linux-kernel - Re: [BUG] x86 kenel won't boot under Virtual PC

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Date:	Fri, 5 Sep 2008 19:55:09 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	David Sanders <linux@...dersweb.net>, linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Jan Beulich <jbeulich@...ell.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andi Kleen <andi-suse@...stfloor.org>
Subject: Re: [BUG] x86 kenel won't boot under Virtual PC

On Fri, Sep 05, 2008 at 09:30:14AM -0700, Linus Torvalds wrote:
> 
> 
> On Fri, 5 Sep 2008, David Sanders wrote:
> >
> > The patch disables a optimization used in one place by commenting out some 
> > lines in nop.h.  Please comment.
> 
> Hmm.. I'm not a huge fan of the ASM_NOP mess, but you also disable it for 
> 64-bit x86 too.

Heh -- I originally only added it because you're asked for it ...

Yes going back to some simple generic nops and avoid all these problems
would be a great thing.

-Andi
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