From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758579Ab2EYUSh (ORCPT ); Fri, 25 May 2012 16:18:37 -0400 Received: from terminus.zytor.com ([198.137.202.10]:43254 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750749Ab2EYUSe (ORCPT ); Fri, 25 May 2012 16:18:34 -0400 Message-ID: <4FBFE90A.5090407@zytor.com> Date: Fri, 25 May 2012 13:18:18 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Bjorn Helgaas CC: Yinghai Lu , Linus Torvalds , Steven Newbury , Andrew Morton , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first References: <1337754877-19759-1-git-send-email-yinghai@kernel.org> <1337754877-19759-3-git-send-email-yinghai@kernel.org> <20120525043651.GA1391@google.com> <20120525193716.GA8817@google.com> In-Reply-To: <20120525193716.GA8817@google.com> X-Enigmail-Version: 1.4.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/25/2012 12:37 PM, Bjorn Helgaas wrote: > > That's goofy. You're proposing to make only x86_64 and x86-PAE try to put > 64-bit BARs above 4GB. Why should this be specific to x86? I acknowledge > that there's risk in doing this, but if it's a good idea for x86_64, it > should also be a good idea for other 64-bit architectures. > And so it is (assuming, of course, that we can address that memory.) -hpa