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=-8.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 BC972C5B57D for ; Wed, 3 Jul 2019 00:28:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7D15821993 for ; Wed, 3 Jul 2019 00:28:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amdcloud.onmicrosoft.com header.i=@amdcloud.onmicrosoft.com header.b="I2VmR7Ga" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727237AbfGCA2i (ORCPT ); Tue, 2 Jul 2019 20:28:38 -0400 Received: from mail-eopbgr800084.outbound.protection.outlook.com ([40.107.80.84]:26748 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727164AbfGCA2h (ORCPT ); Tue, 2 Jul 2019 20:28:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector1-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bXV5m5/kWL0UTx0rffDnbnfr99W18VuHp36gZ6xXldk=; b=I2VmR7GaVUgrTx3BAhLw9gTSGN99h0fegBzuNaGRakfcNLzWWMVvDPwiH25Ed6kRRZWK7jwJ+Wkc4HAEgy8qCeSHo1hnjGfVCHF47S6AH5knIs8Ze4jaK4tAhax64gSold0HYRVowbsRYACwaMYkwtOCo1sS+MjODN0yChOyxGE= Received: from DM6PR12MB3947.namprd12.prod.outlook.com (10.255.174.156) by DM6PR12MB3227.namprd12.prod.outlook.com (20.179.105.95) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2032.20; Tue, 2 Jul 2019 21:43:58 +0000 Received: from DM6PR12MB3947.namprd12.prod.outlook.com ([fe80::91a2:f9e7:8c86:f927]) by DM6PR12MB3947.namprd12.prod.outlook.com ([fe80::91a2:f9e7:8c86:f927%7]) with mapi id 15.20.2032.019; Tue, 2 Jul 2019 21:43:58 +0000 From: "Kuehling, Felix" To: Christoph Hellwig , Dan Williams , =?utf-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Jason Gunthorpe , Ben Skeggs , "Yang, Philip" CC: Ira Weiny , "linux-mm@kvack.org" , "nouveau@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" , "linux-nvdimm@lists.01.org" , "linux-pci@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 19/22] mm: always return EBUSY for invalid ranges in hmm_range_{fault,snapshot} Thread-Topic: [PATCH 19/22] mm: always return EBUSY for invalid ranges in hmm_range_{fault,snapshot} Thread-Index: AQHVL9U3BN0CaVdL806tAThCwvVuZKa33tOA Date: Tue, 2 Jul 2019 21:43:58 +0000 Message-ID: References: <20190701062020.19239-1-hch@lst.de> <20190701062020.19239-20-hch@lst.de> In-Reply-To: <20190701062020.19239-20-hch@lst.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [165.204.55.251] user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 x-clientproxiedby: YTOPR0101CA0031.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b00:15::44) To DM6PR12MB3947.namprd12.prod.outlook.com (2603:10b6:5:1cb::28) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Felix.Kuehling@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 13f473c3-5730-48c1-f95f-08d6ff366354 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020);SRVR:DM6PR12MB3227; x-ms-traffictypediagnostic: DM6PR12MB3227: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 008663486A x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(366004)(39860400002)(346002)(396003)(136003)(376002)(189003)(199004)(6116002)(3846002)(68736007)(476003)(2616005)(486006)(6486002)(36756003)(72206003)(478600001)(66066001)(64126003)(64756008)(66446008)(66946007)(66476007)(73956011)(14444005)(256004)(66556008)(8676002)(65956001)(65806001)(102836004)(86362001)(71200400001)(53936002)(229853002)(8936002)(110136005)(316002)(6436002)(6506007)(81166006)(5660300002)(53546011)(31696002)(65826007)(58126008)(305945005)(186003)(71190400001)(54906003)(7416002)(386003)(14454004)(6512007)(99286004)(7736002)(11346002)(4326008)(25786009)(6636002)(2906002)(76176011)(31686004)(52116002)(446003)(26005)(81156014)(6246003)(142933001);DIR:OUT;SFP:1101;SCL:1;SRVR:DM6PR12MB3227;H:DM6PR12MB3947.namprd12.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: sMk9L56Wb8xff3fa0UYNwsl9h+hrIYZNmWjZ2sZDOyWhgc5H+orKgzntdXV+43yWl4Lr3U4nKoyq+847Jyb1LO7jtF/utnCV/yhFNbUpoClgimWeyEW1AfwIxb1AbfTDFJ81dfCLN7d1C6JKhszrqEz69czVaywl62W2iiv2ZsBx1M78T3Kk8/Q3H8WtxPPbof/9Ll5wm58jel7AN2JeO8FBGM7JoD3HVlg6nqebp3T6ukDzHKWAKGVT7ItJfD/8XTkhqmPwRzGOd7AxvfYipQ9hPwAzZfdrFp7OCGSLNKDF/CC9Kp+yDd6w1rGGvYppl2NucncmXRzCmiFh9ivHN47pfj9UgYWZNbJcnc6XVH1bOnlXWAqOSDvoSm9qrF0zVD8TRE8BtixlMseu5AYRmAhTf7vXX2h43mFy4AgGm1c= Content-Type: text/plain; charset="utf-8" Content-ID: <30B65ABE32E43E43B44DF7426B589C07@namprd12.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 13f473c3-5730-48c1-f95f-08d6ff366354 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Jul 2019 21:43:58.3251 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: fkuehlin@amd.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3227 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org T24gMjAxOS0wNy0wMSAyOjIwIGEubS4sIENocmlzdG9waCBIZWxsd2lnIHdyb3RlOg0KPiBXZSBz aG91bGQgbm90IGhhdmUgdHdvIGRpZmZlcmVudCBlcnJvciBjb2RlcyBmb3IgdGhlIHNhbWUgY29u ZGl0aW9uLiAgSW4NCj4gYWRkaXRpb24gdGhpcyByZWFsbHkgY29tcGxpY2F0ZXMgdGhlIGNvZGUg ZHVlIHRvIHRoZSBzcGVjaWFsIGhhbmRsaW5nIG9mDQo+IEVBR0FJTiB0aGF0IGRyb3BzIHRoZSBt bWFwX3NlbSBkdWUgdG8gdGhlIEZBVUxUX0ZMQUdfQUxMT1dfUkVUUlkgbG9naWMNCj4gaW4gdGhl IGNvcmUgdm0uDQoNCkkgdGhpbmsgdGhlIGNvbW1lbnQgYWJvdmUgaG1tX3JhbmdlX3NuYXBzaG90 IG5lZWRzIGFuIHVwZGF0ZS4gQWxzbyANCkRvY3VtZW50YXRpb24vdm0vaG1tLnJzdCBzaG93cyBz b21lIGV4YW1wbGUgY29kZSB1c2luZyANCmhtbV9yYW5nZV9zbmFwc2hvdCB0aGF0IHJldHJpZXMg b24gLUVBR0FJTi4gVGhhdCB3b3VsZCBuZWVkIHRvIGJlIA0KdXBkYXRlZCB0byB1c2UgLUVCVVNZ IG9yIHJlbW92ZSB0aGUgcmV0cnkgbG9naWMgYWx0b2dldGhlci4NCg0KT3RoZXIgdGhhbiB0aGF0 LCB0aGlzIHBhdGNoIGlzIFJldmlld2VkLWJ5OiBGZWxpeCBLdWVobGluZyANCjxGZWxpeC5LdWVo bGluZ0BhbWQuY29tPg0KDQpQaGlsaXAsIHRoaXMgbWVhbnMgd2Ugc2hvdWxkIHJlbW92ZSBvdXIg cmV0cnkgbG9naWMgYWdhaW4gaW4gDQphbWRncHVfdHRtX3R0X2dldF91c2VyX3BhZ2VzLiBBY2Nv cmRpbmcgdG8gdGhlIGNvbW1lbnQgYWJvdmUgDQpobW1fcmFuZ2VfZmF1bHQsIGl0IGNhbiBvbmx5 IHJldHVybiAtRUFHQUlOIGlmIHRoZSBibG9jayBwYXJhbWV0ZXIgaXMgDQpmYWxzZS4gSSB0aGlu ayB0aGlzIHN0YXRlbWVudCBpcyBub3cgYWN0dWFsbHkgdHJ1ZS4gV2Ugc2V0IGJsb2NrPXRydWUs IA0Kc28gd2UgY2FuJ3QgZ2V0IC1FQUdBSU4uIE9uIC1FQlVTWSB3ZSBjYW4gbGV0IA0KYW1kZ3B1 X2FtZGtmZF9yZXN0b3JlX3VzZXJwdHJfd29ya2VyIHNjaGVkdWxlIHRoZSByZXRyeSAod2hpY2gg aXQgZG9lcyANCmFscmVhZHkgYW55d2F5KS4NCg0KUmVnYXJkcywNCiDCoCBGZWxpeA0KDQoNCj4N Cj4gU2lnbmVkLW9mZi1ieTogQ2hyaXN0b3BoIEhlbGx3aWcgPGhjaEBsc3QuZGU+DQo+IC0tLQ0K PiAgIG1tL2htbS5jIHwgOCArKystLS0tLQ0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAzIGluc2VydGlv bnMoKyksIDUgZGVsZXRpb25zKC0pDQo+DQo+IGRpZmYgLS1naXQgYS9tbS9obW0uYyBiL21tL2ht bS5jDQo+IGluZGV4IGM4NWVkN2Q0ZTJjZS4uZDEyNWRmNjk4ZTJiIDEwMDY0NA0KPiAtLS0gYS9t bS9obW0uYw0KPiArKysgYi9tbS9obW0uYw0KPiBAQCAtOTc0LDcgKzk3NCw3IEBAIGxvbmcgaG1t X3JhbmdlX3NuYXBzaG90KHN0cnVjdCBobW1fcmFuZ2UgKnJhbmdlKQ0KPiAgIAlkbyB7DQo+ICAg CQkvKiBJZiByYW5nZSBpcyBubyBsb25nZXIgdmFsaWQgZm9yY2UgcmV0cnkuICovDQo+ICAgCQlp ZiAoIXJhbmdlLT52YWxpZCkNCj4gLQkJCXJldHVybiAtRUFHQUlOOw0KPiArCQkJcmV0dXJuIC1F QlVTWTsNCj4gICANCj4gICAJCXZtYSA9IGZpbmRfdm1hKGhtbS0+bW0sIHN0YXJ0KTsNCj4gICAJ CWlmICh2bWEgPT0gTlVMTCB8fCAodm1hLT52bV9mbGFncyAmIGRldmljZV92bWEpKQ0KPiBAQCAt MTA2OSwxMCArMTA2OSw4IEBAIGxvbmcgaG1tX3JhbmdlX2ZhdWx0KHN0cnVjdCBobW1fcmFuZ2Ug KnJhbmdlLCBib29sIGJsb2NrKQ0KPiAgIA0KPiAgIAlkbyB7DQo+ICAgCQkvKiBJZiByYW5nZSBp cyBubyBsb25nZXIgdmFsaWQgZm9yY2UgcmV0cnkuICovDQo+IC0JCWlmICghcmFuZ2UtPnZhbGlk KSB7DQo+IC0JCQl1cF9yZWFkKCZobW0tPm1tLT5tbWFwX3NlbSk7DQo+IC0JCQlyZXR1cm4gLUVB R0FJTjsNCj4gLQkJfQ0KPiArCQlpZiAoIXJhbmdlLT52YWxpZCkNCj4gKwkJCXJldHVybiAtRUJV U1k7DQo+ICAgDQo+ICAgCQl2bWEgPSBmaW5kX3ZtYShobW0tPm1tLCBzdGFydCk7DQo+ICAgCQlp ZiAodm1hID09IE5VTEwgfHwgKHZtYS0+dm1fZmxhZ3MgJiBkZXZpY2Vfdm1hKSkNCg==