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To: Jiri Kosina <jkosina@suse.cz>
Cc: Zdenek Kabelac <zdenek.kabelac@gmail.com>,
       Kernel development list <linux-kernel@vger.kernel.org>,
       Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>
Subject: Re: BUG: using smp_processor_id() during suspend with 2.6.25-rc8
From: Andi Kleen <andi@firstfloor.org>
References: <c4e36d110804070625n17eb44e1nbb5558f500f13438@mail.gmail.com>
	<Pine.LNX.4.64.0804072348050.26562@twin.jikos.cz>
Date: Tue, 08 Apr 2008 00:02:17 +0200
In-Reply-To: <Pine.LNX.4.64.0804072348050.26562@twin.jikos.cz> (Jiri Kosina's message of "Mon, 7 Apr 2008 23:54:06 +0200 (CEST)")
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Jiri Kosina <jkosina@suse.cz> writes:
>
> It is not safe to call smp_processor_id() in cases we are not sure someone 
> will not reschedule us.

We are sure. Machine checks always run with interrupts off.

Also BTW in a non preempt-rt kernel all exceptions run non preemptable
anyways.

-Andi