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=-5.3 required=3.0 tests=BAYES_00, 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 29603C433B4 for ; Tue, 18 May 2021 15:58:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0397E6117A for ; Tue, 18 May 2021 15:58:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350514AbhERQAA (ORCPT ); Tue, 18 May 2021 12:00:00 -0400 Received: from mga12.intel.com ([192.55.52.136]:59296 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350480AbhERQAA (ORCPT ); Tue, 18 May 2021 12:00:00 -0400 IronPort-SDR: I4icwcyBGH0WRQL2wJT/hr+E/BqQburqg0kCTm2+SCNop0o0zioiNglfvdbfrAJCPf6e+QDgW1 5am3FCcibibA== X-IronPort-AV: E=McAfee;i="6200,9189,9988"; a="180350377" X-IronPort-AV: E=Sophos;i="5.82,310,1613462400"; d="scan'208";a="180350377" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2021 08:58:42 -0700 IronPort-SDR: gwcrRvapQ5urxi4Wy2gp2NUyzC3i98kMC24kJg9A3btzEjKOHnjQ0KFqSEvL84tmVWOywxCo4V LeacXH6R2Pnw== X-IronPort-AV: E=Sophos;i="5.82,310,1613462400"; d="scan'208";a="439501389" Received: from msaber-mobl.amr.corp.intel.com (HELO [10.209.65.183]) ([10.209.65.183]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2021 08:58:41 -0700 Subject: Re: [PATCH v6 07/16] KVM: x86/pmu: Reprogram PEBS event to emulate guest PEBS counter To: "Xu, Like" , Peter Zijlstra Cc: Like Xu , Paolo Bonzini , Borislav Petkov , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , weijiang.yang@intel.com, Kan Liang , wei.w.wang@intel.com, eranian@google.com, liuxiangdong5@huawei.com, linux-kernel@vger.kernel.org, x86@kernel.org, kvm@vger.kernel.org References: <20210511024214.280733-1-like.xu@linux.intel.com> <20210511024214.280733-8-like.xu@linux.intel.com> <852ab586-2438-c7fc-c41d-0862e2f1b7ca@intel.com> From: Andi Kleen Message-ID: <052e8584-fbc6-ddc7-c873-f46168aae63b@linux.intel.com> Date: Tue, 18 May 2021 08:58:40 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <852ab586-2438-c7fc-c41d-0862e2f1b7ca@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org > > By "precdist", do you mean the"Precise Distribution of Instructions > Retired (PDIR) Facility"? This was referring to perf's precise_ip field > > The SDM says Ice Lake Microarchitecture does support PEBS-PDIR on > IA32_FIXED0 only. > And this patch kit enables it in the patch 0011, please take a look. > > Or do I miss something about precdist on ICL ? On Icelake everything is fine It just would need changes on other CPUs, but that can be done later. -Andi