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 6F117C433F5 for ; Tue, 4 Sep 2018 09:12:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1B93C2086C for ; Tue, 4 Sep 2018 09:12:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1B93C2086C 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 S1727363AbeIDNhJ (ORCPT ); Tue, 4 Sep 2018 09:37:09 -0400 Received: from mga04.intel.com ([192.55.52.120]:60994 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726263AbeIDNhJ (ORCPT ); Tue, 4 Sep 2018 09:37:09 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Sep 2018 02:12:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,328,1531810800"; d="scan'208";a="87447444" Received: from fmsmsx106.amr.corp.intel.com ([10.18.124.204]) by orsmga001.jf.intel.com with ESMTP; 04 Sep 2018 02:12:55 -0700 Received: from shsmsx104.ccr.corp.intel.com (10.239.4.70) by FMSMSX106.amr.corp.intel.com (10.18.124.204) with Microsoft SMTP Server (TLS) id 14.3.319.2; Tue, 4 Sep 2018 02:12:55 -0700 Received: from shsmsx103.ccr.corp.intel.com ([169.254.4.240]) by SHSMSX104.ccr.corp.intel.com ([169.254.5.143]) with mapi id 14.03.0319.002; Tue, 4 Sep 2018 17:12:53 +0800 From: "Yang, Bin" To: "tglx@linutronix.de" CC: "mingo@kernel.org" , "hpa@zytor.com" , "linux-kernel@vger.kernel.org" , "peterz@infradead.org" , "Gross, Mark" , "x86@kernel.org" , "Hansen, Dave" Subject: Re: [PATCH v3 1/5] x86/mm: avoid redundant checking if pgprot has no change Thread-Topic: [PATCH v3 1/5] x86/mm: avoid redundant checking if pgprot has no change Thread-Index: AQHUOOyjY4j6eKGfo0i2H1+4H4FSu6TeqiKAgACX8wCAAA1xAIAAFyQA Date: Tue, 4 Sep 2018 09:12:52 +0000 Message-ID: <2db43c762164cada1b85ffd63262b5247fd2e3dc.camel@intel.com> References: <1534814186-37067-1-git-send-email-bin.yang@intel.com> <1534814186-37067-2-git-send-email-bin.yang@intel.com> <76cf0aca5a2f8e9b94fd0631274a3d4ad825d077.camel@intel.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.4.160] Content-Type: text/plain; charset="utf-8" Content-ID: <036461DE681F0C40ADA761B9EC2D2361@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 T24gVHVlLCAyMDE4LTA5LTA0IGF0IDA5OjQ5ICswMjAwLCBUaG9tYXMgR2xlaXhuZXIgd3JvdGU6 DQo+IE9uIFR1ZSwgNCBTZXAgMjAxOCwgWWFuZywgQmluIHdyb3RlOg0KPiA+IE9uIE1vbiwgMjAx OC0wOS0wMyBhdCAyMzo1NyArMDIwMCwgVGhvbWFzIEdsZWl4bmVyIHdyb3RlOg0KPiA+ID4gDQo+ ID4gPiBUaGUgbGFzdCBwYXRjaCB3aGljaCBkb2VzIHRoZSBvdmVybGFwIGNoZWNrIGlzIGVxdWFs bHkgYnJva2VuOg0KPiA+IA0KPiA+IFNvcnJ5IHRoYXQgSSBkaWQgbm90IHVuZGVyc3RhbmQgdGhl IGJyb2tlbiBvZiBsYXN0IHBhdGNoLg0KPiANCj4gSSBtZWFudCA0LzUgc29ycnkuIFRoYXQncyB0 aGUgb25lIHdoaWNoIGludHJvZHVjZXMgdGhlIG92ZXJsYXAgY2hlY2sgYW5kDQo+IGRvZXMgdGhp czoNCj4gDQo+ID4gPiArICAgICAgIC8qDQo+ID4gPiArICAgICAgICAqIEVuc3VyZSB0aGF0IHRo ZSByZXF1ZXN0ZWQgcGdwcm90IGRvZXMgbm90IHZpb2xhdGUgc3RhdGljIHByb3RlY3Rpb24NCj4g PiA+ICsgICAgICAgICogcmVxdWlyZW1lbnRzLg0KPiA+ID4gKyAgICAgICAgKi8NCj4gPiA+ICsg ICAgICAgbmV3X3Byb3QgPSBzdGF0aWNfcHJvdGVjdGlvbnMocmVxX3Byb3QsIGFkZHJlc3MsDQo+ ID4gPiArICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIG51bXBhZ2VzIDw8IFBB R0VfU0hJRlQsIHBmbik7DQo+ID4gPiANCj4gPiA+IEl0IGV4cGFuZHMgbmV3X3Byb3QgdG8gdGhl IHdob2xlIHJhbmdlIGV2ZW4gaWYgdGhlIHByb3RlY3Rpb25zIG9ubHkNCj4gPiA+IG92ZXJsYXAu IFRoYXQgc2hvdWxkIG5vdCBoYXBwZW4gaW4gcHJhY3RpY2UsIGJ1dCB3ZSBoYXZlIG5vIGNoZWNr cyBmb3IgdGhhdA0KPiA+ID4gYXQgYWxsLg0KPiA+IA0KPiA+IEJlbG93IGNvZGUgaW4gcGF0Y2gg IzMgc2hvdWxkIGNvdmVyIHRoaXMgY2hlY2suIEl0IHdpbGwgZG91YmxlIGNoZWNrDQo+ID4gbmV3 X3Byb3QgaW4gd2hvbGUgbGFyZ2UgcGFnZSByYW5nZS4NCj4gDQo+IFdoaWNoIGlzIGV4YWN0bHkg d2hhdCBpcyB3cm9uZy4gUmVhZCBhZ2FpbiB3aGF0IEkgd3JvdGUuDQo+IA0KPiBUaGFua3MsDQo+ IA0KPiAJdGdseA0K