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_HELO_NONE,SPF_PASS autolearn=no 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 774D1C3F2D2 for ; Fri, 6 Mar 2020 02:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5226120801 for ; Fri, 6 Mar 2020 02:23:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726982AbgCFCXA (ORCPT ); Thu, 5 Mar 2020 21:23:00 -0500 Received: from szxga03-in.huawei.com ([45.249.212.189]:2599 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726178AbgCFCW7 (ORCPT ); Thu, 5 Mar 2020 21:22:59 -0500 Received: from DGGEMM404-HUB.china.huawei.com (unknown [172.30.72.56]) by Forcepoint Email with ESMTP id 307FD2A25DEFBEA4D7A0; Fri, 6 Mar 2020 10:22:58 +0800 (CST) Received: from dggeme752-chm.china.huawei.com (10.3.19.98) by DGGEMM404-HUB.china.huawei.com (10.3.20.212) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 6 Mar 2020 10:22:57 +0800 Received: from dggeme753-chm.china.huawei.com (10.3.19.99) by dggeme752-chm.china.huawei.com (10.3.19.98) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Fri, 6 Mar 2020 10:22:57 +0800 Received: from dggeme753-chm.china.huawei.com ([10.7.64.70]) by dggeme753-chm.china.huawei.com ([10.7.64.70]) with mapi id 15.01.1713.004; Fri, 6 Mar 2020 10:22:57 +0800 From: linmiaohe To: "hpa@zytor.com" CC: Paolo Bonzini , "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , "rkrcmar@redhat.com" , "sean.j.christopherson@intel.com" , "vkuznets@redhat.com" , "jmattson@google.com" , "joro@8bytes.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" Subject: Re: [PATCH] KVM: x86: small optimization for is_mtrr_mask calculation Thread-Topic: [PATCH] KVM: x86: small optimization for is_mtrr_mask calculation Thread-Index: AdXzXdBJSc7pa5yVRvaRRlGuRkJn5g== Date: Fri, 6 Mar 2020 02:22:57 +0000 Message-ID: <4e9d847ea5d54e4fa83f3bb910242e16@huawei.com> Accept-Language: en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.173.221.158] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org aHBhQHp5dG9yLmNvbSB3cm90ZToNCj4+T24gTWFyY2ggNSwgMjAyMCA2OjA1OjQwIFBNIFBTVCwg bGlubWlhb2hlIDxsaW5taWFvaGVAaHVhd2VpLmNvbT4gd3JvdGU6DQo+PkhpLA0KPj5QYW9sbyBC b256aW5pIDxwYm9uemluaUByZWRoYXQuY29tPiB3cm90ZToNCj4+TWFueSB0aGFua3MgZm9yIHN1 Z2dlc3Rpb24uIFdoYXQgZG8geW91IG1lYW4gaXMgbGlrZSB0aGlzID8NCj4+DQo+PglpbmRleCA9 IChtc3IgLSAweDIwMCkgPj4gMTsNCj4+CWlzX210cnJfbWFzayA9IG1zciAmIDE7DQo+Pg0KPj5U aGFua3MgYWdhaW4uDQo+DQo+WW91IHJlYWxpemUgdGhhdCB0aGUgY29tcGlsZXIgd2lsbCBwcm9i YWJseSBwcm9kdWNlIGV4YWN0bHkgdGhlIHNhbWUgY29kZSwgcmlnaHQ/IEFzIHN1Y2gsIGl0IGlz IGFib3V0IG1ha2luZyB0aGUgY29kZSBlYXN5IGZvciB0aGUgaHVtYW4gcmVhZGVyLg0KPg0KPkV2 ZW4gaWYgaXQgZGlkbid0LCB0aGlzIGNvZGUgaXMgYXMgZmFyIGZyb20gcGVyZm9ybWFuY2UgY3Jp dGljYWwgYXMgb25lIGNhbiBwb3NzaWJseSBnZXQuDQoNClllcCwgaXQgbG9va3MgZ2FpbiBsaXR0 bGUuIFRoYW5rcy4NCg0K