From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.codeaurora.org by pdx-caf-mail.web.codeaurora.org (Dovecot) with LMTP id jXndMMapGlvCSQAAmS7hNA ; Fri, 08 Jun 2018 16:07:37 +0000 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 312D7607DC; Fri, 8 Jun 2018 16:07:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by smtp.codeaurora.org (Postfix) with ESMTP id B8BD0601B4; Fri, 8 Jun 2018 16:07:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B8BD0601B4 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752863AbeFHQHe (ORCPT + 25 others); Fri, 8 Jun 2018 12:07:34 -0400 Received: from mga06.intel.com ([134.134.136.31]:4564 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751241AbeFHQHd (ORCPT ); Fri, 8 Jun 2018 12:07:33 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Jun 2018 09:07:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,490,1520924400"; d="scan'208";a="235831247" Received: from agluck-desk.sc.intel.com ([10.3.52.160]) by fmsmga006.fm.intel.com with ESMTP; 08 Jun 2018 09:07:32 -0700 From: Tony Luck To: Thomas Gleixner Cc: Tony Luck , Fenghua Yu , Vikas Shivappa , x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] x86/intel_rdt: Enable CMT and MBM on new Skylake stepping Date: Fri, 8 Jun 2018 09:07:32 -0700 Message-Id: <20180608160732.9842-1-tony.luck@intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org New stepping of Skylake has fixes for cache occupancy and memory bandwidth monitoring. Update the code to enable these by default on newer steppings. Cc: stable@vger.kernel.org # v4.14 Signed-off-by: Tony Luck --- arch/x86/kernel/cpu/intel_rdt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/intel_rdt.c index 24bfa63e86cf..ec4754f81cbd 100644 --- a/arch/x86/kernel/cpu/intel_rdt.c +++ b/arch/x86/kernel/cpu/intel_rdt.c @@ -845,6 +845,8 @@ static __init void rdt_quirks(void) case INTEL_FAM6_SKYLAKE_X: if (boot_cpu_data.x86_stepping <= 4) set_rdt_options("!cmt,!mbmtotal,!mbmlocal,!l3cat"); + else + set_rdt_options("!l3cat"); } } -- 2.17.0