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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 870EAC433C1 for ; Tue, 23 Mar 2021 19:52:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D9CAE619C1 for ; Tue, 23 Mar 2021 19:52:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9CAE619C1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 709E56B00E6; Tue, 23 Mar 2021 15:52:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6B9D06B00E8; Tue, 23 Mar 2021 15:52:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4BE6C6B00F0; Tue, 23 Mar 2021 15:52:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0049.hostedemail.com [216.40.44.49]) by kanga.kvack.org (Postfix) with ESMTP id 2C2536B00E6 for ; Tue, 23 Mar 2021 15:52:19 -0400 (EDT) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id E62F487DA for ; Tue, 23 Mar 2021 19:52:18 +0000 (UTC) X-FDA: 77952185556.09.AA738AD Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by imf30.hostedemail.com (Postfix) with ESMTP id 4CF65E000214 for ; Tue, 23 Mar 2021 19:52:15 +0000 (UTC) IronPort-SDR: tUD2vMeclsmlPCktsrh80AvZUDgAQcIcAHG0KjwHqt+qBnLgLmIGK9yn6XxbnCARc+KgiRblK1 l2lr5H+CaJrg== X-IronPort-AV: E=McAfee;i="6000,8403,9932"; a="187237833" X-IronPort-AV: E=Sophos;i="5.81,272,1610438400"; d="scan'208";a="187237833" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Mar 2021 12:52:15 -0700 IronPort-SDR: pY+OtfI9GaGhQGP+UKg9LF6ebyNQturOW6YZp0ZSBoCe4PgsMYOk8VFibZF8zrWKOC6d1uCImN BGfc1IvqtXaA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,272,1610438400"; d="scan'208";a="441847339" Received: from orsmsx601.amr.corp.intel.com ([10.22.229.14]) by fmsmga002.fm.intel.com with ESMTP; 23 Mar 2021 12:52:15 -0700 Received: from orsmsx610.amr.corp.intel.com (10.22.229.23) by ORSMSX601.amr.corp.intel.com (10.22.229.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Tue, 23 Mar 2021 12:52:14 -0700 Received: from orsmsx603.amr.corp.intel.com (10.22.229.16) by ORSMSX610.amr.corp.intel.com (10.22.229.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Tue, 23 Mar 2021 12:52:14 -0700 Received: from ORSEDG601.ED.cps.intel.com (10.7.248.6) by orsmsx603.amr.corp.intel.com (10.22.229.16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2 via Frontend Transport; Tue, 23 Mar 2021 12:52:14 -0700 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (104.47.56.177) by edgegateway.intel.com (134.134.137.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2106.2; Tue, 23 Mar 2021 12:52:14 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=R0Kz0scB3Cv2FlZlKqFc5TiLO5VC+2dqkH/vMPHhTacHwUh7cjgy+4/mkhQ5nEa6WIN680tFII3bEZTl1/WiVZt4bpnmNQDkzqMT75A1LoGz7BynD2rqIaWReee3BG5z6KrFQ1oa0yET/sD3Lo9iI2syGxjaRbiV60PuyD/CM7ZC9wwSzsJerc/NL18pvY+sd8EEEKeCD4d7Kr7ASBEzH9A4HceD4VDzUwgHoe5qRwuYLV7qy6FsMFNHMpmL5FnniPHFEFSM5AniIMN333b9McQy3+I3pZFvDbJXMk1PWOz3j/gGbepEirnJ8y808UaepeyCXrYZHyUAjZJbj8divQ== 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=xIfK/4RB7W88XETeDDhdZFk6tmViEcre/Ix6pS7VzBs=; b=AQtj44JN4njwwKxUYe9YCTICnKnb4hqRXKjpR0rrALIVeX06k6uR+bZSIhMe4nGYJU259FNyZZCM33/IRasTlAg1kzRfkcx1fO36FPmVNFw2n9x7fpTxdAN/6p4XWfxVrBqRhY61+mAP0w0B3yfmMKiExjaI/1MHa6XtsPfmb2Qqw5QjNb3W+LvNfqWizSu+TQ07NpZ16NQRP23QQxZdTijBYbtOVhLjC5223h8wKeoXr4fPz6Rlpwf/aBFPCp7+AvGN/2K9PQyZZhEzipo5+Zbi8I2DW8VdzCTMOlYqRZs1arvpdFI7xMiqIt9o09Is0WLWb2iSsXa8vylIpxdpZQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel.onmicrosoft.com; s=selector2-intel-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=xIfK/4RB7W88XETeDDhdZFk6tmViEcre/Ix6pS7VzBs=; b=cMF0h5Runv4v16TRTh0Dc10Y1OBRdCPyIsB0VdThwg/a3wmYCm5NFaPl7e3t0PhXCZqclKQKkAfbrLb4RWBT0Bgci1ys3UQGhRDAiOBVdAA5paHnnsWkNs4TigWVOquv+H8vRnF7FcT1i95QeEIL2t545uaOu011lSP0tfqmE5Y= Received: from SJ0PR11MB5150.namprd11.prod.outlook.com (2603:10b6:a03:2d4::18) by SJ0PR11MB4957.namprd11.prod.outlook.com (2603:10b6:a03:2df::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3955.18; Tue, 23 Mar 2021 19:52:13 +0000 Received: from SJ0PR11MB5150.namprd11.prod.outlook.com ([fe80::5127:2366:9745:85d8]) by SJ0PR11MB5150.namprd11.prod.outlook.com ([fe80::5127:2366:9745:85d8%7]) with mapi id 15.20.3955.027; Tue, 23 Mar 2021 19:52:13 +0000 From: "Williams, Dan J" To: "dri-devel@lists.freedesktop.org" , "thomas_os@shipmail.org" CC: "daniel@ffwll.ch" , "christian.koenig@amd.com" , "jgg@nvidia.com" , "airlied@linux.ie" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" Subject: Re: [RFC PATCH 1/2] mm,drm/ttm: Block fast GUP to TTM huge pages Thread-Topic: [RFC PATCH 1/2] mm,drm/ttm: Block fast GUP to TTM huge pages Thread-Index: AQHXIB4E/VTXwsCvu0+B1J8xJxNM8A== Date: Tue, 23 Mar 2021 19:52:13 +0000 Message-ID: References: <20210321184529.59006-1-thomas_os@shipmail.org> <20210321184529.59006-2-thomas_os@shipmail.org> In-Reply-To: <20210321184529.59006-2-thomas_os@shipmail.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Evolution 3.36.5 (3.36.5-2.fc32) authentication-results: lists.freedesktop.org; dkim=none (message not signed) header.d=none;lists.freedesktop.org; dmarc=none action=none header.from=intel.com; x-originating-ip: [134.134.136.199] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c8527236-b9ce-42e8-eb94-08d8ee352769 x-ms-traffictypediagnostic: SJ0PR11MB4957: x-ld-processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr,ExtFwd x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SJ0PR11MB5150.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(136003)(366004)(396003)(346002)(376002)(39860400002)(66946007)(66446008)(7416002)(71200400001)(2616005)(66476007)(54906003)(6512007)(4326008)(26005)(6506007)(86362001)(186003)(316002)(6486002)(8676002)(66556008)(76116006)(8936002)(64756008)(110136005)(478600001)(5660300002)(83380400001)(36756003)(66574015)(966005)(2906002)(38100700001)(14583001);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata: =?utf-8?B?NjFNbTdYVUNFcE1aL1NZcWtDM1EyVE1ObFVMRlZNV3Rra2xjcUxuZmVMMXZB?= =?utf-8?B?Qm1KSi9sZlQ1eVFGYkhOR0Vmam9PQU15ejFnbHN1bG5JMVNRdEVQZk54Qi9j?= =?utf-8?B?OVhjdEJEcWdMc0lLMmMzMGRVMnEycG1nRFdYeGtRUUMyelo5R0pKQ1ZGRWNt?= =?utf-8?B?eHJXNUZEQkFFMkhCOHFCRGE1dDBOZmdnSEVGOVF3Q0o2c0w5TDZTSUlGMkJS?= =?utf-8?B?cDhwSGZNVnVGR0xpMUl1OW0vdG1yWDBxc1JpVy83QTNtWC9BY3hNckhaQzIy?= =?utf-8?B?bWkwTkxBUnZqcjA3OFN0RU4za1poMTI1R1FsLy9hbldVbGZvWTBOa2hnaU56?= =?utf-8?B?MXZaVk1vckpvTHRuN3Z4Tmlwdm1lbEJ1UmM0QXdodldadEYyRGZyNXNMUlR2?= =?utf-8?B?Wms1enp2V3hBTFVYWEV4OStZZTBvUW5UUlZjYW94cEM0cS9lWUZkTXpqdkJP?= =?utf-8?B?VkdjTllNY0QzTzFVS3k1S3VlR1pLSURvdEJDNmJYSVFYbWhKL1pBWjNKelZE?= =?utf-8?B?a1ZKSFdpRExjSVBjL3pPUnZRMG5QZlovOFl2Wjl4S245MmNSekJpRG9VaDNx?= =?utf-8?B?SHFKbTcwWFNta29BNFk3UTZ4U0JKd3JTSjg2YWN5NnFGNnNBeUVPSzR1cERB?= =?utf-8?B?SG0ycVJaeXNxSkNxUGxLamM3OE13NTYzZlFuVi83VVllNDVhdFV3S05LZzZF?= =?utf-8?B?TitxaDlTTmtNWVExRDBRczRtVytxZUttY0xHYmRod1M3WlZJWlJjN2RiTmxj?= =?utf-8?B?VkVOaWwwQk9SamxNYU1DOU8vb3dEbm5BUm9seEN0MERWbFEyQUc3U2x4NEVN?= =?utf-8?B?OE1GRnRiRDJaS2tlQUZ1MEQ5d3V6dDY5SnZ6eFBMVzg1d3lKUEFuR09hU2ho?= =?utf-8?B?ZHp4V0hpZnNrSTM2azkvRElpWElhTXZJS0RKQ1lpLzhsRk5pTE1udk9rQ1FJ?= =?utf-8?B?YnJIVkJ2UHd1TnRlUzlRMHl2Nk1teWMyRnE5MGlOcTdqYlRQK1dkSjhhTEEw?= =?utf-8?B?YVRpVkx0N0tsbHZJS2lrQnN0STFTS245TzdrTWVkL1UwR0VkbkNNY3NuNEts?= =?utf-8?B?eThtQjFjSzlWTmIvMmNsejg5Si9pVGR0OEdCR0RScXFkUndnem95bUUrUk5X?= =?utf-8?B?M2RpMW9UN29IYk5Mdmk0OHU2QzFyaFVoMFhIeGJtdmN6bXpqa2UrVklvc0RU?= =?utf-8?B?NnVMZjRGd3FKTEl4MEJyenViYXQzZFZCdkhmekoySVNENFFHaEw2N01odDh6?= =?utf-8?B?cGVGUEhjUVBkeSs2cE05blRyaE1SdjhCdzBGU1Vkek9YS3JybTBMYW0yM09Z?= =?utf-8?B?ZkdwdlBLT2psd3A1SDRidzZVTGp4dnlNZG9xaGhCZFFiUTVsT1oyRWJ4Sjlz?= =?utf-8?B?Z1RvWXhQZkRrMFVVVWhVbWs3K2t5SFlBamxSUUloZGRrd0FIS1U4NGg1MUY4?= =?utf-8?B?TDY2S3VLTWVtUlFZVFNadGppS1lPRzdIOXBCWXdPUXpablFwb0JxRURWWENH?= =?utf-8?B?Uy80QkF4MEZkUkMzK3ZSMjZGL05jbnlISzZTRjY3WUorTUdkZFlXTm9nZXFl?= =?utf-8?B?c092QkpLaE9KRDh4b3Zhai9FSDJwMFhFa01FdXhtOExMRVloRTl5VVBmQnZM?= =?utf-8?B?SHNUWGJwdlhTeElra0F6aVMweHdyZSt6OUtGM01nK01TYVEzbHVFOVRydkk0?= =?utf-8?B?MHJVQnZ4QnY5UGFZQ0VXWlF6MW14cU52MEtTYisrVDcxQ1RENnd3c1hDamlS?= =?utf-8?Q?IwHEgHWwBxX8/0pQlvvlM3MApH2yKZjtDfjhn9+?= Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SJ0PR11MB5150.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: c8527236-b9ce-42e8-eb94-08d8ee352769 X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Mar 2021 19:52:13.3172 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: sLZgTc+1Nvwa0LGTlp960hkUexriy9yLo4l4CoNQ//+AT0ImgXoXGYjSCnE1Q/73RKdEofB9vBC7AhkHRybwGLiU8w7cDqZcO5a2D/U6NN0= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR11MB4957 X-OriginatorOrg: intel.com X-Stat-Signature: n7rq5m8guhnm7db5bjedp3uqo6qfnwsh X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 4CF65E000214 Received-SPF: none (intel.com>: No applicable sender policy available) receiver=imf30; identity=mailfrom; envelope-from=""; helo=mga11.intel.com; client-ip=192.55.52.93 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1616529135-890835 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: T24gU3VuLCAyMDIxLTAzLTIxIGF0IDE5OjQ1ICswMTAwLCBUaG9tYXMgSGVsbHN0csO2bSAoSW50 ZWwpIHdyb3RlOg0KPiBUVE0gc2V0cyB1cCBodWdlIHBhZ2UtdGFibGUtZW50cmllcyBib3RoIHRv IHN5c3RlbS0gYW5kIGRldmljZQ0KPiBtZW1vcnksDQo+IGFuZCB3ZSBkb24ndCB3YW50IGd1cCB0 byBhc3N1bWUgdGhlcmUgYXJlIGFsd2F5cyB2YWxpZCBiYWNraW5nIHN0cnVjdA0KPiBwYWdlcyBm b3IgdGhlc2UuIEZvciBQVEVzIHRoaXMgaXMgaGFuZGxlZCBieSBzZXR0aW5nIHRoZSBwdGVfc3Bl Y2lhbA0KPiBiaXQsDQo+IGJ1dCBmb3IgdGhlIGh1Z2UgUFVEcyBhbmQgUE1Ecywgd2UgaGF2ZSBu ZWl0aGVyIHBtZF9zcGVjaWFsIG5vcg0KPiBwdWRfc3BlY2lhbC4gTm9ybWFsbHksIGh1Z2UgVFRN IGVudHJpZXMgYXJlIGlkZW50aWZpZWQgYnkgbG9va2luZyBhdA0KPiB2bWFfaXNfc3BlY2lhbF9o dWdlKCksIGJ1dCBmYXN0IGd1cCBjYW4ndCBkbyB0aGF0LCBzbyBhcyBhbg0KPiBhbHRlcm5hdGl2 ZQ0KPiBkZWZpbmUgX2Rldm1hcCBlbnRyaWVzIGZvciB3aGljaCB0aGVyZSBhcmUgbm8gYmFja2lu ZyBkZXZfcGFnZW1hcCBhcw0KPiBzcGVjaWFsLCB1cGRhdGUgZG9jdW1lbnRhdGlvbiBhbmQgbWFr ZSBodWdlIFRUTSBlbnRyaWVzIF9kZXZtYXAsDQo+IGFmdGVyDQo+IHZlcmlmeWluZyB0aGF0IHRo ZXJlIGlzIG5vIGJhY2tpbmcgZGV2X3BhZ2VtYXAuDQoNClBsZWFzZSBkbyBub3QgYWJ1c2UgcHtt LHV9ZF9kZXZtYXAgbGlrZSB0aGlzLiBJJ20gaW4gdGhlIHByb2Nlc3Mgb2YNCnJlbW92aW5nIGdl dF9kZXZwYWdlbWFwKCkgZnJvbSB0aGUgZ3VwLWZhc3QgcGF0aCBbMV0uIEluc3RlYWQgdGhlcmUN CnNob3VsZCBiZSBzcGFjZSBmb3IgcHttLHV9ZF9zcGVjaWFsIGluIHRoZSBwYWdlIHRhYmxlIGVu dHJpZXMgKGF0IGxlYXN0DQpmb3IgeDg2LTY0KS4gU28gdGhlIGZpeCBpcyB0byByZW1vdmUgdGhh dCBvbGQgYXNzdW1wdGlvbiB0aGF0IGh1Z2UNCnBhZ2VzIGNhbiBuZXZlciBiZSBzcGVjaWFsLg0K DQpbMV06IA0KaHR0cDovL2xvcmUua2VybmVsLm9yZy9yLzE2MTYwNDA1MDg2Ni4xNDYzNzQyLjc3 NTk1MjE1MTAzODM1NTEwNTUuc3RnaXRAZHdpbGxpYTItZGVzazMuYW1yLmNvcnAuaW50ZWwuY29t DQoNCg==