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=unavailable 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 887C0C4320A for ; Fri, 6 Aug 2021 07:29:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73A0E60F38 for ; Fri, 6 Aug 2021 07:29:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243657AbhHFH3e (ORCPT ); Fri, 6 Aug 2021 03:29:34 -0400 Received: from mga05.intel.com ([192.55.52.43]:16349 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243635AbhHFH3a (ORCPT ); Fri, 6 Aug 2021 03:29:30 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="299913733" X-IronPort-AV: E=Sophos;i="5.84,299,1620716400"; d="scan'208";a="299913733" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Aug 2021 00:29:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,299,1620716400"; d="scan'208";a="513102306" Received: from michael-optiplex-9020.sh.intel.com ([10.239.159.182]) by FMSMGA003.fm.intel.com with ESMTP; 06 Aug 2021 00:29:11 -0700 From: Yang Weijiang To: pbonzini@redhat.com, jmattson@google.com, seanjc@google.com, vkuznets@redhat.com, wei.w.wang@intel.com, like.xu.linux@gmail.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Like Xu , Peter Zijlstra , Yang Weijiang Subject: [PATCH v7 01/15] perf/x86/intel: Fix the comment about guest LBR support on KVM Date: Fri, 6 Aug 2021 15:42:11 +0800 Message-Id: <1628235745-26566-2-git-send-email-weijiang.yang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1628235745-26566-1-git-send-email-weijiang.yang@intel.com> References: <1628235745-26566-1-git-send-email-weijiang.yang@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Like Xu Starting from v5.12, KVM reports guest LBR and extra_regs support when the host has relevant support. Just delete this part of the comment and fix a typo incidentally. Cc: Peter Zijlstra Reviewed-by: Kan Liang Reviewed-by: Andi Kleen Signed-off-by: Like Xu Signed-off-by: Yang Weijiang --- arch/x86/events/intel/core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index fca7a6e2242f..a30b3ae09386 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -6264,8 +6264,7 @@ __init int intel_pmu_init(void) x86_pmu.intel_ctrl); /* * Access LBR MSR may cause #GP under certain circumstances. - * E.g. KVM doesn't support LBR MSR - * Check all LBT MSR here. + * Check all LBR MSR here. * Disable LBR access if any LBR MSRs can not be accessed. */ if (x86_pmu.lbr_tos && !check_msr(x86_pmu.lbr_tos, 0x3UL)) -- 2.25.1