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 6D588C28CF8 for ; Fri, 12 Oct 2018 03:04:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2647F20835 for ; Fri, 12 Oct 2018 03:04:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2647F20835 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 S1726969AbeJLKeT (ORCPT ); Fri, 12 Oct 2018 06:34:19 -0400 Received: from mga01.intel.com ([192.55.52.88]:35856 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726034AbeJLKeS (ORCPT ); Fri, 12 Oct 2018 06:34:18 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Oct 2018 20:04:05 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,371,1534834800"; d="scan'208";a="80820315" Received: from fmsmsx106.amr.corp.intel.com ([10.18.124.204]) by orsmga008.jf.intel.com with ESMTP; 11 Oct 2018 20:04:05 -0700 Received: from fmsmsx101.amr.corp.intel.com (10.18.124.199) by FMSMSX106.amr.corp.intel.com (10.18.124.204) with Microsoft SMTP Server (TLS) id 14.3.319.2; Thu, 11 Oct 2018 20:04:04 -0700 Received: from shsmsx103.ccr.corp.intel.com (10.239.4.69) by fmsmsx101.amr.corp.intel.com (10.18.124.199) with Microsoft SMTP Server (TLS) id 14.3.319.2; Thu, 11 Oct 2018 20:04:04 -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 11:04:03 +0800 From: "Zhang, Ning A" To: "linux-kernel@vger.kernel.org" , "linux-media@vger.kernel.org" Subject: question about V4L2_MEMORY_USERPTR on 64bit applications Thread-Topic: question about V4L2_MEMORY_USERPTR on 64bit applications Thread-Index: AQHUYdg6M/rTSYlERUCXZPSjuhezLQ== Date: Fri, 12 Oct 2018 03:04:01 +0000 Message-ID: <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: 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 SGksDQoNCkkgaGF2ZSBxdWVzdGlvbiBhYm91dCBWNEwyX01FTU9SWV9VU0VSUFRSIG9uIDY0Yml0 IGFwcGxpY2F0aW9ucy4NCg0Kc3RydWN0IHY0bDJfYnVmZmVyIHsNCglfX3UzMgkJCWluZGV4Ow0K CV9fdTMyCQkJdHlwZTsNCglfX3UzMgkJCWJ5dGVzdXNlZDsNCglfX3UzMgkJCWZsYWdzOw0KCV9f dTMyCQkJZmllbGQ7DQoJc3RydWN0IHRpbWV2YWwJCXRpbWVzdGFtcDsNCglzdHJ1Y3QgdjRsMl90 aW1lY29kZQl0aW1lY29kZTsNCglfX3UzMgkJCXNlcXVlbmNlOw0KDQoJLyogbWVtb3J5IGxvY2F0 aW9uICovDQoJX191MzIJCQltZW1vcnk7DQoJdW5pb24gew0KCQlfX3UzMsKgwqDCoMKgwqDCoMKg wqDCoMKgwqBvZmZzZXQ7DQoJCXVuc2lnbmVkIGxvbmfCoMKgwqB1c2VycHRyOyAgIDw8PC0tLSB0 aGlzIGlzIGEgMzJiaXQgYWRkci4NCgkJc3RydWN0IHY0bDJfcGxhbmUgKnBsYW5lczsNCgkJX19z MzIJCWZkOw0KCX0gbTsNCglfX3UzMgkJCWxlbmd0aDsNCglfX3UzMgkJCXJlc2VydmVkMjsNCglf X3UzMgkJCXJlc2VydmVkOw0KfTsNCg0Kd2hlbiB1c2UgYSA2NGJpdCBhcHBsaWNhdGlvbiwgbWVt b3J5IGZyb20gbWFsbG9jIGlzIDY0Yml0IGFkZHJlc3MuDQptZW1vcnkgZnJvbSBHUFUgKGVnLCBp bnRlbCBpOTE1KSBhcmUgYWxzbyA2NGJpdCBhZGRyZXNzLg0KDQp3aGVuIHVzZSB0aGVzZSBraW5k IG9mIG1lbW9yeSBhc8KgVjRMMl9NRU1PUllfVVNFUlBUUiwgYWRkcmVzcyB3aWxsIGJlDQp0cnVu Y2F0ZWQgaW50byAzMmJpdC4NCg0KdGhpcyB3b3VsZCBiZSBlcnJvciwgYnV0IGFjdHVhbGx5IG5v dC4gSSByZWFsbHkgZG9uJ3QgdW5kZXJzdGFuZC4NCg0KQlIuDQpOaW5nLg==