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Subject: Re: apm power_off on smp
From: Xavier Bestel <xavier.bestel@free.fr>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Pozsar Balazs <pozsy@uhulinux.hu>,
       Kelledin <kelledin+LKML@skarpsey.dyndns.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: 15 Jul 2002 01:34:02 +0200
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Le lun 15/07/2002 ? 02:39, Alan Cox a ?crit :
> On Mon, 2002-07-15 at 00:03, Pozsar Balazs wrote:
> > 
> > Yes, all I want is poweroff.
> > I understand that apm is not smp safe, and pretty much all of it is
> > disabled in smp mode.
> > 
> > What i do not understand is why the poweroff functionality is disabled by
> > default.
> 
> Because it too is unsafe on some machines

Would it be possible to use the CPU-hotplug patch to unplug all CPUs
except the one entering apm power-off ?

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