linux-kernel - Re: [tip:x86/mm] x86: Work around old gas bug

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Message-ID: <20110302124912.GB23940@sli10-conroe.sh.intel.com>
Date:	Wed, 2 Mar 2011 20:49:12 +0800
From:	Shaohua Li <shaohua.li@...el.com>
To:	Jan Beulich <JBeulich@...ell.com>
Cc:	"mingo@...e.hu" <mingo@...e.hu>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hpa@...or.com" <hpa@...or.com>
Subject: Re: [tip:x86/mm] x86: Work around old gas bug

On Wed, Mar 02, 2011 at 06:35:39PM +0800, Jan Beulich wrote:
> >>> On 02.03.11 at 09:42, tip-bot for Shaohua Li <shaohua.li@...el.com> wrote:
> > Commit-ID:  253d89d3dd6b65595f317e5f1ecef43aa207a3a0
> > Gitweb:
> > http://git.kernel.org/tip/253d89d3dd6b65595f317e5f1ecef43aa207a3a0
> > Author:     Shaohua Li <shaohua.li@...el.com>
> > AuthorDate: Tue, 1 Mar 2011 15:52:26 -0800
> > Committer:  Ingo Molnar <mingo@...e.hu>
> > CommitDate: Wed, 2 Mar 2011 08:16:23 +0100
> >
> > x86: Work around old gas bug
> >
> > pre-2.16 binutils works fine, post-2.16 binutils works fine, but 2.16 broke
> > again:
> >
> >  > arch/x86/kernel/entry_64.S: Assembler messages:
> >  > arch/x86/kernel/entry_64.S:984: Error: junk at end of line, first
> > unrecognized character is `1'
> >  > [...]
> >
> > Signed-off-by: Shaohua Li <shaohua.li@...el.com>
> > Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> > Cc: "H. Peter Anvin" <hpa@...or.com>
> > Cc: Jan Beulich <jbeulich@...ell.com>
> > LKML-Reference: <201103012352.p21NqRN1006974@...p1.linux-foundation.org>
> > Signed-off-by: Ingo Molnar <mingo@...e.hu>
> 
> Ingo, didn't you write yesterday that this looks unacceptable to
> you?
> 
> Shaohua, did you try whether the .irpc alternative I suggested
> works (knowing that a similar .irpc was in place previously)?
I tried, but fails at early stage (not related to the problem). According
to HPA, I need rebuild gcc too, which I haven't done yet.

Thanks,
Shaohua
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