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 A906BC433ED for ; Tue, 11 May 2021 02:43:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7637861621 for ; Tue, 11 May 2021 02:43:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230027AbhEKCoM (ORCPT ); Mon, 10 May 2021 22:44:12 -0400 Received: from mga03.intel.com ([134.134.136.65]:7532 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229736AbhEKCoI (ORCPT ); Mon, 10 May 2021 22:44:08 -0400 IronPort-SDR: 6qQcynzDX3TvTIyIX1vV4daM+qtL4XQl+DUaalGr3PEPVQyyFEGXrJJp484AdC/cqMEPMtcFJ+ hvevsuQZ71Jg== X-IronPort-AV: E=McAfee;i="6200,9189,9980"; a="199391169" X-IronPort-AV: E=Sophos;i="5.82,290,1613462400"; d="scan'208";a="199391169" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 May 2021 19:43:02 -0700 IronPort-SDR: cANaMB5eRdMayD4i2mA06SvvDqq8xbutLBgNJ8i2HhsOfrxMwbjYUa/7yG1PTIj8ad92zPfpUu Z9TQLANSXbkg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,290,1613462400"; d="scan'208";a="468591571" Received: from clx-ap-likexu.sh.intel.com ([10.239.48.108]) by fmsmga002.fm.intel.com with ESMTP; 10 May 2021 19:42:59 -0700 From: Like Xu To: Peter Zijlstra , Paolo Bonzini Cc: Borislav Petkov , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , weijiang.yang@intel.com, Kan Liang , ak@linux.intel.com, wei.w.wang@intel.com, eranian@google.com, liuxiangdong5@huawei.com, linux-kernel@vger.kernel.org, x86@kernel.org, kvm@vger.kernel.org, Like Xu Subject: [PATCH v6 01/16] perf/x86/intel: Add EPT-Friendly PEBS for Ice Lake Server Date: Tue, 11 May 2021 10:41:59 +0800 Message-Id: <20210511024214.280733-2-like.xu@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210511024214.280733-1-like.xu@linux.intel.com> References: <20210511024214.280733-1-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 The new hardware facility supporting guest PEBS is only available on Intel Ice Lake Server platforms for now. KVM will check this field through perf_get_x86_pmu_capability() instead of hard coding the cpu models in the KVM code. If it is supported, the guest PBES capability will be exposed to the guest. Signed-off-by: Like Xu --- arch/x86/events/core.c | 1 + arch/x86/events/intel/core.c | 1 + arch/x86/events/perf_event.h | 3 ++- arch/x86/include/asm/perf_event.h | 1 + 4 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 8e509325c2c3..ccbe5b239c22 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -2958,5 +2958,6 @@ void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap) cap->bit_width_fixed = x86_pmu.cntval_bits; cap->events_mask = (unsigned int)x86_pmu.events_maskl; cap->events_mask_len = x86_pmu.events_mask_len; + cap->pebs_vmx = x86_pmu.pebs_vmx; } EXPORT_SYMBOL_GPL(perf_get_x86_pmu_capability); diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 2521d03de5e0..b6e45ee10e16 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -6028,6 +6028,7 @@ __init int intel_pmu_init(void) case INTEL_FAM6_ICELAKE_X: case INTEL_FAM6_ICELAKE_D: + x86_pmu.pebs_vmx = 1; pmem = true; fallthrough; case INTEL_FAM6_ICELAKE_L: diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index 27fa85e7d4fd..6a0f768c5330 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -796,7 +796,8 @@ struct x86_pmu { pebs_prec_dist :1, pebs_no_tlb :1, pebs_no_isolation :1, - pebs_block :1; + pebs_block :1, + pebs_vmx :1; int pebs_record_size; int pebs_buffer_size; int max_pebs_events; diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h index 544f41a179fb..6a6e707905be 100644 --- a/arch/x86/include/asm/perf_event.h +++ b/arch/x86/include/asm/perf_event.h @@ -192,6 +192,7 @@ struct x86_pmu_capability { int bit_width_fixed; unsigned int events_mask; int events_mask_len; + unsigned int pebs_vmx :1; }; /* -- 2.31.1