Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755258AbYJBXp7 (ORCPT ); Thu, 2 Oct 2008 19:45:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753580AbYJBXpv (ORCPT ); Thu, 2 Oct 2008 19:45:51 -0400 Received: from rv-out-0506.google.com ([209.85.198.232]:17400 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753358AbYJBXpu convert rfc822-to-8bit (ORCPT ); Thu, 2 Oct 2008 19:45:50 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references:x-google-sender-auth; b=GRsFwATvMfioWq1nim4BESsy9nwsxsGc2d3kRQPf90ejnKYF7PofPTXj6EAs7AeAYr BAV9AWGOsgK69ZxRyd8G6KsY2jOZdHDkjau3bjp6QTNAHbwbPjt/UpTAtts9IZdkvKdU rrbVKxj+mWDmnon4LMgB5vQIxmhzwvQ3l05DI= Message-ID: <86802c440810021645x4076e3feqba2c5ec3e3ea3d00@mail.gmail.com> Date: Thu, 2 Oct 2008 16:45:49 -0700 From: "Yinghai Lu" To: "=?ISO-8859-1?Q?J.A._Magall=F3n?=" Subject: Re: [PATCH 2/2] x86: mtrr_cleanup try gran_size to less than 1M Cc: Linux-Kernel In-Reply-To: <20081003012036.28c00fd7@werewolf.home> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Content-Disposition: inline References: <1222739652-17169-1-git-send-email-yhlu.kernel@gmail.com> <1222739652-17169-2-git-send-email-yhlu.kernel@gmail.com> <20081003003237.04469201@werewolf.home> <86802c440810021539y6cdff33dh9df3e04eba85a9df@mail.gmail.com> <20081003012036.28c00fd7@werewolf.home> X-Google-Sender-Auth: 5ac76716dc43d3b6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1825 Lines: 53 On Thu, Oct 2, 2008 at 4:20 PM, J.A. Magall?n wrote: > On Thu, 2 Oct 2008 15:39:34 -0700, "Yinghai Lu" wrote: > > Oops, sorry, this is without cleanup. This is a distro kernel and is built > but not enable by deafult. As it is rc7, I will use 'enble_mtrr_cleanup' ;): > > cicely:~# cat /proc/mtrr > reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1 > reg01: base=0x100000000 (4096MB), size=1024MB: write-back, count=1 > reg02: base=0x140000000 (5120MB), size= 512MB: write-back, count=1 > reg03: base=0x160000000 (5632MB), size= 256MB: write-back, count=1 > > I have lost 2Gb ? that is memhole > > cicely:~# free > total used free shared buffers cached > Mem: 3755568 182348 3573220 0 14024 72716 > -/+ buffers/cache: 95608 3659960 > > I can't easily try your patch, this is a distro kernel. > I will get the src.rpm... just pull tip/master, and use your config from /boot/config.... > > Ahhhhh.... > > This is a dual opteron board. dmidecode says: > > Handle 0x0026, DMI type 16, 15 bytes > Physical Memory Array > Location: System Board Or Motherboard > Use: System Memory > Error Correction Type: Single-bit ECC > Maximum Capacity: 8 GB > Error Information Handle: Not Provided > Number Of Devices: 8 > > So it maps one Opteron memory in first 4Gb and the other on the second 4Gb. > So I should have 2Gb@0 and 2Gb@4Gb. > What I don't know is why the bios eats up 256Mb. check if you enable memhole remapping in BIOS. YH -- 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/