Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030283AbWJRVPP (ORCPT ); Wed, 18 Oct 2006 17:15:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030284AbWJRVPP (ORCPT ); Wed, 18 Oct 2006 17:15:15 -0400 Received: from mtagate5.uk.ibm.com ([195.212.29.138]:2275 "EHLO mtagate5.uk.ibm.com") by vger.kernel.org with ESMTP id S1030283AbWJRVPM (ORCPT ); Wed, 18 Oct 2006 17:15:12 -0400 Date: Wed, 18 Oct 2006 23:15:09 +0200 From: Muli Ben-Yehuda To: Sebastian Biallas Cc: linux-kernel@vger.kernel.org, Andi Kleen Subject: Re: PCI-DMA: Disabling IOMMU Message-ID: <20061018211509.GB4582@rhun.haifa.ibm.com> References: <45364248.2020901@biallas.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45364248.2020901@biallas.net> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1313 Lines: 30 On Wed, Oct 18, 2006 at 05:03:36PM +0200, Sebastian Biallas wrote: > Should I worry about this IOMMU-disabling? All other Linux/IOMMU stuff I > found had AGP or BIOS messages nearby, but I only get this single > "PCI-DMA: Disabling IOMMU" line, without any hint. No, it's fine. Just a badly worded information message. Andi, how about something like this? Print a less alarming information message when we don't use GART Signed-off-by: Muli Ben-Yehuda diff -r 3f7bc84201e7 arch/x86_64/kernel/pci-gart.c --- a/arch/x86_64/kernel/pci-gart.c Wed Oct 18 09:14:19 2006 +0200 +++ b/arch/x86_64/kernel/pci-gart.c Wed Oct 18 23:13:05 2006 +0200 @@ -601,7 +601,7 @@ void __init gart_iommu_init(void) (!force_iommu && end_pfn <= MAX_DMA32_PFN) || !iommu_aperture || (no_agp && init_k8_gatt(&info) < 0)) { - printk(KERN_INFO "PCI-DMA: Disabling IOMMU.\n"); + printk(KERN_INFO "PCI-DMA: Not using GART IOMMU.\n"); if (end_pfn > MAX_DMA32_PFN) { printk(KERN_ERR "WARNING more than 4GB of memory " "but IOMMU not available.\n" - 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/