Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758084AbYCHBqH (ORCPT ); Fri, 7 Mar 2008 20:46:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751922AbYCHBp4 (ORCPT ); Fri, 7 Mar 2008 20:45:56 -0500 Received: from rv-out-0910.google.com ([209.85.198.184]:10073 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751628AbYCHBpz (ORCPT ); Fri, 7 Mar 2008 20:45:55 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=CTKeGGCSadw6vCVNf1X20BbGPJXXl8JpBkLJ/i5CKWa+W6Pr/B3nEhFGv/MTohsPMlcv/JPtU+pBDJGHMfE7qtEPHlX/TMvA9Zo5Qz/+tVH68fLHrgc2PZdk3pkqRcdmxPsSUO+7SuJwjtavhT+VDTmktAyfh+SPVdY1TE9Pmyo= Message-ID: <86802c440803071745l33584535jb998b262e59a915a@mail.gmail.com> Date: Fri, 7 Mar 2008 17:45:54 -0800 From: "Yinghai Lu" To: "Andi Kleen" Subject: Re: [PATCH] x86_64: reserve dma32 early for gart Cc: "Ingo Molnar" , "Andrew Morton" , "Thomas Gleixner" , "H. Peter Anvin" , "kernel list" In-Reply-To: <200803080020.50474.ak@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <86802c440803071502o50a06199i6afeb5996f207c6d@mail.gmail.com> <200803080020.50474.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 886 Lines: 27 On Fri, Mar 7, 2008 at 3:20 PM, Andi Kleen wrote: > On Saturday 08 March 2008 00:02:50 Yinghai Lu wrote: > > > > > > > > >solution will be: > >1. make memmap allocation get memory above 4G... > >2. reserve some dma32 range early before we try to set up memmap for all. > >and release that before pci_iommu_alloc, so gart or swiotlb could get some > >range under 4g limit for sure. > > Funny we had (1) before vmemmap for some time, but it looks like > that regressed with vmemmap Anyways I think (1) alone should be enough, is (2) > really needed? even vmemmap is disabled, still need (2). (1) is not there yet. YH -- 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/