From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750876AbVIWRhv (ORCPT ); Fri, 23 Sep 2005 13:37:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750844AbVIWRhu (ORCPT ); Fri, 23 Sep 2005 13:37:50 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:53959 "EHLO e36.co.us.ibm.com") by vger.kernel.org with ESMTP id S1750836AbVIWRhu (ORCPT ); Fri, 23 Sep 2005 13:37:50 -0400 Date: Fri, 23 Sep 2005 10:37:43 -0700 From: Nishanth Aravamudan To: Sean Bruno Cc: karim@opersys.com, ak@suse.de, LKML Subject: Re: The system works (2.6.14-rc2): functional k8n-dl Message-ID: <20050923173743.GJ5910@us.ibm.com> References: <20050922155254.GE5910@us.ibm.com> <43332254.1040603@opersys.com> <1127495296.25701.15.camel@oscar> <20050923172014.GH5910@us.ibm.com> <1127496135.25701.22.camel@oscar> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1127496135.25701.22.camel@oscar> X-Operating-System: Linux 2.6.14-rc2 (x86_64) User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 23.09.2005 [10:22:15 -0700], Sean Bruno wrote: > On Fri, 2005-09-23 at 10:20 -0700, Nishanth Aravamudan wrote: > > On 23.09.2005 [10:08:16 -0700], Sean Bruno wrote: > > > On Thu, 2005-09-22 at 17:29 -0400, Karim Yaghmour wrote: > > > > Nish, > > > > > > > > OK, I can confirm that with version 1006 of the BIOS it works flawlessly > > > > with Linux. I was able to install full FC4 and boot without a problem > > > > even with the SATA disk plugged to the nVidia controller (reading the > > > > archives you will see that the nVidia SATA controller is something I > > > > was simply unable to get working.) I didn't need to recompile anything. > > > > The kernel that came with FC4 worked just fine. > > > I can also confirm these findings. However, I still have to boot the > > > kernel with iommu=memaper=3 in order to get the system to work > > > properly. > > > > You have 6GB of RAM, right? That must be the difference, as I only have > > 2 GB (and the IOMMU is used when you have more than 3 GB according to > > menuconfig?). > > > Yes 6GB of ram. Odd, any ideas of why that is? What happens when you don't pass the param? (sorry, haven't followed all the k8n-dl threads :) A couple of points. Noticed that param is not documented in Documentation/kernel-parameters.txt; care to make up a patch? Also, after your message, I did a quick grep through my dmesg and see the following: [ 0.000000] Checking aperture... [ 0.000000] CPU 0: aperture @ 4000000 size 32 MB [ 0.000000] Aperture from northbridge cpu 0 too small (32 MB) [ 0.000000] No AGP bridge found [ 0.000000] Your BIOS doesn't leave a aperture memory hole [ 0.000000] Please enable the IOMMU option in the BIOS setup [ 0.000000] This costs you 64 MB of RAM [ 0.000000] Mapping aperture over 65536 KB of RAM @ 4000000 Is the aperture memory hole necessary even without AGP? Does the ASUS BIOS provide a means to change the aperture size (I didn't see one when I looked, but I could easily have missed it). [ 45.703183] PCI: Using ACPI for IRQ routing [ 45.703194] PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report [ 45.703286] PCI-DMA: Disabling AGP. [ 45.703295] PCI-DMA: More than 4GB of RAM and no IOMMU [ 45.703296] PCI-DMA: 32bit PCI IO may malfunction.<6>PCI-DMA: Disabling IOMMU. I am not sure why the kernel thinks I have more than 4GB of RAM, when I have 2 GB. Seems like a bug? Looks like that "Disabling IOMMU" printk is b0rked...and why does it disable it if I don't have one? (according to 2 messages before that one?) Andi, do you have any input on this? /proc/meminfo: MemTotal: 1989424 kB MemFree: 32896 kB Buffers: 276924 kB Cached: 1013852 kB SwapCached: 0 kB Active: 1085736 kB Inactive: 510788 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 1989424 kB LowFree: 32896 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 24 kB Writeback: 0 kB Mapped: 355348 kB Slab: 340204 kB CommitLimit: 994712 kB Committed_AS: 432912 kB PageTables: 6792 kB VmallocTotal: 34359738367 kB VmallocUsed: 262572 kB VmallocChunk: 34359475707 kB HugePages_Total: 0 HugePages_Free: 0 Hugepagesize: 2048 kB Thanks, Nish