linux-kernel - Re: kernel page table mapping for >1GB <3 GB for x86 arch without PAE

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Message-ID: <24089.1251486780@turing-police.cc.vt.edu>
Date:	Fri, 28 Aug 2009 15:13:00 -0400
From:	Valdis.Kletnieks@...edu
To:	joe Shmoe <jsmoe3@...oo.com>
Cc:	Roland Dreier <rdreier@...co.com>, linux-kernel@...r.kernel.org
Subject: Re: kernel page table mapping for >1GB <3 GB for x86 arch without PAE

On Fri, 28 Aug 2009 11:40:56 PDT, joe Shmoe said:

> For the sake of discussion, let us say I have 3.5 GB of RAM of x86 with PAE
> disabled and I have only one process running other than kernel.

Oh, so an embedded environment. Sure, you could play games with that.

But most Linux systems have more processes running than just 'init'. And
in that case, what do you do with your memory map?  It gets a bit more
complicated then....

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