linux-kernel - Re: [4/6] go BUG on vmallocspace in __pa() (was: Re: [-mm patch] i386: enable 4k stacks by default)

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Message-ID: <20070430185242.GB11512@one.firstfloor.org>
Date:	Mon, 30 Apr 2007 20:52:42 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	William Lee Irwin III <wli@...omorphy.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Christoph Hellwig <hch@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	David Chinner <dgc@....com>, Zan Lynx <zlynx@....org>,
	Adrian Bunk <bunk@...sta.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [4/6] go BUG on vmallocspace in __pa() (was: Re: [-mm patch] i386: enable 4k stacks by default)

On Mon, Apr 30, 2007 at 10:45:10AM -0700, William Lee Irwin III wrote:
> On Mon, Apr 30, 2007 at 10:38:19AM -0700, William Lee Irwin III wrote:
> > Here's what I did for i386 for someone concerned about blowing the stack.
> 
> Add checks to __pa() so it goes BUG() on vmallocspace addresses.

Sorry I think that's too costly to do. __pa is pretty common

-Andi
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