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Date: Mon, 1 Oct 2012 06:46:52 -0400
From: Jamie Gloudon <jamie.gloudon@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: hughd@google.com
Subject: Re: x86_64: wrong DirectMap kB
Message-ID: <20121001104652.GA1390@darkstar>
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Hey,

 Interesting. I am able to reproduce the same problem as you using mem=700M, which shows: 

DirectMap4k:        4096 kB
DirectMap2M:    18446744073709547520 kB

However, it appears to be normal without the boot parameter:

DirectMap4k:        4096 kB
DirectMap2M:    15708160 kB

What does your output looks like with the full amount on 3.6?

Jamie Gloudon