linux-kernel - Re: Math-emu kills the kernel on Athlon64 X2

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Date:	Wed, 20 Sep 2006 10:16:08 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Jesper Juhl" <jesper.juhl@...il.com>
Cc:	billm@...bpc.org.au, billm@...urbia.net,
	"Linus Torvalds" <torvalds@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: Math-emu kills the kernel on Athlon64 X2

On Tuesday 19 September 2006 23:14, Jesper Juhl wrote:
> On 19 Sep 2006 10:01:55 +0200, Andi Kleen <ak@...e.de> wrote:
> > "Jesper Juhl" <jesper.juhl@...il.com> writes:
> >
> > > Hi,
> > >
> > > If I enable the math emulator in 2.6.18-rc7-git2 (only version I've
> > > tried this with) and then boot the kernel with "no387" then I only get
> > > as far as lilo's "...Booting the kernel." message and then the system
> > > hangs.
> > >
> > > The kernel is a 32bit kernel build for K8 and my CPU is a Athlon64 X2 4400+
> >
> > Do you have a .config? I tried it and it booted until mounting root.
> >
> 
> The config is attached.

Still can't reproduce it unfortunately. I ran it on a fairly accurate 
Simulator and it seems to get until mounting root. It might depend 
on the compiler version though. I was using gcc 4.1.

-Andi
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