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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,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 A7C14C433E6 for ; Tue, 26 Jan 2021 16:18:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C1F92073C for ; Tue, 26 Jan 2021 16:18:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391166AbhAZQSc (ORCPT ); Tue, 26 Jan 2021 11:18:32 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:47913 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391037AbhAZJ3Y (ORCPT ); Tue, 26 Jan 2021 04:29:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611653278; 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=TJqmWe0B1zwIrZ9/DXGf/qzkCZYW3LkB48QuI/Vyvzk=; b=HRRtZ4K4sE1bFnn7yM5x1XSy1waFyHjLyu2DHKGqTgzp2p0FV575LJav8fNNgPdf76IRze 02UCwyURz650XGqdSAi+k21Khk3eMUj+cewCn9sLpK+6vDpt1Gx6GZHnV7o4mZMHyUx7fx 3gPV2hr5MDpfVFiU1ZeNUv/oGzmDXNk= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-69-YaTLfWUyMXeY-w1l3JX2ew-1; Tue, 26 Jan 2021 04:27:56 -0500 X-MC-Unique: YaTLfWUyMXeY-w1l3JX2ew-1 Received: by mail-wr1-f71.google.com with SMTP id q6so240644wro.4 for ; Tue, 26 Jan 2021 01:27:56 -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=TJqmWe0B1zwIrZ9/DXGf/qzkCZYW3LkB48QuI/Vyvzk=; b=qJbCqYM0O1eH3VmyhPafVzcstW7RktyyFDP+1svwbwOQxu69JCu+P5NmvhTpTGNLv9 9yeXLEl/m4iQPxx2jMbDxeQ4SY4EQxwrv19nrCPE5IsrKvaKU68FRvv33a0F7vGEQ1pZ dOW4ogrcQdYAaeVaHkqW6CiLGUrT3kmWOR/EBJOr/pf7l/RzzwGNU8qXYPfqPySwzFXI AwrQq1o5BUVbe0SGlHVAmdYsUh0NuoNU8ZR+PoMoGnXARUY2SVZu10CI5AkmX+my5fqJ PSRfPtgSrbJt3sH3+cmthK+69XoNJxBDl3nPnCEexFCr+R73SY380By5jHCwktFLLqae kG8w== X-Gm-Message-State: AOAM532hTC8oip8Vl9CpGqVRx9Hcqgpcuh1Uj5URl9DjPsFOWAueeYPR 35yX6GwqdAH7RlzwSX9crUkgW4tvZ8Xlm4uznC2ifKo5u1YKuNxfNeNrm8YUAQZDgQfjFWWV8qZ 9tiVk/c34yLUJjzVPijUHkC6IZ9aOr2ArvHCgcYggnEKgD8lzHBmXDqU/QuwMcuuQUX4QFK8dyo YK X-Received: by 2002:adf:d187:: with SMTP id v7mr5085186wrc.50.1611653275001; Tue, 26 Jan 2021 01:27:55 -0800 (PST) X-Google-Smtp-Source: ABdhPJxwJZvz1tWGNB31K2PdD/RQMxJIfSfaRIG9JEMFcujSvclTmPqLN1LlqyQzG38ZcxH8Ux9nVw== X-Received: by 2002:adf:d187:: with SMTP id v7mr5085155wrc.50.1611653274835; Tue, 26 Jan 2021 01:27:54 -0800 (PST) Received: from ?IPv6:2001:b07:6468:f312:c8dd:75d4:99ab:290a? ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id j2sm24648989wrh.78.2021.01.26.01.27.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Jan 2021 01:27:54 -0800 (PST) Subject: Re: [RESEND v13 07/10] KVM: vmx/pmu: Reduce the overhead of LBR pass-through or cancellation To: Like Xu , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel Cc: Ingo Molnar , Thomas Gleixner , Borislav Petkov , "H . Peter Anvin" , ak@linux.intel.com, wei.w.wang@intel.com, kan.liang@intel.com, x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210108013704.134985-1-like.xu@linux.intel.com> <20210108013704.134985-8-like.xu@linux.intel.com> From: Paolo Bonzini Message-ID: <59d947ae-3f6f-2efa-0d2d-3b130cb0bb5c@redhat.com> Date: Tue, 26 Jan 2021 10:27:52 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20210108013704.134985-8-like.xu@linux.intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/01/21 02:37, Like Xu wrote: > + > + /* A flag to reduce the overhead of LBR pass-through or cancellation. */ > + bool already_passthrough; /* True if LBRs are marked as not intercepted in the MSR bitmap */ bool msr_passthrough; > }; > > /* >