linux-kernel - Re: 2.4.35.1 and panic at boot with arch=c3 and gcc-4.x

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Message-ID: <alpine.LFD.0.999.0709060404070.26804@enigma.security.iitk.ac.in>
Date:	Thu, 6 Sep 2007 04:10:11 +0530 (IST)
From:	Satyam Sharma <satyam@...radead.org>
To:	Willy Tarreau <w@....eu>
cc:	Axel Reinhold <axel@...akout.de>,
	Richard Kojedzinszky <krichy@...etwork.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.4.35.1 and panic at boot with arch=c3 and gcc-4.x



On Thu, 6 Sep 2007, Willy Tarreau wrote:
> 
> I finally tracked the problem down to a dirty trick used to prevent
> do_test_wp_bit() from being inlined (Axel, you identified the right
> file). Unfortunately, this trick does not work anymore when gcc-4.x
> is used without -fno-unit-at-a-time, so let's use the correct method
> instead.
> 
>  
> -/* Put this after the callers, so that it cannot be inlined */
> -static int do_test_wp_bit(unsigned long vaddr)

Ick, that was horrible indeed!

> I really hope that this trick is not used anywhere else!

Me too ... funnily enough, 2.6.23-rc5 still has that wrong comment in it!
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