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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 DA24FC33CB1 for ; Thu, 16 Jan 2020 08:51:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B944C2073A for ; Thu, 16 Jan 2020 08:51:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731450AbgAPIvL (ORCPT ); Thu, 16 Jan 2020 03:51:11 -0500 Received: from szxga01-in.huawei.com ([45.249.212.187]:2927 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731326AbgAPIvH (ORCPT ); Thu, 16 Jan 2020 03:51:07 -0500 Received: from DGGEMM405-HUB.china.huawei.com (unknown [172.30.72.55]) by Forcepoint Email with ESMTP id DA255764A2E338198254; Thu, 16 Jan 2020 16:51:03 +0800 (CST) Received: from dggeme713-chm.china.huawei.com (10.1.199.109) by DGGEMM405-HUB.china.huawei.com (10.3.20.213) with Microsoft SMTP Server (TLS) id 14.3.439.0; Thu, 16 Jan 2020 16:51:03 +0800 Received: from dggeme763-chm.china.huawei.com (10.3.19.109) by dggeme713-chm.china.huawei.com (10.1.199.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Thu, 16 Jan 2020 16:51:03 +0800 Received: from dggeme763-chm.china.huawei.com ([10.6.66.36]) by dggeme763-chm.china.huawei.com ([10.6.66.36]) with mapi id 15.01.1713.004; Thu, 16 Jan 2020 16:51:03 +0800 From: linmiaohe To: Haiwei Li , "vkuznets@redhat.com" CC: "pbonzini@redhat.com" , Sean Christopherson , "wanpengli@tencent.com" , "jmattson@google.com" , "joro@8bytes.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "hpa@zytor.com" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "x86@kernel.org" Subject: Re: [PATCH] KVM: Adding 'else' to reduce checking. Thread-Topic: [PATCH] KVM: Adding 'else' to reduce checking. Thread-Index: AdXMSW9HbPEI3mwRZ0ulzm8GsLwwxQ== Date: Thu, 16 Jan 2020 08:51:02 +0000 Message-ID: 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 SGk6DQpIYWl3ZWkgTGkgPGxpaGFpd2VpLmtlcm5lbEBnbWFpbC5jb20+IHdyaXRlczoNCj4gRnJv bSA0ZTE5NDM2Njc5YTk3ZTNjZWU3M2I0YWU2MTNmZjkxNTgwYzcyMWQyIE1vbiBTZXAgMTcgMDA6 MDA6MDAgMjAwMQ0KPiBGcm9tOiBIYWl3ZWkgTGkgPGxpaGFpd2VpQHRlbmNlbnQuY29tPg0KPiBE YXRlOiBUaHUsIDE2IEphbiAyMDIwIDEzOjUxOjAzICswODAwDQo+IFN1YmplY3Q6IFtQQVRDSF0g QWRkaW5nICdlbHNlJyB0byByZWR1Y2UgY2hlY2tpbmcuDQo+DQo+IFRoZXNlIHR3byBjb25kaXRp b25zIGFyZSBpbiBjb25mbGljdCwgYWRkaW5nICdlbHNlJyB0byByZWR1Y2UgY2hlY2tpbmcuDQo+ DQo+IFNpZ25lZC1vZmYtYnk6IEhhaXdlaSBMaSA8bGloYWl3ZWlAdGVuY2VudC5jb20+DQo+IC0t LQ0KPiAgIGFyY2gveDg2L2t2bS9sYXBpYy5jIHwgMiArLQ0KPiAgIDEgZmlsZSBjaGFuZ2VkLCAx IGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQ0KPg0KPiBkaWZmIC0tZ2l0IGEvYXJjaC94ODYv a3ZtL2xhcGljLmMgYi9hcmNoL3g4Ni9rdm0vbGFwaWMuYyBpbmRleCA2Nzk2OTJiLi5lZjU4MDJm IDEwMDY0NA0KPiAtLS0gYS9hcmNoL3g4Ni9rdm0vbGFwaWMuYw0KPiArKysgYi9hcmNoL3g4Ni9r dm0vbGFwaWMuYw0KPiBAQCAtMTU3Myw3ICsxNTczLDcgQEAgc3RhdGljIHZvaWQNCj4ga3ZtX2Fw aWNfaW5qZWN0X3BlbmRpbmdfdGltZXJfaXJxcyhzdHJ1Y3Qga3ZtX2xhcGljICphcGljKQ0KPiAg ICAgICAgICBrdm1fYXBpY19sb2NhbF9kZWxpdmVyKGFwaWMsIEFQSUNfTFZUVCk7DQo+ICAgICAg ICAgIGlmIChhcGljX2x2dHRfdHNjZGVhZGxpbmUoYXBpYykpDQo+ICAgICAgICAgICAgICAgICAg a3RpbWVyLT50c2NkZWFkbGluZSA9IDA7DQo+IC0gICAgICAgaWYgKGFwaWNfbHZ0dF9vbmVzaG90 KGFwaWMpKSB7DQo+ICsgICAgICAgZWxzZSBpZiAoYXBpY19sdnR0X29uZXNob3QoYXBpYykpIHsN Cj4gICAgICAgICAgICAgICAgICBrdGltZXItPnRzY2RlYWRsaW5lID0gMDsNCj4gICAgICAgICAg ICAgICAgICBrdGltZXItPnRhcmdldF9leHBpcmF0aW9uID0gMDsNCj4gICAgICAgICAgfQ0KDQpF eGNlcHQgZm9yIHRoZSBjb2Rpbmcgc3R5bGUgZmlndXJlZCBvdXQgYnkgVml0YWx5LCB0aGlzIHBh dGNoIGxvb2tzIGZpbmUgZm9yIG1lLiBTbzoNCg0KUmV2aWV3ZWQtYnk6IE1pYW9oZSBMaW4gPGxp bm1pYW9oZUBodWF3ZWkuY29tPg0K