From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261183AbULLEM2 (ORCPT ); Sat, 11 Dec 2004 23:12:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261541AbULLEM2 (ORCPT ); Sat, 11 Dec 2004 23:12:28 -0500 Received: from picard.ine.co.th ([203.152.41.3]:8396 "EHLO picard.ine.co.th") by vger.kernel.org with ESMTP id S261183AbULLEMU (ORCPT ); Sat, 11 Dec 2004 23:12:20 -0500 Subject: Re: kernel (64bit) 4GB memory support From: Rudolf Usselmann Reply-To: rudi@asics.ws To: Jeff Garzik Cc: linux-kernel@vger.kernel.org In-Reply-To: <41BB32A4.2090301@pobox.com> References: <1102752990.17081.160.camel@cpu0> <41BAC68D.6050303@pobox.com> <1102760002.10824.170.camel@cpu0> <41BB32A4.2090301@pobox.com> Content-Type: text/plain Organization: ASICS.ws - Solutions for your ASICS & FPGA needs - Message-Id: <1102824735.17081.187.camel@cpu0> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Sun, 12 Dec 2004 11:12:15 +0700 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2004-12-12 at 00:47, Jeff Garzik wrote: ... > All 2.6 kernels work with 64bit and >4GB memory, on my configurations > (x86-64, ia64, and alpha). > > It is a mistake to assume that all 64bit and/or >4GB is broken. > > > (Tiger K8W, dual Opteron) > > Ok, we finally get a bit of useful information. > > Are you CERTAIN that you are booting a 64bit kernel? > Is your memory PC1600, PC2100, or PC2700? > Is your memory installed in matched pairs? > Is all your memory ECC registered? > Is your BIOS at the latest version? Hi Jeff, "yes" to all of the above. I am 100% certain this is not a hardware problem. I have paired simms and with a 32 bit kernel can use the entire 4GB. I also have run memtest86 ... > Once we get through the hardware issues, now it is time to do a binary > search of 2.6 kernels, to see which one works for you. If no 2.6 > kernels work for you, then give 2.4 kernels a try. > > Jeff I have previously reported this bug to the list (about a week ago). I am greatfull for every response and am willing to investigate everything. Previously I was running Fedora Core 2 32BIT with the 2.6.9 kernel and never had problems with 4GB. After finally upgrading to 64 bit I can't use 4GB memory anymore. # ver_linux Linux cpu10 2.6.9RU1.1 #11 SMP Sun Dec 5 11:42:18 ICT 2004 x86_64 x86_64 x86_64 GNU/Linux Gnu C 3.4.2 Gnu make 3.80 binutils 2.15.92.0.2 util-linux 2.12a mount 2.12a module-init-tools 3.1-pre5 e2fsprogs 1.35 reiserfsprogs line reiser4progs line pcmcia-cs 3.2.7 quota-tools 3.12. PPP 2.4.2 nfs-utils 1.0.6 Linux C Library 2.3.3 Dynamic linker (ldd) 2.3.3 Procps 3.2.3 Net-tools 1.60 Kbd 1.12 Sh-utils 5.2.1 Modules Loaded autofs4 nfs lockd sunrpc binfmt_misc dm_mod button battery ac nvidia ipv6 ohci_hcd uhci_hcd ehci_hcd hw_random snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore floppy The attached boot log shows the kernel panic .... Kind Regards, rudi