Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754357Ab3HECss (ORCPT ); Sun, 4 Aug 2013 22:48:48 -0400 Received: from mga14.intel.com ([143.182.124.37]:22123 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754199Ab3HECsr (ORCPT ); Sun, 4 Aug 2013 22:48:47 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,815,1367996400"; d="scan'208";a="277659536" Message-ID: <51FF123C.8010208@intel.com> Date: Mon, 05 Aug 2013 10:47:24 +0800 From: Alex Shi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: Borislav Petkov , "H. Peter Anvin" CC: Ilari Stenroth , linux-kernel@vger.kernel.org Subject: Re: arch/x86/kernel/cpu/intel.c needs an update for Haswell? References: <20130730193530.GB23299@pd.tnic> <20130730195402.GD23299@pd.tnic> <51FA220B.5070307@intel.com> <51FA256C.80001@intel.com> In-Reply-To: <51FA256C.80001@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 933 Lines: 25 On 08/01/2013 05:07 PM, Alex Shi wrote: > From 6fb21a9ce475cfc6c7c39bdfd3d9422be24cdb74 Mon Sep 17 00:00:00 2001 > From: Alex Shi > Date: Wed, 31 Jul 2013 16:28:42 +0800 > Subject: [PATCH 1/2] x86/tlb_flushall_shift: add Ivybridge EP CPU support > > Tested with munmap.c on Ivybridge EP 2S machine, the best shift value is > 2, that means when the tlb flush entries less than 64, single invlpg has > performance benefit on this machine. > The testcase come from: https://lkml.org/lkml/2012/5/17/59 > Results show it has about 5% to 30% performance increase. > > Signed-off-by: Alex Shi > --- Any comments are appreciated! -- Thanks Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/