linux-kernel - Re: [PATCH][RFC] exception processing in early boot

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Message-Id: <200608302206.46898.ak@suse.de>
Date:	Wed, 30 Aug 2006 22:06:46 +0200
From:	Andi Kleen <ak@...e.de>
To:	Willy Tarreau <w@....eu>
Cc:	pageexec@...email.hu, davej@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH][RFC] exception processing in early boot

On Wednesday 30 August 2006 22:03, Willy Tarreau wrote:
> On Wed, Aug 30, 2006 at 09:36:54PM +0200, Andi Kleen wrote:
> > 
> > > Andi, if you remove the HLT here, some CPUs will spin at full speed. This
> > > is nasty during boot because some of them might not have enabled their
> > > fans yet for instance
> > 
> > That would be a severe bug in the platform. Basically always the fans are managed
> > by SMM code.
> 
> It was just an example. Other examples include virtual machines never
> stopping because they will see the guest is working and not halted.

They have to deal with that anyways because the machine can just
crash with a busy loop. And BTW -- take a look at the normal panic.

-Andi

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