From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261706AbTILOYO (ORCPT ); Fri, 12 Sep 2003 10:24:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261711AbTILOYO (ORCPT ); Fri, 12 Sep 2003 10:24:14 -0400 Received: from mail.cpt.sahara.co.za ([196.41.29.142]:4090 "EHLO workshop.saharact.lan") by vger.kernel.org with ESMTP id S261706AbTILOYN (ORCPT ); Fri, 12 Sep 2003 10:24:13 -0400 Subject: RE: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata From: Martin Schlemmer To: richard.brunner@amd.com Cc: LKML , Chris Wright In-Reply-To: <99F2150714F93F448942F9A9F112634C0638B197@txexmtae.amd.com> References: <99F2150714F93F448942F9A9F112634C0638B197@txexmtae.amd.com> Content-Type: text/plain Message-Id: <1063376046.3376.188.camel@workshop.saharacpt.lan> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.4 Date: Fri, 12 Sep 2003 16:14:08 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2003-09-11 at 06:55, richard.brunner@amd.com wrote: > Jun, > > I have to agree with what Andi says. It is in a slow path, > and we want to guard against user programs that could hit it. > Making it conditional doesn't buy a lot and would cause lots of > re-validation of the patch that we would like > to avoid so we can get this in to the 2.6 kernel ASAP. > Don't worry! I am pretty certain the patch won't impact the > performance of the 2.6 kernel on processors from other vendors ;-) > Would be nice if somebody with more knowledge about all the benchmarks and a few non AMD processor machines could test to see if its really that non critical (*hint* *hint*). Yes, I am not a kernel dev, but I do know that one or two slowdowns in an already slow path is not that critical - problem now is just that 5 or 6 might be an issue =) Thanks, -- Martin Schlemmer