Re: [2.6.28.7] BUG: using smp_processor_id() in preemptible[00000000] code: pageattr-test/207

From: Ingo Molnar
Date: Tue Feb 24 2009 - 03:30:56 EST



* Tilman Schmidt <t.schmidt@xxxxxxxxxxxxxxxxxx> wrote:

> On Mon, 23 Feb 2009 15:13:31 -0800, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> > A 2.6.28.6 -> 2.6.28.7 regressionlet.
> >
> > This, I bet:
> >
> > commit 2cf155b300c4839a7238b825c7c5f417e9d7cc68
> > Author: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
> > 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
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