Received: by 2002:ac0:a594:0:0:0:0:0 with SMTP id m20-v6csp1058335imm; Tue, 15 May 2018 13:11:06 -0700 (PDT) X-Google-Smtp-Source: AB8JxZpEocsA07LV70Wz8QgtlMVc3v9/K65AwtaTjXBnOYwnGrXmvATVUICMPQRL7bNJ2jhBcAwJ X-Received: by 2002:a17:902:64d0:: with SMTP id y16-v6mr15643318pli.349.1526415066481; Tue, 15 May 2018 13:11:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1526415066; cv=none; d=google.com; s=arc-20160816; b=P8nTzQoLzqPhMVDiC5ttSjCDvW4D16326alePrELU0ccRlsIJ3UOZejtEwTw6AT7eh PTVyi4ri+Ti0p0rOF2c7C8SvU1LLN7o7aVxv3oq7ik/Ju6s1MKuYRUIhcqU6OBU+92m7 7ZT3b77sNYNiAd6WcwLn+edEkeJIAowTnMSf9AdurIZcWdGYqYUkSsTv9xNfMX9kkowy sYxd1uK0pNZPlkFC5vYSB8OnntH3KFr3UVHFaa7R88+DQpZuwpvGkKZaTl8f7kKfceX6 2aDACiAHTS8jVOjtWJdka5An76wdgPWbDOzEfeSMUuDAOCyhEbQ8x1FL91YSaeJDJH/o bleA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :spamdiagnosticmetadata:spamdiagnosticoutput:msip_labels :content-language:accept-language:in-reply-to:references:message-id :date:thread-index:thread-topic:subject:cc:to:from:dkim-signature :arc-authentication-results; bh=rKMUooUSYzOL4W1qJp6qS8PJUx+8UO1Rq24Az2BuzEc=; b=yEMuwJbIUx97cTwkgwIPk4EL8BmZeazpfeI5EIDAvrO/CURSwXvaLrss1ZSdxmVw9C tn98wckZTkgOYpEfAWzkhkFLep4pUl5ixo4960Ao/h5uvOAoZP25nSyiO5hMa9/AhXZJ WdLDuYvvzKVdgwTx053NqC9zUnI4FHY3q5HjwAp/CSkuz1VAT4zBXQFx46I4/w+kQfbW FAu+d+3p2NVUr5NemonqOOo3EOFPqwf108L8uWJamtMuNO8jz0Ve+8WkRBRdG0dHEt4f mk2ZYTIubizcVkRmofhhEx+9ukwyXZwgufXvDjM49zzZZ/YNu+SgdOhXqONHHyBMtKVb jisQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@microsoft.com header.s=selector1 header.b=BGDpX5f7; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=microsoft.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i74-v6si821319pfd.105.2018.05.15.13.10.51; Tue, 15 May 2018 13:11:06 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@microsoft.com header.s=selector1 header.b=BGDpX5f7; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752526AbeEOUKc (ORCPT + 99 others); Tue, 15 May 2018 16:10:32 -0400 Received: from mail-pu1apc01on0078.outbound.protection.outlook.com ([104.47.126.78]:1162 "EHLO APC01-PU1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751104AbeEOUKa (ORCPT ); Tue, 15 May 2018 16:10:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rKMUooUSYzOL4W1qJp6qS8PJUx+8UO1Rq24Az2BuzEc=; b=BGDpX5f7wwiYgyj9V9yvyvcBfro+9SXGJdGhS4dMzQ6HnKU2DPjey1aV57TugsaNmNkTFyrGt8er5Yel3pXl0jZxZrzytEwk/Ue3YtTvtAbMrylUy/Mf+0QsrEgDwj+F0q2urpuv1qa+pJL5w0X8nYWgCL7z4W9UjTG5KgLa3TM= Received: from KL1P15301MB0006.APCP153.PROD.OUTLOOK.COM (10.170.167.17) by KL1P15301MB0022.APCP153.PROD.OUTLOOK.COM (10.170.167.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.797.2; Tue, 15 May 2018 20:10:23 +0000 Received: from KL1P15301MB0006.APCP153.PROD.OUTLOOK.COM ([10.170.167.17]) by KL1P15301MB0006.APCP153.PROD.OUTLOOK.COM ([10.170.167.17]) with mapi id 15.20.0797.004; Tue, 15 May 2018 20:10:23 +0000 From: Dexuan Cui To: Linus Torvalds CC: Ingo Molnar , Alexey Dobriyan , Andrew Morton , Peter Zijlstra , Thomas Gleixner , Greg Kroah-Hartman , Rakib Mullick , Linux Kernel Mailing List Subject: RE: for_each_cpu() is buggy for UP kernel? Thread-Topic: for_each_cpu() is buggy for UP kernel? Thread-Index: AQHT6/knJa5WstrYJkq8AbGhuJkM9KQxCm6AgAAuagA= Date: Tue, 15 May 2018 20:10:22 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=True; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SiteId=72f988bf-86f1-41af-91ab-2d7cd011db47; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Owner=decui@microsoft.com; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SetDate=2018-05-15T20:10:19.9553643Z; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Name=General; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Application=Microsoft Azure Information Protection; MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Extended_MSFT_Method=Automatic; Sensitivity=General authentication-results: spf=none (sender IP is ) smtp.mailfrom=decui@microsoft.com; x-originating-ip: [131.107.147.147] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;KL1P15301MB0022;7:i2v8l3diggeKuNV1bdqq1FxBi20PNRVjNP9BHiCEKmtI2W6L1SW2nivaNGwLTxpg6d+c78U/rMM3n/gZ1dIL8tIDjz7/xJsl1EtZlA5IURBsOSfjFR2FgzzeV2COGsMseT4w1AmjxZ4wKM+GkxdTnZRbI2KM7CFxvoXyYjyQuBCWmK9O1UKpCnqC9nXc/0wEWwHIfq3mPgVsBvDsTXBdV/NWQORuYRv4JV6JN8j0EF6ddDpPEY2paV8Z1vW2jIts;20:Lcw3ptvfK6t9sSsGJpGIhgmAMiTux4qj0zX3RniA+MdWNSlo3B9+AdG3D/Nsg2H6z0Cd53e9vZyW4IVpBd7bKbE54TceOzik2ScOKLrjiuEtfoJ01vutiknJALY3MfodLgO5kPTnOpngLxROvRDV3EjYgC1w0N4ZWgXDvYgSxk8= x-ms-exchange-antispam-srfa-diagnostics: SOS; x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(2017052603328)(7193020);SRVR:KL1P15301MB0022; x-ms-traffictypediagnostic: KL1P15301MB0022: x-o365eop-header: O365_EOP: Allow for Unauthenticated Relay x-o365ent-eop-header: Message processed by - O365_ENT: Allow from ranges (Engineering ONLY) x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3002001)(10201501046)(3231254)(944501410)(52105095)(93006095)(93001095)(6055026)(149027)(150027)(6041310)(20161123560045)(20161123558120)(20161123564045)(20161123562045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(6072148)(201708071742011);SRVR:KL1P15301MB0022;BCL:0;PCL:0;RULEID:;SRVR:KL1P15301MB0022; x-forefront-prvs: 0673F5BE31 x-forefront-antispam-report: SFV:NSPM;SFS:(10009001)(6009001)(428001)(377454003)(164054003)(51704005)(24454002)(41574002)(199002)(189002)(20776003)(69226001)(63696002)(74876001)(74706001)(33656001)(76786001)(76796001)(81542001)(54356001)(93136001)(92566001)(46102001)(64706001)(81342001)(92726001)(15975445006)(77982001)(59766001)(56816005)(80022001)(66066001)(76482001)(90146001)(65816001)(87936001)(56776001)(54316002)(74366001)(44376005)(87266001)(2656002)(4396001)(47976001)(50986001)(95666003)(49866001)(47736001)(51856001)(85306002)(79102001)(85852003)(83072002)(21056001)(97336001)(94946001)(93516002)(95416001)(94316002)(86362001)(97186001)(80976001)(81686001)(83322001)(19580405001)(81816001)(86612001)(31966008)(74662001)(19580395003)(53806001)(74502001)(47446002);DIR:OUT;SFP:1101;SCL:1;SRVR:KL1P15301MB0022;H:KL1P15301MB0006.APCP153.PROD.OUTLOOK.COM;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: eycEeFUkkF/up26eo1qy/BD8vnTyKujXRltgHGE320Lzl3TZ04PUk618qDPjdSc4hNLzH67iSynI6SLgoLS72B2rt5u/5ygW00DpQgSKCefRgrXWym8eWzRWCRCkX5Jz70Tav+gCSwulR258v4g7nEN90TRk9d+oB5AnpA5Yk7gJRwgyssjpBQLl5X5zm1dU spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: aef3692b-2135-4c3d-b47b-08d5ba9fe414 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: aef3692b-2135-4c3d-b47b-08d5ba9fe414 X-MS-Exchange-CrossTenant-originalarrivaltime: 15 May 2018 20:10:22.7688 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: KL1P15301MB0022 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiBGcm9tOiBMaW51cyBUb3J2YWxkcyA8dG9ydmFsZHNAbGludXgtZm91bmRhdGlvbi5vcmc+DQo+ IFNlbnQ6IFR1ZXNkYXksIE1heSAxNSwgMjAxOCAxMDoyMg0KPiBUbzogRGV4dWFuIEN1aSA8ZGVj dWlAbWljcm9zb2Z0LmNvbT4NCj4gDQo+IE9uIE1vbiwgTWF5IDE0LCAyMDE4IGF0IDg6MDIgUE0g RGV4dWFuIEN1aSA8ZGVjdWlAbWljcm9zb2Z0LmNvbT4gd3JvdGU6DQo+IA0KPiA+IElmIHlvdSdy ZSBPSyB3aXRoIHRoZSBiZWxvdyBmaXggKG5vdCB0ZXN0ZWQgeWV0KSwgSSdsbCBzdWJtaXQgYSBw YXRjaCBmb3IgaXQ6DQo+IA0KPiA+IC0tLSBhL2tlcm5lbC90aW1lL3RpY2stYnJvYWRjYXN0LmMN Cj4gPiArKysgYi9rZXJuZWwvdGltZS90aWNrLWJyb2FkY2FzdC5jDQo+ID4gQEAgLTYxNiw2ICs2 MTYsMTAgQEAgc3RhdGljIHZvaWQgdGlja19oYW5kbGVfb25lc2hvdF9icm9hZGNhc3Qoc3RydWN0 DQo+IGNsb2NrX2V2ZW50X2RldmljZSAqZGV2KQ0KPiA+ICAgICAgICAgIG5vdyA9IGt0aW1lX2dl dCgpOw0KPiA+ICAgICAgICAgIC8qIEZpbmQgYWxsIGV4cGlyZWQgZXZlbnRzICovDQo+ID4gICAg ICAgICAgZm9yX2VhY2hfY3B1KGNwdSwgdGlja19icm9hZGNhc3Rfb25lc2hvdF9tYXNrKSB7DQo+ ID4gKyNpZm5kZWYgQ09ORklHX1NNUA0KPiA+ICsgICAgICAgICAgICAgICBpZiAoY3B1bWFza19l bXB0eSh0aWNrX2Jyb2FkY2FzdF9vbmVzaG90X21hc2spKQ0KPiA+ICsgICAgICAgICAgICAgICAg ICAgICAgIGJyZWFrOw0KPiA+ICsjZW5kaWYNCj4gDQo+IEknbSBjZXJ0YWlubHkgb2sgd2l0aCB0 aGlzLiBJdCdzIGhhY2t5LCBidXQgbWF5YmUgYmVpbmcgZXhwbGljaXRseSBoYWNreSBpcw0KPiBn b29kIHRvICJkb2N1bWVudCIgdGhpcyBnb3RjaGEuDQo+IA0KPiBBbmQgSSByZWFsbHkgZG8gYWdy ZWUgdGhhdCB0aGlzIHNwZWNpYWwgVVAgY2FzZSBpcyBuYXN0eSBuYXN0eSBhbmQgbXVjaCB0b28N Cj4gc3VidGxlLCBhbmQgSSBob3BlIHRoYXQgc29tZSBkYXkgd2Ugd29uJ3QgY2FyZSBhYm91dCBV UCBhdCBhbGwsIGFuZCBtYXliZQ0KPiBraWxsIGl0LCBvciBtYXliZSBqdXN0IG1ha2UgZm9yX2Vh Y2hfY3B1KCkgZ2VuZXJhdGUgdGhlIGV4dHJhIGNvZGUgdG8gaGF2ZQ0KPiB0aGUgYWN0dWFsIHNh bWUgc2VtYW50aWNzIGFzIHRoZSBTTVAgY2FzZS4NCj4gDQo+ICAgICAgICAgICAgICAgICAgIExp bnVzDQoNClRoYW5rcyEgSSBzdWJtaXR0ZWQgdGhlIHBhdGNoIGp1c3Qgbm93OiBodHRwczovL2xr bWwub3JnL2xrbWwvMjAxOC81LzE1Lzg2NiANCg0KVGhhbmtzLA0KLS0gRGV4dWFuDQo=