Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752005AbYKRAME (ORCPT ); Mon, 17 Nov 2008 19:12:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752649AbYKRALq (ORCPT ); Mon, 17 Nov 2008 19:11:46 -0500 Received: from ozlabs.org ([203.10.76.45]:43299 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752553AbYKRALp (ORCPT ); Mon, 17 Nov 2008 19:11:45 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18722.2107.970887.768477@cargo.ozlabs.ibm.com> Date: Tue, 18 Nov 2008 11:11:39 +1100 From: Paul Mackerras To: Linus Torvalds Cc: Benjamin Herrenschmidt , Steven Rostedt , LKML , linuxppc-dev@ozlabs.org, Andrew Morton , Ingo Molnar , Thomas Gleixner Subject: Re: Large stack usage in fs code (especially for PPC64) In-Reply-To: References: <1226963596.7178.254.camel@pasglop> X-Mailer: VM 8.0.9 under Emacs 22.2.1 (i486-pc-linux-gnu) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1239 Lines: 31 Linus Torvalds writes: > > > It's made worse by the fact that they > > > also have horribly bad TLB fills on their broken CPU's, and years and > > > years of telling people that the MMU on ppc's are sh*t has only been > > > reacted to with "talk to the hand, we know better". > > > > Who are you talking about here precisely ? I don't think either Paul or > > I every said something nearly around those lines ... Oh well. > > Every single time I've complained about it, somebody from IBM has said ".. > but but AIX". > > This time it was Paul. Sometimes it has been software people who agree, Maybe I wasn't clear. I was reporting the reaction I get from the hardware designers, who often like to push off the hard problems to software to fix. Keep flaming, by the way. It provides me with some amount of assistance in my quest to get the hardware designers to do better. ;) Also, you didn't respond to my comments about the purely software benefits of a larger page size. Paul. -- 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/