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_PASS autolearn=ham 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 22927C43441 for ; Fri, 12 Oct 2018 04:33:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CEE8320645 for ; Fri, 12 Oct 2018 04:33:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEE8320645 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727214AbeJLMDg (ORCPT ); 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Thu, 11 Oct 2018 21:33:05 -0700 Received: from shsmsx104.ccr.corp.intel.com ([169.254.5.48]) by SHSMSX103.ccr.corp.intel.com ([169.254.4.245]) with mapi id 14.03.0319.002; Fri, 12 Oct 2018 12:33:03 +0800 From: "Zhang, Ning A" To: "linux-kernel@vger.kernel.org" , "linux-media@vger.kernel.org" Subject: Re: question about V4L2_MEMORY_USERPTR on 64bit applications Thread-Topic: question about V4L2_MEMORY_USERPTR on 64bit applications Thread-Index: AQHUYdg6M/rTSYlERUCXZPSjuhezLaUaf4UA Date: Fri, 12 Oct 2018 04:33:03 +0000 Message-ID: <1539318782.21249.7.camel@intel.com> References: <1539313441.21249.3.camel@intel.com> In-Reply-To: <1539313441.21249.3.camel@intel.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.16.115] Content-Type: text/plain; charset="utf-8" Content-ID: <9FBD4F6272ACF147B26934BDF01033E9@intel.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org c29ycnkgZm9yIHdyb25nIHF1ZXN0aW9uLCBJIHJlYWxseSBtZWV0IG1lbW9yeSBhZGRyZXNzIHRy dW5jYXRlZCBpc3N1ZSwNCndoZW4gdXNlIFY0TDIga2VybmVsIEFQSXMuDQoNCmluIGEga2VybmVs IHRocmVhZCBjcmVhdGVkIGJ5IGtlcm5lbF90aHJlYWQoKQ0KSSB2bV9tbWFwIGEgc2htZW1fZmls ZSB0byBhZGRyOiAwMDAwN2ZmZmY3ZmE4MDAwDQphbmQgcXVldWUgaXQgdG8gVjRMMiwgYWZ0ZXIg ZGVxdWV1ZSBpdCwgYW5kIEkgZmluZCB0aGUgYWRkcmVzcyBpcw0KdHJ1bmNhdGVkIHRvIDAwMDAw MDAwZjdmYTgwMDANCg0KSSB1c2UgX191NjQge2FrYSBsb25nIGxvbmcgdW5zaWduZWQgaW50fSB0 byBzYXZlIGFkZHJlc3MsIGFuZCBJIGZpbmQNCnVzZXJwdHIgaXMgdW5zaWduZWQgbG9uZywgd3Jv bmdseSB0aGluayBpdCBhcyAiZGF0YSB0cnVuY2F0ZWQiDQphbmQgYSBsb3Qgb2YgX191MzIgaW4g dGhpcyBzdHJ1Y3R1cmUuDQoNCmV2ZXJ5dGhpbmcgd29ya3MgZmluZSwgYnV0IEkgc3RpbGwgZG9u J3QgdW5kZXJzdGFuZCB3aHkgaGlnaCAzMmJpdCBiZQ0KMC4uDQoNCkJSLg0KTmluZy4NCg0KDQrl nKggMjAxOC0xMC0xMuS6lOeahCAxMTowNCArMDgwMO+8jFpoYW5nIE5pbmflhpnpgZPvvJoNCj4g SGksDQo+IA0KPiBJIGhhdmUgcXVlc3Rpb24gYWJvdXQgVjRMMl9NRU1PUllfVVNFUlBUUiBvbiA2 NGJpdCBhcHBsaWNhdGlvbnMuDQo+IA0KPiBzdHJ1Y3QgdjRsMl9idWZmZXIgew0KPiAJX191MzIJ CQlpbmRleDsNCj4gCV9fdTMyCQkJdHlwZTsNCj4gCV9fdTMyCQkJYnl0ZXN1c2VkOw0KPiAJX191 MzIJCQlmbGFnczsNCj4gCV9fdTMyCQkJZmllbGQ7DQo+IAlzdHJ1Y3QgdGltZXZhbAkJdGltZXN0 YW1wOw0KPiAJc3RydWN0IHY0bDJfdGltZWNvZGUJdGltZWNvZGU7DQo+IAlfX3UzMgkJCXNlcXVl bmNlOw0KPiANCj4gCS8qIG1lbW9yeSBsb2NhdGlvbiAqLw0KPiAJX191MzIJCQltZW1vcnk7DQo+ IAl1bmlvbiB7DQo+IAkJX191MzLCoMKgwqDCoMKgwqDCoMKgwqDCoMKgb2Zmc2V0Ow0KPiAJCXVu c2lnbmVkIGxvbmfCoMKgwqB1c2VycHRyOyAgIDw8PC0tLSB0aGlzIGlzIGEgMzJiaXQgYWRkci4N Cj4gCQlzdHJ1Y3QgdjRsMl9wbGFuZSAqcGxhbmVzOw0KPiAJCV9fczMyCQlmZDsNCj4gCX0gbTsN Cj4gCV9fdTMyCQkJbGVuZ3RoOw0KPiAJX191MzIJCQlyZXNlcnZlZDI7DQo+IAlfX3UzMgkJCXJl c2VydmVkOw0KPiB9Ow0KPiANCj4gd2hlbiB1c2UgYSA2NGJpdCBhcHBsaWNhdGlvbiwgbWVtb3J5 IGZyb20gbWFsbG9jIGlzIDY0Yml0IGFkZHJlc3MuDQo+IG1lbW9yeSBmcm9tIEdQVSAoZWcsIGlu dGVsIGk5MTUpIGFyZSBhbHNvIDY0Yml0IGFkZHJlc3MuDQo+IA0KPiB3aGVuIHVzZSB0aGVzZSBr aW5kIG9mIG1lbW9yeSBhc8KgVjRMMl9NRU1PUllfVVNFUlBUUiwgYWRkcmVzcyB3aWxsIGJlDQo+ IHRydW5jYXRlZCBpbnRvIDMyYml0Lg0KPiANCj4gdGhpcyB3b3VsZCBiZSBlcnJvciwgYnV0IGFj dHVhbGx5IG5vdC4gSSByZWFsbHkgZG9uJ3QgdW5kZXJzdGFuZC4NCj4gDQo+IEJSLg0KPiBOaW5n Lg==