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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 5194CC6377D for ; Thu, 22 Jul 2021 13:08:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 271D561285 for ; Thu, 22 Jul 2021 13:08:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231925AbhGVM1p (ORCPT ); Thu, 22 Jul 2021 08:27:45 -0400 Received: from mga09.intel.com ([134.134.136.24]:2347 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230418AbhGVM1m (ORCPT ); Thu, 22 Jul 2021 08:27:42 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10052"; a="211641954" X-IronPort-AV: E=Sophos;i="5.84,261,1620716400"; d="scan'208";a="211641954" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jul 2021 06:08:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,261,1620716400"; d="scan'208";a="577228422" Received: from linux.intel.com ([10.54.29.200]) by fmsmga001.fm.intel.com with ESMTP; 22 Jul 2021 06:08:15 -0700 Received: from [10.212.167.204] (kliang2-MOBL.ccr.corp.intel.com [10.212.167.204]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by linux.intel.com (Postfix) with ESMTPS id 4183D5807B4; Thu, 22 Jul 2021 06:08:13 -0700 (PDT) Subject: Re: [PATCH V8 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS To: Liuxiangdong , lingshan.zhu@intel.com, like.xu.linux@gmail.com Cc: ak@linux.intel.com, boris.ostrvsky@oracle.com, bp@alien8.de, eranian@google.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, peterz@infradead.org, seanjc@google.com, vkuznets@redhat.com, wanpengli@tencent.com, wei.w.wang@intel.com, x86@kernel.org, Xiexiangyou , "Fangyi (Eric)" References: <20210716085325.10300-1-lingshan.zhu@intel.com> <60F96A3F.3030703@huawei.com> From: "Liang, Kan" Message-ID: <4e990190-069e-4769-b0be-7db7d721f8a6@linux.intel.com> Date: Thu, 22 Jul 2021 09:08:12 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <60F96A3F.3030703@huawei.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 7/22/2021 8:53 AM, Liuxiangdong wrote: > Hi，like and lingshan. > > We can use pebs on the Icelake by using "perf record -e $event:pp", but > how can we get all the supported $event for the Icelake? > Because it seems like that all the hardware event/software event/kernel > pmu event listed by "perf list" can use ":pp" without error. > > > By quering events list for Icelake("https://perfmon-events.intel.com/), > we can use "perf record -e cpu/event=0xXX,unask=0xXX/pp" > to enable sampling. There are some events with "PEBS： > [PreciseEventingIP]" in "Additional Info" column. Are they the only > supported > precise events? Do those events which have "PEBS:[NonPreciseEventingIP]" > in last column support PEBS? > Starts from Ice Lake, the extended PEBS feature is supported, which extend the PEBS for all counters and all performance monitoring events (both precise event and non-precise). You can sample any events with PEBS. For details, please refer to the 18.9.1 extended PEBS in the latest SDM vol3. Thanks, Kan