Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751962AbaBETXe (ORCPT ); Wed, 5 Feb 2014 14:23:34 -0500 Received: from fbr04.mfg.siteprotect.com ([64.26.60.139]:40670 "EHLO fbr04.mfg.siteprotect.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751426AbaBETXc (ORCPT ); Wed, 5 Feb 2014 14:23:32 -0500 X-Greylist: delayed 584 seconds by postgrey-1.27 at vger.kernel.org; Wed, 05 Feb 2014 14:23:32 EST Date: Wed, 5 Feb 2014 14:16:43 -0500 (EST) From: Vince Weaver X-X-Sender: vince@pianoman.cluster.toy To: Peter Zijlstra cc: junk@eslaf.co.uk, alan@lxorguk.ukuu.org.uk, Ingo Molnar , Stephane Eranian , linux-kernel@vger.kernel.org Subject: Re: [PATCH] perf,x86,p6: Add userspace RDPMC quirk for P6 In-Reply-To: <20140205102718.GF3229@twins.programming.kicks-ass.net> Message-ID: References: <20140205102718.GF3229@twins.programming.kicks-ass.net> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-CTCH-Spam: Unknown X-CTCH-RefID: str=0001.0A020208.52F28D6B.016C,ss=1,re=0.000,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 5 Feb 2014, Peter Zijlstra wrote: > P6 class machines can die hard when PCE gets enabled due to CPU > errata. The safe way it so disable it by default and keep it disabled. > > See errata 26: so you take an errata applicable to a subset of Pentium Pro steppings and apply it to the whole p6 line (which includes the whole way up to Pentium III)? Or am I missing something in the documentation you link to? Vince -- 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/