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=-0.8 required=3.0 tests=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 8A893ECDE3D for ; Fri, 19 Oct 2018 16:14:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 46F8320838 for ; Fri, 19 Oct 2018 16:14:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 46F8320838 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727818AbeJTAVM (ORCPT ); Fri, 19 Oct 2018 20:21:12 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:39061 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727567AbeJTAVL (ORCPT ); Fri, 19 Oct 2018 20:21:11 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by eu-smtp-1.mimecast.com with ESMTP id uk-mta-1-mF0juKmjPuevShxwYYO93Q-1; Fri, 19 Oct 2018 17:14:23 +0100 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 19 Oct 2018 17:14:25 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Fri, 19 Oct 2018 17:14:25 +0100 From: David Laight To: "casey.fitzpatrick@timesys.com" , "lukas@wunner.de" , "mingo@kernel.org" , "tglx@linutronix.de" , "m.duckeck@kunbus.de" , "hpa@zytor.com" , "akshay.bhat@timesys.com" , "linux-kernel@vger.kernel.org" , "linux-tip-commits@vger.kernel.org" Subject: RE: [tip:irq/core] genirq: Fix race on spurious interrupt detection Thread-Topic: [tip:irq/core] genirq: Fix race on spurious interrupt detection Thread-Index: AQHUZ8EwaebSceNiZEOcNx/JXfS6JKUmuolg Date: Fri, 19 Oct 2018 16:14:25 +0000 Message-ID: <2bbbe6ba27424b3b83d7f22bafea13ad@AcuMS.aculab.com> References: <1dfd8bbd16163940648045495e3e9698e63b50ad.1539867047.git.lukas@wunner.de> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: mF0juKmjPuevShxwYYO93Q-1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogTHVrYXMgV3VubmVyDQo+IFNlbnQ6IDE5IE9jdG9iZXIgMjAxOCAxNjozNA0KPiANCj4g Z2VuaXJxOiBGaXggcmFjZSBvbiBzcHVyaW91cyBpbnRlcnJ1cHQgZGV0ZWN0aW9uDQo+IA0KPiBD b21taXQgMWU3N2QwYTFlZDc0ICgiZ2VuaXJxOiBTYW5pdGl6ZSBzcHVyaW91cyBpbnRlcnJ1cHQg ZGV0ZWN0aW9uIG9mDQo+IHRocmVhZGVkIGlycXMiKSBtYWRlIGRldGVjdGlvbiBvZiBzcHVyaW91 cyBpbnRlcnJ1cHRzIHdvcmsgZm9yIHRocmVhZGVkDQo+IGhhbmRsZXJzIGJ5Og0KPiANCj4gYSkg aW5jcmVtZW50aW5nIGEgY291bnRlciBldmVyeSB0aW1lIHRoZSB0aHJlYWQgcmV0dXJucyBJUlFf SEFORExFRCwgYW5kDQo+IGIpIGNoZWNraW5nIHdoZXRoZXIgdGhhdCBjb3VudGVyIGhhcyBpbmNy ZWFzZWQgZXZlcnkgdGltZSB0aGUgdGhyZWFkIGlzDQo+ICAgIHdva2VuLg0KDQpUaGF0IHNlZW1z IGhvcnJpYmx5IGJyb2tlbi4NCldoYXQgaXMgaXQgdHJ5aW5nIHRvIGFjaGlldmU/DQoNClRoZXJl IGFyZSAoYXQgbGVhc3QpIHR3byBjb21tb24gY2FzZXMgd2hlcmUgSVJRX0hBTkRMRUQgZG9lc24n dCBnZXQgcmV0dXJuZWQuDQooVW5sZXNzIHRoZSBkcml2ZXIgYWx3YXlzIHJldHVybnMgaXQgdG8g YXZvaWQgdGhlIG1lc3NhZ2UuKQ0KDQoxKSBUaGUgSU9XIHRoYXQgY2F1c2VzIHRoZSBoYXJkd2Fy ZSB0byBkcm9wIGEgbGV2ZWwgc2Vuc2l0aXZlIElSUSBpcyBwb3N0ZWQNCiAgIG9uIHRoZSBidXMg KGV0YykgYW5kIGhhcHBlbnMgbGF0ZSBlbm91Z2ggdGhhdCB0aGUgSVJRIGxpbmUgaXMgc3RpbGwN CiAgIGFzc2VydGVkIHdoZW4gdGhlIGlyZXQgZXhlY3V0ZXMuDQogICBJZiB0aGlzIGhhcHBlbnMg YWxsIHRoZSB0aW1lIHlvdSBuZWVkIHRvIGZsdXNoIHRoZSBJT1csIGJ1dCBpZiBvbmx5DQogICBv Y2Nhc2lvbmFsbHkgaXQgZG9lc24ndCBtYXR0ZXIgYW5kIHlvdSBkb24ndCB3YW50IGEgbWVzc2Fn ZS4NCg0KMikgVHlwaWNhbGx5IGFuIGV0aGVybmV0IGRyaXZlciBJU1IgaGFzIHRvIGVuYWJsZSB0 aGUgaW50ZXJydXB0IGFuZCB0aGVuDQogICBjaGVjayB0aGUgcmluZyBmb3Igd29yayBiZWZvcmUg cmV0dXJuaW5nIGZyb20gdGhlIGludGVycnVwdC4NCiAgIElmIGEgcGFja2V0IGFycml2ZXMgYXQg dGhpcyB0aW1lIGl0IG1pZ2h0IGJlIHByb2Nlc3NlZCBieSB0aGUgJ29sZCcNCiAgIElTUiBpbnZv Y2F0aW9uIGJ1dCBzdGlsbCBnZW5lcmF0ZSBhbm90aGVyIGludGVycnVwdC4NCiAgIElmIG5vIG1v cmUgcGFja2V0cyBhcnJpdmUgdGhlIHNlY29uZCBJU1IgaW52b2NhdGlvbiB3aWxsIGZpbmQgbm8g d29yay4NCiAgIEFnYWluIHRoaXMgaXMgbm9ybWFsIGJlaGF2aW91ci4NCiAgIChEZWZlcnJpbmcg ZXZlcnl0aGluZyB3aXRoIE5BUEkgbWlnaHQgbWFrZSB0aGlzIG5vdCBoYXBwZW4gLSBidXQgb3Ro ZXINCiAgIGludGVycnVwdHMgZW5kIHVwIHdvcmtpbmcgdGhlIHNhbWUgd2F5LikNCg0KSWYgeW91 IGFyZSByZWFsbHkgdHJ5aW5nIHRvIGRldGVjdCAnc3R1Y2snIGludGVycnVwdHMgdGhlbiB5b3Ug cHJvYmFibHkNCndhbnQgdG8gY291bnQgdW4taGFuZGxlZCBvbmVzIGFuZCB6ZXJvIHRoZSBjb3Vu dCBvbiBoYW5kbGVkIG9uZXMuDQpJJ20gYWxzbyBwcmV0dHkgc3VyZSB5b3UgZG9uJ3QgbmVlZCBh biBhdG9taWMgY291bnRlci4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtl c2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBV Sw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==