From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: 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 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 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> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: <9FBD4F6272ACF147B26934BDF01033E9@intel.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org List-ID: 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==