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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 83374C433E0 for ; Wed, 3 Mar 2021 18:11:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 48E0B64EE4 for ; Wed, 3 Mar 2021 18:11:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1574820AbhCCReT (ORCPT ); Wed, 3 Mar 2021 12:34:19 -0500 Received: from mga11.intel.com ([192.55.52.93]:43939 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237908AbhCCOHE (ORCPT ); Wed, 3 Mar 2021 09:07:04 -0500 IronPort-SDR: TB1/22L4gww7drh+3QrhGvHZjI1Sd5xQZkRJQNgK4zJ97In6n4VrBfmnOoe+hO9/0SNxyOi0wO c5R8oudgEgoA== X-IronPort-AV: E=McAfee;i="6000,8403,9911"; a="183818845" X-IronPort-AV: E=Sophos;i="5.81,220,1610438400"; d="scan'208";a="183818845" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Mar 2021 06:05:14 -0800 IronPort-SDR: +7ZcEdl+QxARo+SGBQqOeSXv5UVPx93AWt7Z3qxJ3EIfgrTlK/wpgOYQ2NwqGzRGpPUThui7fz VDthDZtMhEeQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,220,1610438400"; d="scan'208";a="399729274" Received: from clx-ap-likexu.sh.intel.com ([10.239.48.108]) by fmsmga008.fm.intel.com with ESMTP; 03 Mar 2021 06:05:09 -0800 From: Like Xu To: Peter Zijlstra , Paolo Bonzini , Sean Christopherson Cc: Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Kan Liang , Dave Hansen , wei.w.wang@intel.com, Borislav Petkov , kvm@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, Like Xu Subject: [PATCH v3 1/9] perf/x86/intel: Fix a comment about guest LBR support Date: Wed, 3 Mar 2021 21:57:47 +0800 Message-Id: <20210303135756.1546253-2-like.xu@linux.intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210303135756.1546253-1-like.xu@linux.intel.com> References: <20210303135756.1546253-1-like.xu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Starting from v5.12, KVM reports guest LBR and extra_regs support when the host has relevant support. Cc: Peter Zijlstra Reviewed-by: Kan Liang Signed-off-by: Like Xu --- arch/x86/events/intel/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index d4569bfa83e3..a32acc7733a7 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -5565,7 +5565,7 @@ __init int intel_pmu_init(void) /* * Access LBR MSR may cause #GP under certain circumstances. - * E.g. KVM doesn't support LBR MSR + * E.g. KVM doesn't support LBR MSR before v5.12. * Check all LBT MSR here. * Disable LBR access if any LBR MSRs can not be accessed. */ -- 2.29.2