linux-kernel - Re: [Bug Fix]: Do 32-bit table calculations in pre-processor

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Message-Id: <200907031338.24778.lkml@morethan.org>
Date:	Fri, 3 Jul 2009 13:38:22 -0500
From:	"Michael S. Zick" <lkml@...ethan.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [Bug Fix]: Do 32-bit table calculations in pre-processor

On Fri July 3 2009, Andi Kleen wrote:
> "Michael S. Zick" <lkml@...ethan.org> writes:
> 
> > Here is one I have found useful in my VIA processor bug hunting:
> 
> Could you please expand a bit what bug this is supposed to fix?
> 

I make no claims for it at the moment - too early in the test process.
Just the general observation that it takes 0.5M to describe 0.5G of ram.

Also, 
the observation that (1<<32) drops the bit off the left end of a 32-bit value.
You can see the result in the portion of the post you snipped out.  ;)

Mike
> -Andi
> 

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