linux-kernel - Re: [1/2] 2.6.22-rc5: known regressions with patches

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Date:	Wed, 20 Jun 2007 16:04:22 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Ian McDonald <ian.mcdonald@...di.co.nz>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Miklos Szeredi <miklos@...redi.hu>,
	Ingo Molnar <mingo@...e.hu>,
	"Darrick J. Wong" <djwong@...ibm.com>, Andi Kleen <ak@...e.de>,
	Bj?rn Steinbrink <B.Steinbrink@....de>,
	William Cohen <wcohen@...hat.com>,
	"S. P. Prasanna" <prasanna@...ibm.com>,
	Antonino Daplas <adaplas@...il.com>,
	Olaf Hering <olaf@...fle.de>, Ville Syrj?l? <syrjala@....fi>,
	Jean Delvare <khali@...ux-fr.org>,
	Rudolf Marek <r.marek@...embler.cz>,
	Soeren Sonnenburg <kernel@....de>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>
Subject: Re: [1/2] 2.6.22-rc5: known regressions with patches



On Wed, 20 Jun 2007, Linus Torvalds wrote:
> 
> There's just no *point*. 

Put another way: we lived without DEBUG_RODATA for fifteen years, why 
should we now start adding complexity to work around code that doesn't 
accept the (fairly small) debugging it gives?

Has anybody actually found a bug using it?

As far as I know, the biggest reason to use DEBUG_RODATA is

 (a) Hey, it's a cheap way to check one thing

 (b) An added layer of security (which it's not that great for, but it 
     might make sense to make it more of a real security feature).

and neither of them really seems to say "let's add more code to other 
pieces of the kernel to work around it" to me.

			Linus
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