Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752141AbWCGM2j (ORCPT ); Tue, 7 Mar 2006 07:28:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752492AbWCGM2j (ORCPT ); Tue, 7 Mar 2006 07:28:39 -0500 Received: from tao.natur.cuni.cz ([195.113.56.1]:42513 "EHLO tao.natur.cuni.cz") by vger.kernel.org with ESMTP id S1752141AbWCGM2i (ORCPT ); Tue, 7 Mar 2006 07:28:38 -0500 X-Obalka-From: mmokrejs@ribosome.natur.cuni.cz X-Obalka-To: Message-ID: <440D7C75.8010307@ribosome.natur.cuni.cz> Date: Tue, 07 Mar 2006 13:28:37 +0100 From: =?windows-1252?Q?Martin_MOKREJ=8A?= User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051002 X-Accept-Language: cs MIME-Version: 1.0 To: Andrew Morton CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.16-rc5 huge memory detection regression References: <440D6581.9080000@ribosome.natur.cuni.cz> <20060307041532.3ef45392.akpm@osdl.org> In-Reply-To: <20060307041532.3ef45392.akpm@osdl.org> X-Enigmail-Version: 0.92.0.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2223 Lines: 50 BTW, BIOS during the POST test shows all 16GB, it is only linux-2.6.16-rc5 who get's it wrong. Even the summary window provided by BIOS just before grub gets loaded shows 16GB of RAM. I don't believe it is anything else then the kernel. Andrew Morton wrote: > Martin MOKREJ__ wrote: > >> I just tested 2.6.16-rc5 kernel on MSI 9136 dual Xeon server >> motherboard with 16 GB of memory and the kernel detects only 8 GB of >> RAM instead. 2.6.15 kernel detected properly 16 GB. I haven't tested >> any kernel revisions in between these two, but could if you point me >> in a specific direction. Attaching diff(1) output of dmesg(1) outputs. >> Please Cc: me in replies. Thanks! >> Martin >> >> >>[boot-2.6.15_to_16-rc5.diff text/plain (12156 bytes)] > > > The diff is useful. > > >> --- tmp/boot-2.6.15.txt 2006-03-07 11:45:48.015509048 +0100 >> +++ tmp/boot-2.6.16-rc5.txt 2006-03-07 11:45:48.029506920 +0100 >> @@ -1,4 +1,4 @@ >> -Linux version 2.6.15 (root@phylo) (gcc version 3.4.5 (Gentoo 3.4.5-r1, ssp-3.4.5-1.0, pie-8.7.9)) #1 SMP Mon Mar 6 20:20:06 MET 2006 >> +Linux version 2.6.16-rc5 (root@phylo) (gcc version 3.4.5 (Gentoo 3.4.5-r1, ssp-3.4.5-1.0, pie-8.7.9)) #1 SMP Mon Mar 6 19:58:24 MET 2006 >> BIOS-provided physical RAM map: >> BIOS-e820: 0000000000000000 - 000000000009a800 (usable) >> BIOS-e820: 000000000009a800 - 00000000000a0000 (reserved) >> @@ -12,16 +12,16 @@ >> BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) >> BIOS-e820: 00000000ff800000 - 00000000ffc00000 (reserved) >> BIOS-e820: 00000000fffffc00 - 0000000100000000 (reserved) >> - BIOS-e820: 0000000100000000 - 0000000430000000 (usable) >> -16256MB HIGHMEM available. >> + BIOS-e820: 0000000100000000 - 0000000230000000 (usable) >> +8064MB HIGHMEM available. > > > These numbers are what the BIOS is telling the kernel about your machine. > Was the BIOS changed? > > If not, you might need to wiggle those DIMMs or something. - 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/