Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   =?utf-8?B?WGlhb21pbmcgRGluZyAo5LiB5pmT5piOKQ==?= 
        <Xiaoming.Ding@mediatek.com>
To:     "hch@infradead.org" <hch@infradead.org>,
        "sumit.garg@linaro.org" <sumit.garg@linaro.org>
CC:     =?utf-8?B?RmVpIFh1ICjlvpDpo54p?= <Fei.Xu@mediatek.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-mediatek@lists.infradead.org" 
        <linux-mediatek@lists.infradead.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        "srv_heupstream@mediatek.com" <srv_heupstream@mediatek.com>,
        "jens.wiklander@linaro.org" <jens.wiklander@linaro.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "op-tee@lists.trustedfirmware.org" <op-tee@lists.trustedfirmware.org>,
        "matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
        "angelogioacchino.delregno@collabora.com" 
        <angelogioacchino.delregno@collabora.com>
Subject: Re: [PATCH] tee: add FOLL_LONGTERM for CMA case when alloc shm
Thread-Topic: [PATCH] tee: add FOLL_LONGTERM for CMA case when alloc shm
Thread-Index: AQHZiG5Ti2msX8Qf8EyhdjKxcboKPK9eE0uAgAAFAYCAAARtAIAADxWA
Date:   Wed, 17 May 2023 09:02:42 +0000
Message-ID: <5f15cbe42ecb0188f674084e3c5c2280886c3c3f.camel@mediatek.com>
References: <20230517031856.19660-1-xiaoming.ding@mediatek.com>
         <ZGSDoVKKVqCkbaCB@infradead.org>
         <CAFA6WYO+AvnbuAdWyBAQ8HkLaOno7PXdsPb9SubxrGNvAm4UnQ@mail.gmail.com>
         <ZGSLiiK/JzD5KMd7@infradead.org>
In-Reply-To: <ZGSLiiK/JzD5KMd7@infradead.org>
Accept-Language: zh-CN, en-US
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?eE1US3hmV3NGZTlFKy82K1AxZzBNWHduWjBqVmJ4Z0I3WTVJSjJiaHFBUmFh?=
 =?utf-8?B?QVlYVDF0UzFMQmhENStVNGRMSGhCY1Mra3ZCVWMrUmdHMWxEQTh2R1JCSXl5?=
 =?utf-8?B?THM2eGx1eVV5ZGpWc25NS3Z5cTlUT3NHa01kaTR3MGovU3J3YVdTNnlTMUVj?=
 =?utf-8?B?MVo3YndLTUIrV3VyK284aWJMZGNGbnVuL0FiWDhwZ0h5cFB5cWZlWDNvK04w?=
 =?utf-8?B?RktNbktoM2pvT25UNlRSTVpWTEpTWUppWU5Sa0FlOFI4QWdzTVE5cVV2NVJL?=
 =?utf-8?B?RDBjQnZqOXVwNCtWWGZYUmc1Y2RrU2x0aGt0UkFMdzhHMmNXVmw4aWljdHBG?=
 =?utf-8?B?UzBsM0dSVlQ3K1FRVTJzNmtLWktZVSszN0lvSEMxN0k3a2F5eDE5eGl0VnI2?=
 =?utf-8?B?VHVkM1M5TWFJUnJoZlFuRUx3NWt1aEFPNnNHTTBqdlQ1eGdia3QzWnBDSERC?=
 =?utf-8?B?ZHpMYXZPZU5zUnBzQ3NsQ3dnNWhXOXFVa1hzTXRUUE9VY0dQSVhxWERmT0Fx?=
 =?utf-8?B?dzFHdWNGb2t4dWdmZ1Zja0FxcFZTY1FENDlpQnBPdHdlUXc0Q3R5bnV4SmtD?=
 =?utf-8?B?RzR3OWpPOUV2a1pRVVN3eFpkd2cvaWg2RWUrZ3Z4eUpOaWd6eGlGSTlydWM5?=
 =?utf-8?B?WHpNbStKL1FaRzBHM2tHRzRpOE5GQytQVFVwd2lFZjlsZ0VodDErSHVlMlhQ?=
 =?utf-8?B?djZCSVliUXJzNXdwUk5BUkRnSzlQR0RiOTBMMi9oSnhmTUdJZFluVENuZExD?=
 =?utf-8?B?aVQ0KzI3QkVLNDlXY3U5NVlrdVluNlc4MFpJZXJJbnY1WW1MaG05TFdUcnQ0?=
 =?utf-8?B?YUdIbE45VmZFL2VFbUJlcFIzcGU2RWExZXBkVkc0YkxURGMrYVBOd0liRjRT?=
 =?utf-8?B?dWRUc1J1aDFxdmtWY2ZTelhEVEJXbWtUL0N4bUlwQkFQV0g0V3gyUElvSjdk?=
 =?utf-8?B?MkhtdzBWSkErU0JZSXdaVjZwaFdqajZLSVJWWEVnZ1dQcVB0dnFxYTF2Sjhu?=
 =?utf-8?B?RHJKUVBqMUlkL2lBVktHNStPbXlPY2ZVUm1yWnZSZHBhSG11eHFLSVJqZ1Fl?=
 =?utf-8?B?aUI1VzI0VlF4SnFEa2pUb2VKUXJYZ053L2phV3V6eG5oQWVmQVRvMmpLR2Fx?=
 =?utf-8?B?U0t3Ym90dnM5cTNkSHljdDUvZmlPNXBtOXB3VXNvS2JnLzZLdjloV3R5WjZ6?=
 =?utf-8?B?Mml0Q1hwZWQ4ZXZHZ1N0WGE3YWdSU0oxOEdMV3M2cUxiaVR1Y2lFbWtpTGNP?=
 =?utf-8?B?c0NpdnNHZzNCS291Nko0dkdDeGdsd2VCWW1CbkVvc01UeG5MaWlROWVWUGlS?=
 =?utf-8?B?L2IwQVBvUkpEZ1M1OEhZUExCdmVxMEtDYlRZZlN0WUJSaUJhZnNZd3VKODFx?=
 =?utf-8?B?cGoxTktsYmk5dHBCTG9UdEc5a3dPUlNVclo2UjhEUGtjTDBVdUlPNzIwMVFt?=
 =?utf-8?B?WVZuTEp5Z3JKUkc1T2hEZUdTZHFoa0VhQ2Z3S0VodTFORXVpVmlmS0Z5Wi9G?=
 =?utf-8?B?RDM4dktZUTVnVWVwNnYxQzJqaC9NMWRHckFHb0lvd0VNdWNWQmVTQXR5NVdo?=
 =?utf-8?B?YXVwZHFpYjVWbmFFU2FMVWFvdDUzZWZmdUVLbEMyMnJyVEpOdUc1d1ZvbjY2?=
 =?utf-8?B?U2krMUorbHVCaSt2NE4rVXVobS9vYkxaNlpYV0lwYWx0ZFQydXZNR200RlBC?=
 =?utf-8?B?M2dGS2dQV1pTUFFNNTErR283MW5qTlJsTDVBVnpaRGJBUmxNTytCTi9JYkRL?=
 =?utf-8?B?Sk5TVnBZNjlSTWh2YUFub3ZTM2dNcndjOWhvT0lUM2wrY0F5YWkvak9GSzlH?=
 =?utf-8?B?SHp0UWc1N0VxS1ljaG9rY3lwd2pwSDYwOHFCREpIZlIwS0Z2UUtLTm9TQnJr?=
 =?utf-8?B?b2krdy9LbG5oUnhlZzVPQyt0WUptUEMyOFJZdVh4RVBqWUVCbGt4T0dWYWxq?=
 =?utf-8?B?UmsrTVk4dE1BM0wrRm5VM0x3TmQ1RmNnMnRaSCtRenJ6QzFuaGRwZ0J5aDhv?=
 =?utf-8?B?TG4rTXpqYXRMRTZTbjkzUGhwZ2RnZnVvYlhWN2FnRVpqWmlUMUN6dDBaKy82?=
 =?utf-8?B?aUh6NnBDK0w0Ly9PdDlZalRBcS8ra1VFNnBFT1JRaGtNbHhqTFUycGgwVG4r?=
 =?utf-8?B?WjlGUXJnWGNMU3lDZ0ZQOXMrT3ZRWnZ1cUFIWm9pelo2c21YMlRkTnJ6Nldy?=
 =?utf-8?B?VWc9PQ==?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <34C2744510B4CB4D81423F4C368A3B5E@apcprd03.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: SI2PR03MB5369.apcprd03.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 50e3fce3-1c69-4e8c-4ef2-08db56b57925
X-MS-Exchange-CrossTenant-originalarrivaltime: 17 May 2023 09:02:42.4446
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: a7687ede-7a6b-4ef6-bace-642f677fbe31
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: WfmeI8C04qAQ26k6yDRHOnNk9ut1bdmsrV7gV8oJIY4iW3a37jgJpKD/f2ljs5tL1idaiQ8QF0I/SNh9G14EvNApdEXPXZn54/Q8WhDtBEE=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SEZPR03MB7442
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,
        T_SCC_BODY_TEXT_LINE,T_SPF_TEMPERROR,UNPARSEABLE_RELAY,URIBL_BLOCKED
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
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