Date: Thu, 25 Nov 2004 16:27:24 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Rui Nuno Capela <rncbc@rncbc.org>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
       Linus Torvalds <torvalds@osdl.org>
Subject: Re: [patch, 2.6.10-rc2] floppy boot-time detection fix
Message-ID: <20041125152724.GA12731@elte.hu>
References: <20041118123521.GA29091@elte.hu> <20041118164612.GA17040@elte.hu> <20041122005411.GA19363@elte.hu> <20041123175823.GA8803@elte.hu> <20041124101626.GA31788@elte.hu> <20041124112745.GA3294@elte.hu> <21889.195.245.190.93.1101377024.squirrel@195.245.190.93> <20041125120133.GA22431@elte.hu> <20041125143337.GA32051@elte.hu> <20041125144810.GA8160@elte.hu>
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* Ingo Molnar <mingo@elte.hu> wrote:

> > (this does not solve the irq threading related SMP lockup though, i'm
> > attacking that problem next - now that my fd0 gets detected fine ;-) )
> 
> in fact, i cannot reproduce the SMP lockup anymore and the floppy works
> just fine. [...]

it turns out that this was the side-effect of me doing idle=poll.

The reason for the lockup was a bug in the -RT patch, it broke
disable_hlt() which resulted in all CPUs spinning in idle with
interrupts disabled - with an obvious hard lockup as a result.
Fixed it in my tree.

	Ingo
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