linux-kernel - Re: BUG: GCC-4.4.x changes the function frame on some functions

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Message-ID: <4B056E32.3010809@zytor.com>
Date:	Thu, 19 Nov 2009 08:11:30 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	rostedt@...dmis.org
CC:	Andrew Haley <aph@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	feng.tang@...el.com, Fr??d??ric Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>, jakub@...hat.com,
	gcc@....gnu.org
Subject: Re: BUG: GCC-4.4.x changes the function frame on some functions

On 11/19/2009 08:02 AM, Steven Rostedt wrote:
> On Thu, 2009-11-19 at 15:44 +0000, Andrew Haley wrote:
>> Thomas Gleixner wrote:
> 
>> We're aligning the stack properly, as per the ABI requirements.  Can't
>> you just fix the tracer?
> 
> And how do we do that? The hooks that are in place have no idea of what
> happened before they were called?
> 

Furthermore, it is nonsense -- ABI stack alignment on *32 bits* is 4
bytes, not 16.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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