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To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: mmap'ing a large file
Date: 15 Aug 2002 12:34:32 -0700
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Followup to:  <1029342745.8255.6.camel@lemsip>
By author:    Gianni Tedesco <gianni@ecsc.co.uk>
In newsgroup: linux.dev.kernel
> 
> Intel is a 32bit architecture, that is to say the address space is 2^32
> bytes (4GB), of this address space the kernel takes the top 2GB and
> userspace the bottom 2GB.
> 

NAK.  3 GB userspace, 1 GB kernel space is the default.

The 3 GB is subdivided into 1 GB for the program, and 2 GB for libraries
and other mmaps (grows up) and the stack (grows down).

	-hpa
-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt	<amsp@zytor.com>
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