linux-kernel - Re: [stable] [patch 09/12] Fix SMP poweroff hangs

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Message-ID: <18189.27936.484657.548537@cargo.ozlabs.ibm.com>
Date:	Thu, 11 Oct 2007 10:24:00 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Greg KH <greg@...ah.com>,
	Olof Johansson <olof@...om.net>, Greg KH <gregkh@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>, "Theodore Ts'o" <tytso@....edu>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	Justin Forbes <jmforbes@...uxtx.org>,
	linux-kernel@...r.kernel.org,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Domenico Andreoli <cavokz@...il.com>,
	Mark Lord <mlord@...ox.com>,
	Randy Dunlap <rdunlap@...otime.net>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Dave Jones <davej@...hat.com>, akpm@...ux-foundation.org,
	Chuck Wolber <chuckw@...ntumlinux.com>, stable@...nel.org,
	alan@...rguk.ukuu.org.uk
Subject: Re: [stable] [patch 09/12] Fix SMP poweroff hangs

Linus Torvalds writes:

> On Wed, 10 Oct 2007, Thomas Gleixner wrote:
> > 
> > Wrapping it into a #ifdef CONFIG_X86 would be sufficient.
> 
> Well, the ppc oops seems to be a ppc bug regardless.

Sure.  And Milton and Olof have figured out what the problem is and
proposed patches to fix it.

However, I'm a bit annoyed that a significant change in behaviour like
that, with a significant likelihood of causing regressions, went in so
late (after -rc8), in a manner that affects all SMP architectures, and
without being posted to linux-arch (unless I missed it).

Paul.
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