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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 444EFC2BA83 for ; Wed, 12 Feb 2020 11:49:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 18AD620675 for ; Wed, 12 Feb 2020 11:49:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZJlMiwNS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728245AbgBLLtc (ORCPT ); Wed, 12 Feb 2020 06:49:32 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:37651 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725781AbgBLLtc (ORCPT ); Wed, 12 Feb 2020 06:49:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581508170; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JnelCP0BeqCKzB5HUK/Y879g+TjBn3kcCBi0brqpess=; b=ZJlMiwNSev/DjItLdpr5qq49hhhiloLf/3GwER+0FGlHIxRWt0P8Bz/7iVyTlwVg6+P9fP qyjARjfU8OkbFaVPTxaATje4PRz4PanU2ZyvYphL/rKHUZ8z4ra5U14iX8H7g/RRvPpU+0 jFTfFT6BUAYc5dyKYQX8uaMsZ/vEKZc= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-400-Fj2BjzH9NSeYMvbyBDjWaw-1; Wed, 12 Feb 2020 06:49:29 -0500 X-MC-Unique: Fj2BjzH9NSeYMvbyBDjWaw-1 Received: by mail-wr1-f70.google.com with SMTP id z15so724207wrw.0 for ; Wed, 12 Feb 2020 03:49:29 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=JnelCP0BeqCKzB5HUK/Y879g+TjBn3kcCBi0brqpess=; b=X4nWp7X3CgQGqee57oMUUtUDm7IpsAWHapAAqfx477TfMZUv8qXSypawihZHHD+/qE n4SNXju2kwV4Ih5DTbIeBZ5ZOFYTr8PkTCmrPyRGCLBfhm4EZSx9DvV9ds1dgMhzxb+B JlEPnF5btGVHV2pLLX6e+0bjwy+cCTdIOgbRUd037bbfLHytEDXhPhyXSDlA0cUM0rDm oUscpyRyykUpRhLdyQK4juGVosaylhXwvSmQN3Wo0B6V83HiZcus1kyG+jvQWIOY+6dH XQTRIOZ312aO85fTNryhWTXsnKIvFO9UWMI7EiwmDdBEFnQZUlMm/OYMvtOw0xBUqRN8 +35Q== X-Gm-Message-State: APjAAAUjB92iQjXugMlBObkjPBO6UvpHLjcuj+WwdtFRXKRo6F+0mJy+ VMOJEaFe2CN0kLDV/8Zmr1rkOog+rxpPlEgjgryBMO+AMUMHqImlI0gEyLQ+OzIFandjrFyfTT7 /YbmeIs6yodCh X-Received: by 2002:a5d:4e91:: with SMTP id e17mr14147897wru.233.1581508168428; Wed, 12 Feb 2020 03:49:28 -0800 (PST) X-Google-Smtp-Source: APXvYqzeI48yUIlfasjczSuSSNgiv99/Z58AUwqGUMZMkVGFbIwyZAB7OqaXkxrlubZ3ZIBd8MW2nw== X-Received: by 2002:a5d:4e91:: with SMTP id e17mr14147880wru.233.1581508168206; Wed, 12 Feb 2020 03:49:28 -0800 (PST) Received: from ?IPv6:2001:b07:6468:f312:652c:29a6:517b:66d9? ([2001:b07:6468:f312:652c:29a6:517b:66d9]) by smtp.gmail.com with ESMTPSA id m9sm318916wrx.55.2020.02.12.03.49.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 12 Feb 2020 03:49:27 -0800 (PST) Subject: Re: [PATCH] KVM: x86: remove duplicated KVM_REQ_EVENT request To: Vitaly Kuznetsov , linmiaohe Cc: "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , "rkrcmar@redhat.com" , "sean.j.christopherson@intel.com" , "wanpengli@tencent.com" , "jmattson@google.com" , "joro@8bytes.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "hpa@zytor.com" References: <87h802g42r.fsf@vitty.brq.redhat.com> From: Paolo Bonzini Message-ID: <1386ffda-37c7-aef6-2ff4-f2b753b51af1@redhat.com> Date: Wed, 12 Feb 2020 12:49:33 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <87h802g42r.fsf@vitty.brq.redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 07/02/20 10:05, Vitaly Kuznetsov wrote: > kvm_make_request() from kvm_set_rflags() as it is not an obvious > behavior (e.g. why kvm_rip_write() doens't do that and > kvm_set_rflags() does ?) Because writing RFLAGS can change IF and therefore cause an interrupt to be injected. Paolo