916009)(305945005)(81156014)(7736002)(11346002)(2351001)(6486002)(6436002)(71200400001)(2501003)(68736007)(26005)(8936002)(93886005)(97736004)(186003)(5660300001)(7416002)(86362001)(6506007)(102836004)(39060400002)(2900100001)(486006)(53936002)(256004)(6246003)(4001150100001)(2906002)(5640700003)(106356001);DIR:OUT;SFP:1102;SCL:1;SRVR:MWHPR0601MB3628;H:MWHPR0601MB3708.namprd06.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: impinj.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: g6E53I/ea7pptOv6ZnhhNnNgto8pyVICM8ng3juGepoSOeUxp6+6ejoChoSjefmAoEGnDVnaz9R1/jOBvpq9kGW0e0SFuxjXKejdgVvzG4WkYve+loD6TSKtijW3XvjzsZocErMfu+nw4TSXJkuOwQUEWy4BT25TjRxFxca++B5+dniRzjMlUnubct4ykdOtdQAmsgE2bFS6AlcT2jsKpQOB7Som9KJWOo6XRt4gG+LQIP8N4+hzMru/Ut//1c0+I2DDw1orC4mPouzJ2iMV/v+iXZXqv/e4SQq2ysicgx3sTQiwd5WGoey0y1KIdsrL1xUNV51HnOcARoTfo5kldSd7hkl23oHIwN1r1ehBkRc= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: impinj.com X-MS-Exchange-CrossTenant-Network-Message-Id: 91a2a8ad-33c8-4ae2-60ba-08d64a78428b X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Nov 2018 21:29:29.0243 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 6de70f0f-7357-4529-a415-d8cbb7e93e5e X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR0601MB3628 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org T24gTW9uLCAyMDE4LTExLTEyIGF0IDE2OjAxICswMDAwLCBMb3JlbnpvIFBpZXJhbGlzaSB3cm90 ZToNCj4gT24gVGh1LCBOb3YgMDgsIDIwMTggYXQgMDg6NTE6MzhQTSArMDAwMCwgVHJlbnQgUGll cGhvIHdyb3RlOg0KPiA+IA0KPiA+IFRoZSByZWFzb24gaXMgdGhhdCB0aGUgR0lDIGludGVycnVw dCBhYm92ZSB0aGUgZHdjIGlzIG5vbi1yZWVudHJhbnQuIA0KPiA+IEl0IHJlbWFpbnMgbWFza2Vk IChha2EgYWN0aXZlWzFdKSBkdXJpbmcgdGhpcyBlbnRpcmUgcHJvY2VzcyAoMSB0byAxMCkuDQo+ ID4gIFRoaXMgbWVhbnMgZXZlcnkgTVNJIGlzIGVmZmVjdGl2ZWx5IGFscmVhZHkgbWFza2VkLiAg U28gbWFza2luZyB0aGUNCj4gPiBhY3RpdmUgTVNJKHMpIGEgMm5kIHRpbWUgZ2FpbnMgbm90aGlu ZyBiZXNpZGVzIHByZXZlbnRpbmcgc29tZSBleHRyYQ0KPiA+IGVkZ2VzIGZvciBhIG1hc2tlZCBp bnRlcnJ1cHQgZ29pbmcgdG8gdGhlIEFSTSBHSUMuDQo+ID4gDQo+ID4gSW4gdGhlb3J5LCBpZiB0 aGUgR0lDIGludGVycnVwdCBoYW5kbGVyIHdhcyByZWVudHJhbnQsIHRoZW4gb24gcmVjZWlwdA0K PiA+IG9mIGEgbmV3IE1TSSB3ZSBjb3VsZCByZS1lbnRlciB0aGUgZHdjIGhhbmRsZXIgb24gYSBk aWZmZXJlbnQgQ1BVIGFuZA0KPiA+IHJ1biB0aGUgbmV3IE1TSSAoYSBkaWZmZXJlbnQgTVNJISkg YXQgdGhlIHNhbWUgdGltZSBhcyB0aGUgb3JpZ2luYWwgTVNJDQo+ID4gaGFuZGxlciBpcyBzdGls bCBydW5uaW5nLg0KPiA+IA0KPiA+IFRoZXJlIGRpZmZlcmVuY2UgaGVyZSBpcyB0aGF0IGJ5IHVu bWFza2luZyBpbiB0aGUgaW50ZXJydXB0IGluIHRoZSBHSUMNCj4gPiBiZWZvcmUgdGhlIGR3YyBo YW5kbGVyIGlzIGZpbmlzaGVkLCBtYXNraW5nIGFuIGluZGl2aWR1YWwgTVNJIGluIHRoZQ0KPiA+ IGR3YyBpcyBubyBsb25nZXIgYSAybmQgcmVkdW5kYW50IG1hc2tpbmcuDQo+IA0KPiBUaGVyZSBp cyBub3QgKGFuZCB0aGVyZSBtdXN0IG5vdCBiZSkgYW55dGhpbmcgaW4gRFdDIEhXIHRoYXQgYWxs b3dzDQo+IHVzIGFzc3VtZSBpdHMgImludGVycnVwdCBjb250cm9sbGVyIiBpcyBjYXNjYWRlZCB0 byBhIEdJQy4gSXQgbWF5DQo+IGNvcnJlc3BvbmQgdG8gd2hhdCB3ZSBhcmUgZGVidWdnaW5nIGJ1 dCBpdCBpcyBhbiBhc3N1bXB0aW9uIHdlIG11c3Qgbm90DQo+IG1ha2UgYW5kIGl0cyBkcml2ZXIg aGFzIHRvIHdvcmsgcmVnYXJkbGVzcyBvZiB3aGF0IGl0cyBpbnRlcnJ1cHQNCj4gY29udHJvbGxl ciBpcyBjb25uZWN0ZWQgdG8sIHRoYXQncyB0aGUgYmFzaXMgb2YgaGllcmFyY2hpY2FsIElSUSBj aGlwcw0KPiBtYW5hZ2VtZW50LCBhdCBsZWFzdCBmcm9tIG15IG5hcnJvdyBhbmQgKG1vc3QgbGlr ZWx5KSBpbmNvbXBsZXRlDQo+IGtub3dsZWRnZSBvZiB0aGUgSVJRIHN1YnN5c3RlbS4NCg0KSWYg eW91IG1lYW4gd2UgY2FuJ3QgYXNzdW1lIHRoZSBkd2MgaXMgY2FzY2FkZWQgZnJvbSBzcGVjaWZp Y2FsbHkgYQ0KR0lDLCB0b3RhbGx5IGFncmVlLg0KDQpJZiB5b3UgbWVhbiB3ZSBjYW4ndCBhc3N1 bWUgdGhlIGR3YyBpcyBjYXNjYWRlZCBmcm9tICJzb21ldGhpbmciLCB0aGVuDQpJIGRpc2FncmVl LiAgVGhlIGRyaXZlciBjYW4ndCBwb3NzaWJseSBiZSBhdCB0aGUgdG9wIGxldmVsLiAgSG93IHdv dWxkDQp0aGUgY3B1IGV2ZXIgZW50ZXIgaXQ/DQoNCldoYXQgSSB0aGluayByZWFsbHkgaXMgd2hh dCBtYXR0ZXJzIGhlcmUgaXMgaWYgdGhlIHRoZSBjaGFpbiB0aGUgZHdjIGlzDQpjYXNjYWRlZCBm cm9tIGFsbG93cyB0aGUgZHdjIHRvIGJlIGNhbGxlZCByZWVudHJhbnRseSBvciBub3QuDQoNCk9u IG15IHN5c3RlbSwgdGhlIGNvZGUgYmFzZSBJIGluc3BlY3RlZCBkb2VzIG5vdCBhbGxvdyB0aGF0 LiAgSSBkb24ndA0Ka25vdyBvZiBhbnkgd3JpdHRlbiBMaW51eCBpbnRlcnJ1cHQgcG9saWN5IHRo YXQgc2F5cyB0aGlzIG11c3QgYmUgdGhlDQpjYXNlLiAgSWYgaXQgaXMgbm90IHRoZSBjYXNlLCB0 aGVuIEkgc2VlIG90aGVyIHBvaW50cyBpbiB0aGUgZHdjIGRyaXZlcg0KdGhhdCBhcmUgcG90ZW50 aWFsbHkgcmFjeS4NCg==