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Date: Tue, 24 Feb 2009 09:30:28 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Tilman Schmidt <t.schmidt@phoenixsoftware.de>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
       stable@kernel.org, Jeremy Fitzhardinge <jeremy@xensource.com>
Subject: Re: [2.6.28.7] BUG: using smp_processor_id() in preemptible
	[00000000] code: pageattr-test/207
Message-ID: <20090224083028.GA17355@elte.hu>
References: <49A2ECF5.80104@phoenixsoftware.de> <20090223151331.033e0bf5.akpm@linux-foundation.org> <49A343EE.20100@phoenixsoftware.de>
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* Tilman Schmidt <t.schmidt@phoenixsoftware.de> wrote:

> On Mon, 23 Feb 2009 15:13:31 -0800, Andrew Morton <akpm@linux-foundation.org> wrote:
> > A 2.6.28.6 -> 2.6.28.7 regressionlet.
> > 
> > This, I bet:
> > 
> > commit 2cf155b300c4839a7238b825c7c5f417e9d7cc68
> > Author: Jeremy Fitzhardinge <jeremy@goop.org>
> > Date:   Wed Feb 11 09:32:19 2009 -0800
> > 
> >     x86/cpa: make sure cpa is safe to call in lazy mmu mode
> >     
> >     commit 4f06b0436b2ddbd3b67b10e77098a6862787b3eb upstream.
> 
> Jackpot! Reverted that commit on 2.6.28.7, and the BUG messages are gone.

should be fixed by this as well:

d85cf93: x86/paravirt: make arch_flush_lazy_mmu/cpu disable preemption

	Ingo