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 3FACBC8300A for ; Thu, 30 Apr 2020 13:32:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1980F2074A for ; Thu, 30 Apr 2020 13:32:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="VvzkadaB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726924AbgD3NcX (ORCPT ); Thu, 30 Apr 2020 09:32:23 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:21524 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726692AbgD3NcW (ORCPT ); Thu, 30 Apr 2020 09:32:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588253541; 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=n+aTxk90D7+j/ZxikiZm7htr7ihgz4RE8XZxOaPVLGY=; b=VvzkadaBT+qn7TSfrLnw0ja+C+Zg/U+re4yRmexhPHXN4FPLB6KTtnM9J3MDyM7Ac0LCNO QEzB3Tym0WQjGwE8H+Ib422K2AXAYtATfOFpQ94/uhpRUCeTSvSkoIrkCSIqF89Y6+eZD0 WK4NGETX0aUnv+SkAMq/YhCBeEFEbSI= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-427-ArhEU26BO125W0CCvV0s8A-1; Thu, 30 Apr 2020 09:32:19 -0400 X-MC-Unique: ArhEU26BO125W0CCvV0s8A-1 Received: by mail-wm1-f72.google.com with SMTP id w2so858255wmc.3 for ; Thu, 30 Apr 2020 06:32:19 -0700 (PDT) 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=n+aTxk90D7+j/ZxikiZm7htr7ihgz4RE8XZxOaPVLGY=; b=GM+Gip8/Cs+H7bGjKg3x2fuFn25j7ak2CvyzAbmjvNUQddVZrSuxFdMJ4qD+zAMaav P355Pz0f2GlwqOa95NjakLeJ8BFBQLieCG9b3d/VIAcYLZTZh/OWME9OiNZwQTDdEwzZ 5LgJOJG5I3ObXBz9/XgQFdHU60CG1Aw+pALAMcexf/OKBqn3S/dsG3dSVB9WFHyAxaV7 Ut6xfx3HMqnix2DwRI1r5RI86EtlrGY12w9GrLOlLpz/Cl7K4SM6NSikX9Km7nJeNUcv EnXyLuwroWZfpPSDIEpR+eHx3fCML5PSRRywTTaKBYAVfai3KXz065JqF7lQ/rnotxLw Ntdg== X-Gm-Message-State: AGi0PubvanZMAYUVQL1/+W6ZM0pl3d4oZpXImfkqpTqbQYMYH6MJ716n 45KaZLWfKBhZgiCwUcjHp2gCJ+ZpWMdz1ovgM+NJs1rsa/CTmHnZo7w36TKJKuY4Bzj1Zra5vQF L/jSJ+TrcoiHTmasvpsDE8rjz X-Received: by 2002:a05:600c:210b:: with SMTP id u11mr3164041wml.133.1588253538321; Thu, 30 Apr 2020 06:32:18 -0700 (PDT) X-Google-Smtp-Source: APiQypLZwuDOopSSlnP92U8HygTNBmhhTn4PWDpNdu4eD+Pq/bkj6FBcQrWnMY670cOB2vZJ5e/KIA== X-Received: by 2002:a05:600c:210b:: with SMTP id u11mr3164026wml.133.1588253538120; Thu, 30 Apr 2020 06:32:18 -0700 (PDT) Received: from ?IPv6:2001:b07:6468:f312:ac19:d1fb:3f5f:d54f? ([2001:b07:6468:f312:ac19:d1fb:3f5f:d54f]) by smtp.gmail.com with ESMTPSA id s6sm12332481wmh.17.2020.04.30.06.32.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 30 Apr 2020 06:32:17 -0700 (PDT) Subject: Re: [PATCH v4 5/7] KVM: VMX: Optimize posted-interrupt delivery for timer fastpath To: Wanpeng Li , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Haiwei Li References: <1588055009-12677-1-git-send-email-wanpengli@tencent.com> <1588055009-12677-6-git-send-email-wanpengli@tencent.com> From: Paolo Bonzini Message-ID: <66fd6180-8e8b-1f9c-90f1-a55af1467388@redhat.com> Date: Thu, 30 Apr 2020 15:32:16 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <1588055009-12677-6-git-send-email-wanpengli@tencent.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 28/04/20 08:23, Wanpeng Li wrote: > - if (exit_fastpath == EXIT_FASTPATH_REENTER_GUEST && > - kvm_vcpu_exit_request(vcpu)) > - exit_fastpath = EXIT_FASTPATH_NOP; > + if (exit_fastpath == EXIT_FASTPATH_REENTER_GUEST) { > + if (!kvm_vcpu_exit_request(vcpu)) > + vmx_sync_pir_to_irr(vcpu); > + else > + exit_fastpath = EXIT_FASTPATH_NOP; > + } This part should be in patch 3; not a big deal, I can reorganize that myself. Paolo