linux-kernel - Re: PROBLEM: AMD Zacate E350 shows only 2.6GB memory when 8GB installed

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Message-ID: <20110617123736.GA18054@aftab>
Date:	Fri, 17 Jun 2011 14:37:36 +0200
From:	Borislav Petkov <borislav.petkov@....com>
To:	<chrish@...hspecs.com>
CC:	Borislav Petkov <bp@...en8.de>, <linux-kernel@...r.kernel.org>,
	Clemens Ladisch <clemens@...isch.de>,
	Andreas Herrmann <andreas.herrmann3@....com>
Subject: Re: PROBLEM: AMD Zacate E350 shows only 2.6GB memory when 8GB
 installed

On Fri, Jun 17, 2011 at 05:03:03AM -0400, Borislav Petkov wrote:
> On Fri, Jun 17, 2011 at 08:52:19AM +0200, Clemens Ladisch wrote:
> > chrish@...hspecs.com wrote:
> > >    I tried this on Fedora 14 and OpenSuse 11.4 and both exhibit the same
> > > behavior. 8GB is installed but only 2698476 shows available for use
> > > using "top" or "free".
> > 
> > /proc/iomem?
> > dmesg?
> 
> Also, do you have the latest BIOS? If not, can you update it? Also, can
> you try the latest upstream kernel to verify the problem still exists?

Something else you could try is update your Fedora 14 kernel since the
latest version supposedly contains a fix which is relevant to your
issue:

commit 3fdbf004c1706480a7c7fac3c9d836fa6df20d7d
Author: Andreas Herrmann <andreas.herrmann3@....com>
Date:   Thu Sep 30 14:32:35 2010 +0200

    x86, mtrr: Assume SYS_CFG[Tom2ForceMemTypeWB] exists on all future AMD CPUs

-- 
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Boris.

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