linux-kernel - Re: Please revert edada399 and 9203fc9c

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Message-ID: <20090428083528.GA17622@uranus.ravnborg.org>
Date:	Tue, 28 Apr 2009 10:35:28 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Tim Abbott <tabbott@....EDU>, benh@...nel.crashing.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: Please revert edada399 and 9203fc9c

On Tue, Apr 28, 2009 at 02:56:33PM +1000, Paul Mackerras wrote:
> Linus,
> 
> Please revert commits edada399 ("powerpc: Use TEXT_TEXT macro in
> linker script.") and 9203fc9c ("powerpc: Use __REF macro instead of
> old .text.init.refok."), which depends on edada399.
> 
> Commit edada399 breaks the build because it moves the __ftr_alt_*
> sections of a file away from the .text section, causing link failures
> due to relative conditional branch targets being too far away from the
> branch instructions.  This happens on pretty much all 64-bit powerpc
> configs.
> 
> Clearly these patches were never even build-tested.  They were never
> acked by the powerpc maintainer (Ben) - because he was on vacation -
> and they weren't sent to the deputy maintainer (me) or the relevant
> mailing list (linuxppc-dev).

This is partly my fault :-(
I acked them as I did not see the issue with conditional branches.
Could I ask you to add a comment to the lds file about this.

	Sam
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