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_HELO_NONE,SPF_PASS 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 90B3AC43331 for ; Tue, 31 Mar 2020 00:41:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2B7A920748 for ; Tue, 31 Mar 2020 00:41:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2B7A920748 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=hpe.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A16106B0032; Mon, 30 Mar 2020 20:41:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9C6BE6B0037; Mon, 30 Mar 2020 20:41:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 88E116B006C; Mon, 30 Mar 2020 20:41:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0062.hostedemail.com [216.40.44.62]) by kanga.kvack.org (Postfix) with ESMTP id 6872F6B0032 for ; Mon, 30 Mar 2020 20:41:15 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 2809434A3 for ; Tue, 31 Mar 2020 00:41:15 +0000 (UTC) X-FDA: 76653803310.30.sand51_27e7d105d0512 X-HE-Tag: sand51_27e7d105d0512 X-Filterd-Recvd-Size: 11221 Received: from mx0b-002e3701.pphosted.com (mx0b-002e3701.pphosted.com [148.163.143.35]) by imf09.hostedemail.com (Postfix) with ESMTP for ; Tue, 31 Mar 2020 00:41:14 +0000 (UTC) Received: from pps.filterd (m0148664.ppops.net [127.0.0.1]) by mx0b-002e3701.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 02V0W1YX020678; Tue, 31 Mar 2020 00:41:00 GMT Received: from g2t2352.austin.hpe.com (g2t2352.austin.hpe.com [15.233.44.25]) by mx0b-002e3701.pphosted.com with ESMTP id 303mqw2h1k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 31 Mar 2020 00:41:00 +0000 Received: from G2W6311.americas.hpqcorp.net (g2w6311.austin.hp.com [16.197.64.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by g2t2352.austin.hpe.com (Postfix) with ESMTPS id 6D3EB91; Tue, 31 Mar 2020 00:40:59 +0000 (UTC) Received: from G4W9326.americas.hpqcorp.net (16.208.32.96) by G2W6311.americas.hpqcorp.net (16.197.64.53) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 31 Mar 2020 00:40:59 +0000 Received: from G4W10204.americas.hpqcorp.net (2002:10cf:5210::10cf:5210) by G4W9326.americas.hpqcorp.net (2002:10d0:2060::10d0:2060) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 31 Mar 2020 00:40:48 +0000 Received: from NAM12-MW2-obe.outbound.protection.outlook.com (15.241.52.13) by G4W10204.americas.hpqcorp.net (16.207.82.16) with Microsoft SMTP Server (TLS) id 15.0.1367.3 via Frontend Transport; Tue, 31 Mar 2020 00:40:48 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Zz+sbJJXsrSBe2unM6xcY5BtaB2T7N2SMvKyGIKCPXwBVJUHgifUWaI2w+lCUmerOXchUdJY9QShtoKy2HCPrYbqHqWJie/V5Gg8P6vMxZLOT2MEBVSjRHR/AW+mI+VATO8G+FGmNsEYvtPhBxwzHs5rnRjc8dO2lmXwAVPSAV5Yc+dkgpfVLPwQlGSKUAGARsNdrF/K9XZySl6Ug7ufKTkQ5LgO5OCECTrW+PWmjiVC87AcvcIAxFEPUWzGqed2E5y9B/K8gscneGfmn67ALnZ3Ed3eGXs19WKlVXbQzgOlb2+o80NN4jmBkDLglrTmVCOdlNcYppW7gc6ANw/DrQ== 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-SenderADCheck; bh=5Ftq7oR4ZJTzjerN6nl27wRqGjHiAIRfkXIJXfiZO0I=; b=nbJ5WtnptOFnckdsX4RK8+FmgiO6hfOlNIjciuUwYM2yMmhMMFhJSTPhta/d0HS6+dKwENz10nra7CyXavR6D6SnZdWsSNiATjQ53+0cQafqLmfbvzy9nXZ7AcYDz78uQySFDN83x+ylJsngh2kvkm45l48eBNXbqcQOgw85FpMDI7Y1op5qywUJpA+EZnIRS3o8RIGusm8fY3kBHUpYvMvv222W17jsnrRPOyrw/WzlX9CQAu/C1sjSQz2C1nKhk43JHot/RJiF1G4tlOxYyVS9QAp0+SaCGBJXD2XAmsli8UKpGLLOm9/W50LMg+MWF2BVmI0y3B13YHtcLHhw6g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=hpe.com; dmarc=pass action=none header.from=hpe.com; dkim=pass header.d=hpe.com; arc=none Received: from CS1PR8401MB1237.NAMPRD84.PROD.OUTLOOK.COM (2a01:111:e400:7514::15) by CS1PR8401MB1189.NAMPRD84.PROD.OUTLOOK.COM (2a01:111:e400:7513::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2856.18; Tue, 31 Mar 2020 00:40:46 +0000 Received: from CS1PR8401MB1237.NAMPRD84.PROD.OUTLOOK.COM ([fe80::6023:914f:6cca:4c98]) by CS1PR8401MB1237.NAMPRD84.PROD.OUTLOOK.COM ([fe80::6023:914f:6cca:4c98%7]) with mapi id 15.20.2856.019; Tue, 31 Mar 2020 00:40:46 +0000 From: "Elliott, Robert (Servers)" To: Arvind Sankar , "Kirill A. Shutemov" CC: Cannon Matthews , Matthew Wilcox , Andi Kleen , Michal Hocko , Mike Kravetz , Andrew Morton , David Rientjes , "Greg Thelen" , Salman Qazi , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "x86@kernel.org" Subject: RE: [PATCH] mm: clear 1G pages with streaming stores on x86 Thread-Topic: [PATCH] mm: clear 1G pages with streaming stores on x86 Thread-Index: AQHV9BxTUcdpkrKhkkWxKukJhgDyEqg/ZXUAgACWXQCAAG2HgIAAMeMAgAHykQCAAAlMgIAALQQAgABOS4CAAKxEgIAeQSIg Date: Tue, 31 Mar 2020 00:40:46 +0000 Message-ID: References: <20200307010353.172991-1-cannonmatthews@google.com> <20200309000820.f37opzmppm67g6et@box> <20200309090630.GC8447@dhcp22.suse.cz> <20200309153831.GK1454533@tassilo.jf.intel.com> <20200309183704.GA1573@bombadil.infradead.org> <20200311005447.jkpsaghrpk3c4rwu@box> <20200311033552.GA3657254@rani.riverdale.lan> <20200311081607.3ahlk4msosj4qjsj@box> <20200311183240.GA3880414@rani.riverdale.lan> In-Reply-To: <20200311183240.GA3880414@rani.riverdale.lan> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [73.206.28.217] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 81e2eedd-2f74-487e-15b8-08d7d50c271c x-ms-traffictypediagnostic: CS1PR8401MB1189: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:3513; x-forefront-prvs: 0359162B6D x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CS1PR8401MB1237.NAMPRD84.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFTY:;SFS:(10019020)(39860400002)(136003)(346002)(396003)(366004)(376002)(53546011)(6506007)(2906002)(55016002)(478600001)(81156014)(86362001)(33656002)(7696005)(5660300002)(81166006)(8676002)(7416002)(66446008)(54906003)(76116006)(64756008)(66556008)(110136005)(66476007)(52536014)(316002)(4326008)(66946007)(186003)(71200400001)(26005)(9686003)(8936002);DIR:OUT;SFP:1102; received-spf: None (protection.outlook.com: hpe.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: kc76ktQxy98BjqagdbCBKioIQqmEgU0lfFcM75aB0oksOIzCWkzdr6X+RV/yGtI5TaJoqjakKBLwPR71r5xZ0hq7XEUtPGUMMN/gzMIwaqCkXCAYEi1siN0HpkqkblSi4M5psqMeDk+N1BPyqABw06NX7nAjaO1frLSTT4aaTcP0UIiFTBhZ4CFIw1CxVx3jyJ4Dk3bFg2COgwhQ1f06OITTEMeoe0UR+4b4K46Hsh7cAzFRe7758PHsYBMOJjkcF99LlBrTUUgsQ0T6MI8RGaJrech6FZ7YDDBS4+o16ZU/q6/hUgSPNERmWyLoWXRCDtyMyfMS8+VhC9XWWRZR18d/R+BzUJ2aNOOQF42my6kejMou1lSMz92x/HA2QPBQaDqZ4s5WL+DRudn9vlMwE/OtCwHftJklfAee/D4Md6qqpcdNaZlGQUYx62XjcuMQ x-ms-exchange-antispam-messagedata: 6QZ0WupoOAXY1vKq761GV0nQMI+45nyb7IVMIbYAT65SqYDrYEwAgkf3im4LX3CnLIOGCtHbgcs7p3stzanKa1CHJm/DkDoSgb/chK8LiZ67fAATVboCqFEstRWAmD7LJDHEl+z2EnehjL0kyhfoQw== x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 81e2eedd-2f74-487e-15b8-08d7d50c271c X-MS-Exchange-CrossTenant-originalarrivaltime: 31 Mar 2020 00:40:46.7350 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 105b2061-b669-4b31-92ac-24d304d195dc X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: ZPWq09CbF4dyqR/g3SJvqZsYobr3AsdqGD5i6WotOJJ2TUnecXVdjsSDkdRrw6Qn X-MS-Exchange-Transport-CrossTenantHeadersStamped: CS1PR8401MB1189 X-OriginatorOrg: hpe.com X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.676 definitions=2020-03-30_07:2020-03-30,2020-03-30 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 adultscore=0 impostorscore=0 lowpriorityscore=0 mlxscore=0 malwarescore=0 suspectscore=0 clxscore=1011 mlxlogscore=798 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003310001 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogbGludXgta2VybmVsLW93 bmVyQHZnZXIua2VybmVsLm9yZyA8bGludXgta2VybmVsLQ0KPiBvd25lckB2Z2VyLmtlcm5lbC5v cmc+IE9uIEJlaGFsZiBPZiBBcnZpbmQgU2Fua2FyDQo+IFNlbnQ6IFdlZG5lc2RheSwgTWFyY2gg MTEsIDIwMjAgMTozMyBQTQ0KPiBUbzogS2lyaWxsIEEuIFNodXRlbW92IDxraXJpbGxAc2h1dGVt b3YubmFtZT4NCj4gQ2M6IEFydmluZCBTYW5rYXIgPG5pdmVkaXRhQGFsdW0ubWl0LmVkdT47IENh bm5vbiBNYXR0aGV3cw0KPiA8Y2Fubm9ubWF0dGhld3NAZ29vZ2xlLmNvbT47IE1hdHRoZXcgV2ls Y294IDx3aWxseUBpbmZyYWRlYWQub3JnPjsNCj4gQW5kaSBLbGVlbiA8YWtAbGludXguaW50ZWwu Y29tPjsgTWljaGFsIEhvY2tvIDxtaG9ja29Aa2VybmVsLm9yZz47DQo+IE1pa2UgS3JhdmV0eiA8 bWlrZS5rcmF2ZXR6QG9yYWNsZS5jb20+OyBBbmRyZXcgTW9ydG9uIDxha3BtQGxpbnV4LQ0KPiBm b3VuZGF0aW9uLm9yZz47IERhdmlkIFJpZW50amVzIDxyaWVudGplc0Bnb29nbGUuY29tPjsgR3Jl ZyBUaGVsZW4NCj4gPGd0aGVsZW5AZ29vZ2xlLmNvbT47IFNhbG1hbiBRYXppIDxzcWF6aUBnb29n bGUuY29tPjsgbGludXgtDQo+IG1tQGt2YWNrLm9yZzsgbGludXgta2VybmVsQHZnZXIua2VybmVs Lm9yZzsgeDg2QGtlcm5lbC5vcmcNCj4gU3ViamVjdDogUmU6IFtQQVRDSF0gbW06IGNsZWFyIDFH IHBhZ2VzIHdpdGggc3RyZWFtaW5nIHN0b3JlcyBvbiB4ODYNCj4gDQo+IE9uIFdlZCwgTWFyIDEx LCAyMDIwIGF0IDExOjE2OjA3QU0gKzAzMDAsIEtpcmlsbCBBLiBTaHV0ZW1vdiB3cm90ZToNCj4g PiBPbiBUdWUsIE1hciAxMCwgMjAyMCBhdCAxMTozNTo1NFBNIC0wNDAwLCBBcnZpbmQgU2Fua2Fy IHdyb3RlOg0KPiA+ID4NCj4gPiA+IFRoZSByYXRpb25hbGUgZm9yIE1PVk5USSBpbnN0cnVjdGlv biBpcyBzdXBwb3NlZCB0byBiZSB0aGF0IGl0DQo+IGF2b2lkcw0KPiA+ID4gY2FjaGUgcG9sbHV0 aW9uLiBBc2lkZSBmcm9tIHRoZSBiZW5jaCB0aGF0IHNob3dzIE1PVk5USSB0byBiZQ0KPiBmYXN0 ZXIgZm9yDQo+ID4gPiB0aGUgbW92ZSBpdHNlbGYsIHNob3VsZG4ndCBpdCBoYXZlIGFuIGFkZGl0 aW9uYWwgYmVuZWZpdCBpbiBub3QNCj4gdHJhc2hpbmcNCj4gPiA+IHRoZSBDUFUgY2FjaGVzPw0K PiA+ID4NCj4gPiA+IEFzIHN0cmluZyBpbnN0cnVjdGlvbnMgaW1wcm92ZSwgd2h5IHdvdWxkbid0 IHRoZSBzYW1lDQo+IGltcHJvdmVtZW50cyBiZQ0KPiA+ID4gYXBwbGllZCB0byBNT1ZOVEk/DQo+ ID4NCj4gPiBTdHJpbmcgaW5zdHJ1Y3Rpb25zIGluaGVyZW50bHkgbW9yZSBmbGV4aWJsZS4gSW1w bGVtZW50YXRpb24gY2FuDQo+IGNob29zZQ0KPiA+IGNhY2hpbmcgc3RyYXRlZ3kgZGVwZW5kaW5n IG9uIHRoZSBvcGVyYXRpb24gc2l6ZSAoY3gpIGFuZCBvdGhlcg0KPiBmYWN0b3JzLg0KPiA+IExp a2UgaWYgb3BlcmF0aW9uIGlzIGxhcmdlIGVub3VnaCBhbmQgY2FjaGUgaXMgZnVsbCBvZiBkaXJ0 eSBjYWNoZQ0KPiBsaW5lcw0KPiA+IHRoYXQgZXhwZW5zaXZlIHRvIGZyZWUgdXAsIGl0IGNhbiBj aG9vc2UgdG8gYnlwYXNzIGNhY2hlLiBNT1ZOVEkgaXMNCj4gbW9yZQ0KPiA+IHN0cmljdCBvbiBz ZW1hbnRpY3MgYW5kIG1vcmUgb3BhcXVlIHRvIENQVS4NCj4gDQo+IEJ1dCB3aXRoIHRvZGF5J3Mg cHJvY2Vzc29ycywgd291bGRuJ3Qgd3JpdGluZyAxRyB2aWEgdGhlIHN0cmluZw0KPiBvcGVyYXRp b25zIGVtcHR5IG91dCBhbG1vc3QgdGhlIHdob2xlIGNhY2hlPyBPciBhcmUgdGhlcmUgYWxyZWFk eQ0KPiBvcHRpbWl6YXRpb25zIHRvIHByZXZlbnQgb25lIHRocmVhZCBmcm9tIGhvZ2dpbmcgdGhl IEwzPw0KPiANCj4gSWYgd2UgZG8gd2FudCB0byBqdXN0IHVzZSB0aGUgc3RyaW5nIG9wZXJhdGlv bnMsIGl0IHNlZW1zIGxpa2UgdGhlDQo+IGNsZWFyX3BhZ2Ugcm91dGluZXMgc2hvdWxkIGp1c3Qg Y2FsbCBtZW1zZXQgaW5zdGVhZCBvZiBkdXBsaWNhdGluZw0KPiBpdC4NCj4gDQoNClRoZSBsYXN0 IHRpbWUgSSBjaGVja2VkLCBnbGliYyBtZW1jcHkoKSBjaG9zZSBub24tdGVtcG9yYWwgc3RvcmVz IGJhc2VkDQpvbiB0cmFuc2ZlciBzaXplLCBMMyBjYWNoZSBzaXplLCBhbmQgdGhlIG51bWJlciBv ZiBjb3Jlcy4NCkZvciBleGFtcGxlLCB3aXRoIGdsaWJjLTIuMjE2LTE2LmZjMjcgKEF1Z3VzdCAy MDE3KSwgb24gYSBCcm9hZHdlbGwNCnN5c3RlbSB3aXRoIEU1LTI2OTkgMzYgY29yZXMgNDUgTWlC IEwzIGNhY2hlLCBub24tdGVtcG9yYWwgc3RvcmVzIG9ubHkNCnN0YXJ0IHRvIGJlIHVzZWQgYWJv dmUgMzYgTWlCLg0KDQoNCg==