Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751306AbVJQTrz (ORCPT ); Mon, 17 Oct 2005 15:47:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751320AbVJQTrz (ORCPT ); Mon, 17 Oct 2005 15:47:55 -0400 Received: from serv01.siteground.net ([70.85.91.68]:54430 "EHLO serv01.siteground.net") by vger.kernel.org with ESMTP id S1751306AbVJQTry (ORCPT ); Mon, 17 Oct 2005 15:47:54 -0400 Date: Mon, 17 Oct 2005 12:47:43 -0700 From: Ravikiran G Thirumalai To: Andi Kleen Cc: Linus Torvalds , Muli Ben-Yehuda , discuss@x86-64.org, Andrew Morton , linux-kernel@vger.kernel.org, tglx@linutronix.de, shai@scalex86.org, clameter@engr.sgi.com, muli@il.ibm.com, jdmason@us.ibm.com Subject: Re: [discuss] Re: x86_64: 2.6.14-rc4 swiotlb broken Message-ID: <20051017194743.GA8932@localhost.localdomain> References: <20051017093654.GA7652@localhost.localdomain> <20051017184523.GB26239@granada.merseine.nu> <200510172109.54066.ak@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200510172109.54066.ak@suse.de> User-Agent: Mutt/1.4.2.1i X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - serv01.siteground.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - scalex86.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1234 Lines: 27 On Mon, Oct 17, 2005 at 09:09:52PM +0200, Andi Kleen wrote: > On Monday 17 October 2005 21:04, Linus Torvalds wrote: > > > So the only thing that worried me (and made me ask whether there might be > > machines where it doesn't work) is if some machines might have their high > > memory (or no memory at all) on NODE(0). It does sound unlikely, but I > > simple don't know what kind of strange NUMA configs there are out there. > > It could happen in VirtualIron (they seem to interleave node 0 over many nodes > to get equal use of lowmem in 32bit NUMA), but should not in x86-64.. > > > And I'm definitely only interested in machines that are out there, not > > some theoretical issues. > > According to Alex W. it will break their sx1000 IA64 boxen. sx1000 is probably already broken; Unless the last pgdat happens to be the memory only node with 0-4G? How about the fix I suggested which would iterate across all nodes until it found the right node for swiotlb? Thanks, Kiran - 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/