From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761496AbZCPSVW (ORCPT ); Mon, 16 Mar 2009 14:21:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755660AbZCPSVN (ORCPT ); Mon, 16 Mar 2009 14:21:13 -0400 Received: from rv-out-0506.google.com ([209.85.198.226]:4363 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755140AbZCPSVM convert rfc822-to-8bit (ORCPT ); Mon, 16 Mar 2009 14:21:12 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=H1OcdZ9j0ZolWULVWyGzuUl0BdEwP9crZ7Bd4HMu9q5EHQBlj6Oz8OoxJYsAgvkuiF 27aeetoy+bUs+OsN3uA+L3kDc8exM4Sn39tVa1cYvDtO84Yvp422OpjnkobiPw8zP6G0 H7qow6+Oea8uMIQRS8335V3HmJfb3StRj22kM= MIME-Version: 1.0 In-Reply-To: <49BE58BA.1000907@pardus.org.tr> References: <49BE58BA.1000907@pardus.org.tr> Date: Mon, 16 Mar 2009 11:21:09 -0700 X-Google-Sender-Auth: 96d3ff9f46915f56 Message-ID: <86802c440903161121s3ba18abaiaa3ccf6847e0eafe@mail.gmail.com> Subject: Re: [BUG 2.6.29_rc8] BIOS Bug: CPU MTRRs don't cover all of memory, losing 0MB of RAM. From: Yinghai Lu To: =?ISO-8859-9?Q?Ozan_=C7a=F0layan?= Cc: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-9 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 16, 2009 at 6:48 AM, Ozan Çağlayan wrote: > Hi, > > Just compiled and tried to boot it on an HP ProLiant DL580 G5. Here's the > interesting part: > > .. > -- last_pfn = 0x82ffff max_arch_pfn = 0x1000000 > x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 0MB of RAM. > ------------[ cut here ]------------ > WARNING: at arch/x86/kernel/cpu/mtrr/main.c:1655 mtrr_trim_uncached_memory+0x2a9/0x2cd() > Hardware name: ProLiant DL580 G5 > Modules linked in: > Pid: 0, comm: swapper Not tainted 2.6.29_rc8-115 #1 > Call Trace: >  [] warn_slowpath+0x71/0xa8 >  [] ? _spin_unlock_irqrestore+0x19/0x1f >  [] ? _spin_unlock_irqrestore+0x19/0x1f >  [] ? release_console_sem+0x185/0x1b2 >  [] ? vprintk+0x280/0x2a5 >  [] ? printk+0xf/0x15 >  [] mtrr_trim_uncached_memory+0x2a9/0x2cd >  [] setup_arch+0x439/0x99e >  [] ? release_console_sem+0x185/0x1b2 >  [] ? vprintk+0x280/0x2a5 >  [] ? __reserve_early+0xe4/0xf8 >  [] ? printk+0xf/0x15 >  [] start_kernel+0x7b/0x345 >  [] __init_begin+0x85/0x8d > ---[ end trace 4eaa2a86a8e2da22 ]--- > update e820 for mtrr > .. > > This is a quite generic x86 desktop kernel with only the > following differences for the server: > > CONFIG_X86_GENERICARCH=y > CONFIG_X86_BIGSMP=y > CONFIG_MCORE2=y > CONFIG_HIGHMEM64G=y > # CONFIG_X86_GENERIC is not set > > I didn't want to add full dmesg and config for not flooding the e-mail but > if you need them or other output/information, i can send them. > can you check tip/master? http://people.redhat.com/mingo/tip.git/readme.txt and post boot log. YH