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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 289B2C433EF for ; Mon, 9 May 2022 23:58:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233362AbiEJAB6 (ORCPT ); Mon, 9 May 2022 20:01:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232632AbiEJABw (ORCPT ); Mon, 9 May 2022 20:01:52 -0400 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B878E2BD0EE for ; Mon, 9 May 2022 16:57:56 -0700 (PDT) Received: by mail-pj1-x102c.google.com with SMTP id cx11-20020a17090afd8b00b001d9fe5965b3so655445pjb.3 for ; Mon, 09 May 2022 16:57:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=CM1ZHXJBH+7WPe2guc79jxSpfRuS2k3X5i8S5q0s/Ic=; b=N9/pCRotE4fVphwsb4c28RWabUDzJPxC0pJGDYOqwmkWk7vLJLadD20owReFqiyZJ3 xy7jJLHxwjm55om+ejj2Jy5wcEDmWBpmmmx2fMG8x0gJKTzfAO78UwyWOsFyiaZIQcQu zxzdLtuag+Ze9QcKZZuq8SXX75fb12tc7KhOhgeh6PYZSpwv1jySnX1ypoHHjMwEfSCw otS81bq0ItHye82Ug0N5hayfgMQZYiO+AfEpsHf9fSSX5o4ff526Id5I1rPAeO7PRWft f6RqtzEAcWB+GISMPR425yMp1rZdNGnuPJfL2R7kHWlcaQpvBz6IeZNrQcd6rEgMf8Cj qchA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=CM1ZHXJBH+7WPe2guc79jxSpfRuS2k3X5i8S5q0s/Ic=; b=CyKxyJuiGldhPLvu7bigK/0+z4AWiQfFBF4aR/diBQapoWNRZKemy/32Z309iTKefr gR8RAGU15lIDaTSEsXh8S9owJkCHChn+s7GXOoK3FG4JEWM5jblHMWtfB4x6FCFmzEFJ dbL5LCmEJMjMJ88DPnaZf0jpgGTNmf6BIrtNwg13iqUQOAWa6zINUhhUAUZdnkb+uDPX c99UA0riht23UGbcc3qkJF59+GksUV1t4i/FsU+kz+piMEsZgJg39/tQoYBzcT6cyyRL 5YP21ubCPUzRoetXzdwoB8lSK7qvCnP/X0ycIsQD9H/1b74PFyAY4ZJijgrmfRrz/Ogh zh5w== X-Gm-Message-State: AOAM5310gHZJw0T0w8EWukKG8rbpGQ+mneY5f4zOoufXfy7y9Ip35YOf jck13wdyp2PvEdXOEkVcNorOQw== X-Google-Smtp-Source: ABdhPJxrApBPnduQGqK5wGTxrQqVQOaL8+bhBuKw1dE2FG7xBRVGHd2knlVaUqt4QXcjWickbHvnaw== X-Received: by 2002:a17:902:f789:b0:156:5f56:ddff with SMTP id q9-20020a170902f78900b001565f56ddffmr18504210pln.116.1652140676125; Mon, 09 May 2022 16:57:56 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id pt7-20020a17090b3d0700b001cd630f301fsm277263pjb.36.2022.05.09.16.57.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 May 2022 16:57:55 -0700 (PDT) Date: Mon, 9 May 2022 23:57:52 +0000 From: Sean Christopherson To: Wei Zhang Cc: Suleiman Souhlal , Sangwhan Moon , Ingo Molnar , Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] KVM: x86: Fix incorrect VM-exit profiling Message-ID: References: <20220412195846.3692374-1-zhanwei@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220412195846.3692374-1-zhanwei@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 12, 2022, Wei Zhang wrote: > The profile=kvm boot option has been useful because it provides a > convenient approach to profile VM exits. What exactly are you profiling? Where the guest executing at any given exit? Mostly out of curiosity, but also in the hope that we might be able to replace profiling with a dedicated KVM stat(s).