Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752098AbYKRLpF (ORCPT ); Tue, 18 Nov 2008 06:45:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752568AbYKRLox (ORCPT ); Tue, 18 Nov 2008 06:44:53 -0500 Received: from ozlabs.org ([203.10.76.45]:39853 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752607AbYKRLow (ORCPT ); Tue, 18 Nov 2008 06:44:52 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18722.43694.861169.946743@cargo.ozlabs.ibm.com> Date: Tue, 18 Nov 2008 22:44:46 +1100 From: Paul Mackerras To: Nick Piggin Cc: Linus Torvalds , 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: <200811182124.33141.nickpiggin@yahoo.com.au> References: <18722.2107.970887.768477@cargo.ozlabs.ibm.com> <200811182124.33141.nickpiggin@yahoo.com.au> 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: 504 Lines: 14 Nick Piggin writes: > It's much harder to do this with powerpc I think because they would need > to calculate 8 hashes and touch 8 cachelines to prefill 8 translations, > wouldn't they? Yeah, the hashed page table sucks. Film at 11, as they say. :) 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/