linux-kernel - Re: How much kernel memory is in 64-bit OS ?

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Message-ID: <450E914C.90203@redhat.com>
Date:	Mon, 18 Sep 2006 08:30:04 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
CC:	yogeshwar sonawane <yogyas@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: How much kernel memory is in 64-bit OS ?

Jan Engelhardt wrote:
>> It depends on the architecture.
>>
>> However, all 64 bit architectures have one thing in common.
>> There is so much address space available for both kernel and
>> userspace that we won't have to worry about a shortage for a
>> very long time.
>>
>> Sure, people said that too when going from 16 bits to 32 bits,
>> but that was only a factor 2^16 difference.  This time it's the
>> square of the previous difference.
> 
> Not quite the square :)

2^32 is the square of 2^16 :)

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