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=-1.0 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 CE528C10F0E for ; Mon, 15 Apr 2019 09:02:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9FA0120693 for ; Mon, 15 Apr 2019 09:02:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726520AbfDOJB7 (ORCPT ); Mon, 15 Apr 2019 05:01:59 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:48793 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725798AbfDOJB7 (ORCPT ); Mon, 15 Apr 2019 05:01:59 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-227-CVLGtbTqOfaBQjKtMMmI4A-2; Mon, 15 Apr 2019 10:01:55 +0100 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b::d117) by AcuMS.aculab.com (fd9f:af1c:a25b::d117) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Mon, 15 Apr 2019 10:03:05 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Mon, 15 Apr 2019 10:03:05 +0100 From: David Laight To: 'Paolo Bonzini' , Sean Christopherson CC: "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" Subject: RE: [PATCH] KVM: x86: optimize check for valid PAT value Thread-Topic: [PATCH] KVM: x86: optimize check for valid PAT value Thread-Index: AQHU74O4C+qyka3PCE+FdT/UfNmwwaY1VKDwgABM6iOAAQTVgIAGL5+AgAAdYAA= Date: Mon, 15 Apr 2019 09:03:05 +0000 Message-ID: References: <1554890126-347-1-git-send-email-pbonzini@redhat.com> <20190410145725.GB10760@linux.intel.com> <39f5588fe3394c88bcf139c820af2033@AcuMS.aculab.com> <1fa33c9b-eede-9214-b8af-b38d00047898@redhat.com> In-Reply-To: <1fa33c9b-eede-9214-b8af-b38d00047898@redhat.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: CVLGtbTqOfaBQjKtMMmI4A-2 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogUGFvbG8gQm9uemluaQ0KPiBTZW50OiAxNSBBcHJpbCAyMDE5IDA5OjEyDQo+IE9uIDEx LzA0LzE5IDExOjA2LCBEYXZpZCBMYWlnaHQgd3JvdGU6DQo+ID4gSXQgbWF5IGJlIHBvc3NpYmxl IHRvIGdlbmVyYXRlIHNob3J0ZXIgY29kZSB0aGF0IGV4ZWN1dGVzIGp1c3QgYXMNCj4gPiBmYXN0 IGJ5IGdlbmVyYXRpbmcgYSBzaW5nbGUgY29uc3RhbnQgYW5kIGRlcml2aW5nIHRoZSBvdGhlcnMg ZnJvbSBpdC4NCj4gPiAtIGdlbmVyYXRlIDRzIC0gbmVlZGVkIGZpcnN0DQo+ID4gLSBzaGlmdCBy aWdodCAyIHRvIGdldCAxcyAoaW4gcGFyYWxsZWwgd2l0aCB0aGUgeG9yKQ0KPiA+IC0gdXNlIGxl YSB0byBnZXQgNnMgKGluIHBhcmFsbGVsIHdpdGggYW4gbGVhIHRvIGRvIHRoZSBhZGQpDQo+ID4g LSBpbnZlcnQgdGhlIDFzIHRvIGdldCBGRXMgKGFsc28gaW4gcGFyYWxsZWwgd2l0aCB0aGUgYWRk KQ0KPiA+IC0geG9yIHRoZSBGRXMgd2l0aCB0aGUgNnMgdG8gZ2V0IEY4cyAoaW4gcGFyYWxsZWwg d2l0aCB0aGUgb3IpDQo+ID4gLSBhbmQvdGVzdCBmb3IgdGhlIHJlc3VsdA0KDQpUaGF0IHZlcnNp b24gbmVlZHMgYW4gZXh0cmEgcmVnaXN0ZXIgbW92ZSBJIGhhZG4ndCBhbGxvd2VkIGZvci4NCkl0 IGlzIGFsc28gaW1wb3NzaWJsZSB0byBzdG9wIGdjYyBmb2xkaW5nIGNvbnN0YW50IGV4cHJlc3Np b25zDQp3aXRob3V0IGFuIGFzbSBub3Agb24gYSByZWdpc3Rlci4NCg0KPiBGV0lXLCBoZXJlIGlz IHlldCBhbm90aGVyIHdheSB0byBkbyBpdDoNCj4gDQo+IC8qIENoYW5nZSA2LzcgdG8gNC81ICov DQo+IGRhdGEgJj0gfigoZGF0YSAmIDB4MDQwNDA0MDQwNDA0MDQwNFVMTCkgPj4gMSk7DQo+IC8q IE9ubHkgYWxsb3cgMC8xLzQvNSBub3cgKi8NCj4gcmV0dXJuICEoZGF0YSAmIDB4RkFGQUZBRkFG QUZBRkFGQVVMTCk7DQo+IA0KPiBtb3ZhYnMgJDB4NDA0MDQwNDA0MDQwNDA0LCAlcmN4DQo+IGFu ZHEgICAlcmR4LCAlcmN4DQo+IHNocnEgICAlcmN4DQo+IG5vdHEgICAlcmN4DQo+IG1vdmFicyAk MHhGQUZBRkFGQUZBRkFGQSwgJXJheA0KPiBhbmRxICAgJXJjeCwgJXJkeA0KPiB0ZXN0ICAgJXJh eCwgJXJkeA0KDQpGZXdlciBvcGNvZGUgYnl0ZXMsIGJ1dCA1IGRlcGVuZGFudCBpbnN0cnVjdGlv bnMNCihhc3N1bWluZyB0aGUgZmlyc3QgY29uc3RhbnQgY2FuIGV4ZWN1dGVkIGluIHBhcmFsbGVs DQp3aXRoIGFuIGVhcmxpZXIgaW5zdHJ1Y3Rpb24pLg0KSSB0aGluayBteSBvbmUgd2FzIG9ubHkg NCBkZXBlbmRhbnQgaW5zdHJ1Y3Rpb25zLg0KDQpBbGwgdGhlc2UgYXJlIGZhciBmYXN0ZXIgdGhh biB0aGUgbG9vcC4uLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRl LCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpS ZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K