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[209.132.180.67]) by mx.google.com with ESMTP id v20-v6si9416plo.147.2018.10.11.21.33.26; Thu, 11 Oct 2018 21:33:41 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727162AbeJLMDg (ORCPT + 99 others); Fri, 12 Oct 2018 08:03:36 -0400 Received: from mga12.intel.com ([192.55.52.136]:21726 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726731AbeJLMDg (ORCPT ); Fri, 12 Oct 2018 08:03:36 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Oct 2018 21:33:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,371,1534834800"; d="scan'208";a="98537394" Received: from fmsmsx103.amr.corp.intel.com ([10.18.124.201]) by fmsmga001.fm.intel.com with ESMTP; 11 Oct 2018 21:33:06 -0700 Received: from fmsmsx126.amr.corp.intel.com (10.18.125.43) by FMSMSX103.amr.corp.intel.com (10.18.124.201) with Microsoft SMTP Server (TLS) id 14.3.319.2; Thu, 11 Oct 2018 21:33:06 -0700 Received: from shsmsx103.ccr.corp.intel.com (10.239.4.69) by FMSMSX126.amr.corp.intel.com (10.18.125.43) with Microsoft SMTP Server (TLS) id 14.3.319.2; 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==