From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756079AbYGIA7w (ORCPT ); Tue, 8 Jul 2008 20:59:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752902AbYGIA7o (ORCPT ); Tue, 8 Jul 2008 20:59:44 -0400 Received: from qw-out-2122.google.com ([74.125.92.25]:45123 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752824AbYGIA7n (ORCPT ); Tue, 8 Jul 2008 20:59:43 -0400 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=Tkro4RuvLGDejVMjyVwavr3E3T+nBvNYBPI4wWzRqHkyCeK15U5BJjngFx2MT49i7D 3kOOrznv5jmP/bq9kKhphS2O+UXrcC4+nC+W9xceBMKRgI0iHTiSjXe6+lngx+RcySLc m5wOMmE6irm4uJwGzcieSkCwPw9ib3d8fNIUM= Message-ID: <86802c440807081759i3baafa9bj7e8ff544a1a78fb9@mail.gmail.com> Date: Tue, 8 Jul 2008 17:59:39 -0700 From: "Yinghai Lu" To: "Suresh Siddha" Subject: Re: [patch] tip/x86_64: fix e820 merge issue which broke max_pfn_mapped Cc: mingo@elte.hu, hpa@zytor.com, tglx@linutronix.de, linux-kernel@vger.kernel.org In-Reply-To: <20080708230837.GD1678@linux-os.sc.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080708230837.GD1678@linux-os.sc.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 8, 2008 at 4:08 PM, Suresh Siddha wrote: > With out this 64bit tip/master doesn't boot using ACPI on my system. > --- > > max_pfn_mapped should include all e820 entries. > The direct mapping extends to max_pfn_mapped, so that we can directly access > apertures, ACPI and other tables without having to play with fixmaps. > > With this, my system with 1GB memory boots fine with ACPI enabled. so without this patch, your system doesn't boot? YH