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 85C35C2BA83 for ; Wed, 12 Feb 2020 11:49:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5DEB420848 for ; Wed, 12 Feb 2020 11:49:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="A9AsXbA1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728284AbgBLLtd (ORCPT ); Wed, 12 Feb 2020 06:49:33 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:50229 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727279AbgBLLtc (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=1581508171; 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=A9AsXbA1wEDr7zwDzw2Qa5q2DX8OkC+S/qG0kf8tCKFEmEBNXYx84+9cGSJU2jBgyr+t0m 65DoTRfX3zHaLAHXutJyBri6TOkIUeRPr1QAR5XVoPUBkNyyLbRnnkw5ex0pIZsm6lv6Oj T/RIT9zaY6GiYjjwv3EJjnWyaDzJVcQ= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-47-HoYJxD8BMWmGx4LcdzvKzQ-1; Wed, 12 Feb 2020 06:49:29 -0500 X-MC-Unique: HoYJxD8BMWmGx4LcdzvKzQ-1 Received: by mail-wr1-f69.google.com with SMTP id w6so704255wrm.16 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=FhC6joNu3bR+t/g8xXGlEzEmzssRG+oRY0EYZhLoURoAaP1MzmyJ4GI7/J+LoATWR/ aUemnLRL5efgVzw1LF1RxD3nrpgiTvFZGjEyEOisyx2yWk6ohx3TDqjL5VAk75+Nq4od T2q7n3BQ1ux/eLdpRFeUeMQJsURYl4LKIvs4lVyle4X9iSzco0rR6Uuor4xOqIyDh4wH /+KpJVEOMZevgelVmlV9zbfh+Bh3uO+UXbc90dC3fubSSfYIRyfQAV9mRNR+YwEgu1bP bRDub2AY78BhlxwLY03XELpkgzSrrIQzzQVLs3Z981Lh8N0LRmXo4VwQ9mWWDshRWF7L XdQA== X-Gm-Message-State: APjAAAVEX3Tw6xhp+7ObfOjm31+2oFgiXlQd+dgYsWbT788pEBRcZLEC aAPiJzuhT6Dvk/UYnH8h+VO71JDbw9CSq3LQ8E/XZ2RSJjJN2d86QY8YoFcFrLaVQXLfrywP348 K7kM3k3jbJOwZLJbi0sFK4crx X-Received: by 2002:a5d:4e91:: with SMTP id e17mr14147906wru.233.1581508168430; 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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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