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[209.132.180.67]) by mx.google.com with ESMTP id w21si495946otj.321.2020.03.05.18.30.41; Thu, 05 Mar 2020 18:30:53 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726533AbgCFCaU (ORCPT + 99 others); Thu, 5 Mar 2020 21:30:20 -0500 Received: from szxga03-in.huawei.com ([45.249.212.189]:2600 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726162AbgCFCaU (ORCPT ); Thu, 5 Mar 2020 21:30:20 -0500 Received: from DGGEMM401-HUB.china.huawei.com (unknown [172.30.72.53]) by Forcepoint Email with ESMTP id 3B670B3110407F097E6C; Fri, 6 Mar 2020 10:30:18 +0800 (CST) Received: from dggeme701-chm.china.huawei.com (10.1.199.97) by DGGEMM401-HUB.china.huawei.com (10.3.20.209) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 6 Mar 2020 10:30:17 +0800 Received: from dggeme753-chm.china.huawei.com (10.3.19.99) by dggeme701-chm.china.huawei.com (10.1.199.97) 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 10:30:17 +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 10:30:17 +0800 From: linmiaohe To: Wanpeng Li CC: "hpa@zytor.com" , 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: AdXzXu2PSc7pa5yVRvaRRlGuRkJn5g== Date: Fri, 6 Mar 2020 02:30:17 +0000 Message-ID: <9063b8c3e1664c72b05ea92865f88c68@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 V2FucGVuZyBMaSA8a2VybmVsbHdwQGdtYWlsLmNvbT4gd3JvdGU6DQo+T24gRnJpLCA2IE1hciAy MDIwIGF0IDEwOjIzLCBsaW5taWFvaGUgPGxpbm1pYW9oZUBodWF3ZWkuY29tPiB3cm90ZToNCj4+ DQo+PiBocGFAenl0b3IuY29tIHdyb3RlOg0KPj4gPj5PbiBNYXJjaCA1LCAyMDIwIDY6MDU6NDAg UE0gUFNULCBsaW5taWFvaGUgPGxpbm1pYW9oZUBodWF3ZWkuY29tPiB3cm90ZToNCj4+ID4+SGks DQo+PiA+PlBhb2xvIEJvbnppbmkgPHBib256aW5pQHJlZGhhdC5jb20+IHdyb3RlOg0KPj4gPj5N YW55IHRoYW5rcyBmb3Igc3VnZ2VzdGlvbi4gV2hhdCBkbyB5b3UgbWVhbiBpcyBsaWtlIHRoaXMg Pw0KPj4gPj4NCj4+ID4+ICAgICAgaW5kZXggPSAobXNyIC0gMHgyMDApID4+IDE7DQo+PiA+PiAg ICAgIGlzX210cnJfbWFzayA9IG1zciAmIDE7DQo+PiA+Pg0KPj4gPj5UaGFua3MgYWdhaW4uDQo+ PiA+DQo+PiA+WW91IHJlYWxpemUgdGhhdCB0aGUgY29tcGlsZXIgd2lsbCBwcm9iYWJseSBwcm9k dWNlIGV4YWN0bHkgdGhlIHNhbWUgY29kZSwgcmlnaHQ/IEFzIHN1Y2gsIGl0IGlzIGFib3V0IG1h a2luZyB0aGUgY29kZSBlYXN5IGZvciB0aGUgaHVtYW4gcmVhZGVyLg0KPj4gPg0KPj4gPkV2ZW4g aWYgaXQgZGlkbid0LCB0aGlzIGNvZGUgaXMgYXMgZmFyIGZyb20gcGVyZm9ybWFuY2UgY3JpdGlj YWwgYXMgb25lIGNhbiBwb3NzaWJseSBnZXQuDQo+Pg0KPj4gWWVwLCBpdCBsb29rcyBnYWluIGxp dHRsZS4gVGhhbmtzLg0KPg0KPlBsZWFzZSBwb3N0IHRoZSBwZXJmb3JtYW5jZSBudW1iZXIgd2hl biB5b3UgbWVudGlvbiBvcHRpbWl6ZSBYWFggbGF0ZXIuDQo+DQoNClN1cmUsIEkgd291bGQgdGFr ZSBjYXJlIG9mIHRoaXMuIFRoYW5rcyBmb3IgeW91ciByZW1pbmRlciENCg0K