linux-kernel - Re: [PATCH] x86: Clear DF before calling signal handler

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Message-ID: <20080306092102.GB12919@elte.hu>
Date:	Thu, 6 Mar 2008 10:21:02 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Aurelien Jarno <aurelien@...el32.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Clear DF before calling signal handler


* Aurelien Jarno <aurelien@...el32.net> wrote:

> The Linux kernel currently does not clear the direction flag before 
> calling a signal handler, whereas the x86/x86-64 ABI requires that. 
> This become a real problem with gcc version 4.3, which assumes that 
> the direction flag is correctly cleared at the entry of a function.
> 
> This patches changes the setup_frame() functions to clear the 
> direction before entering the signal handler.

thanks, applied.

	Ingo
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