linux-kernel - Re: [stable] [tip:x86/urgent] x86: Add memory modify constraints to xchg() and cmpxchg()

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Message-ID: <20100923183724.GS23040@kroah.com>
Date:	Thu, 23 Sep 2010 11:37:24 -0700
From:	Greg KH <greg@...ah.com>
To:	Tomáš Janoušek <tomi@...i.cz>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>, mingo@...hat.com,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	glommer@...hat.com, alan@...rguk.ukuu.org.uk, zamsden@...hat.com,
	stable@...nel.org, mtosatti@...hat.com, gregkh@...e.de,
	peter@...frader.org, tglx@...utronix.de, avi@...hat.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [stable] [tip:x86/urgent] x86: Add memory modify constraints
 to xchg() and cmpxchg()

On Fri, Sep 10, 2010 at 03:10:35PM +0200, Tomáš Janoušek wrote:
> Hello,
> 
> On Thu, Sep 09, 2010 at 02:15:16PM -0700, H. Peter Anvin wrote:
> > > The system boots and works just fine with 2.6.32.21 with the patch reverted.
> > > v2.6.36-rc3-185-gd56557a works fine as well, perhaps there were other fixes
> > > that didn't get to stable (e.g. 4532b30).
> > 
> > I believe this needs 69309a05907546fb686b251d4ab041c26afe1e1d, which I
> > think is being queued up for stable.
> > 
> > Could you try applying 69309a05907546fb686b251d4ab041c26afe1e1d and see
> > if it solves your problem.
> 
> It does indeed. Thanks.

Hm, that patch doesn't apply to the latest .32-stable tree.  Can someone
provide me with a backported version so I make sure I get it correct?

thanks,

greg k-h
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