linux-kernel - Re: [PATCH/RFC] powerpc: avoid generating .eh

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Message-ID: <20090224174838.GB6690@bombadil.infradead.org>
Date:	Tue, 24 Feb 2009 12:48:38 -0500
From:	Kyle McMartin <kyle@...radead.org>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Kyle McMartin <kyle@...radead.org>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, kyle@...hat.com, roland@...hat.com,
	aoliva@...hat.com
Subject: Re: [PATCH/RFC] powerpc: avoid generating .eh_frame sections with
	gcc-4.4

On Tue, Feb 24, 2009 at 09:40:34AM +0100, Sam Ravnborg wrote:
> x86 has a specific ".section .eh_frame,"a",@progbits" in vdso32/int80.S as one example.
> 
> Have you analyzed all these hits?
> 

These aren't effected by the patch. All the occurances of it inside the
kernel are explicitly written for the vdso/vsyscall functionality (which
needs it, since it's mapped into a userspace task, and you obviously
might be running a debugger on it.) The other hit in x86_64 is just a
discard section of the linker script.

regards, Kyle
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