linux-kernel - Re: 2.6.24-rc8 hangs at mfgpt-timer

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Message-ID: <20080117134032.4cc1a1cf@ephemeral>
Date:	Thu, 17 Jan 2008 13:40:32 -0500
From:	Andres Salomon <dilinger@...ued.net>
To:	Arnd Hannemann <hannemann@...informatik.rwth-aachen.de>
Cc:	linux-kernel@...r.kernel.org, Jordan Crouse <jordan.crouse@....com>
Subject: Re: 2.6.24-rc8 hangs at mfgpt-timer

On Thu, 17 Jan 2008 10:54:30 +0100
Arnd Hannemann <hannemann@...informatik.rwth-aachen.de> wrote:

> Andres Salomon schrieb:
> > On Wed, 16 Jan 2008 16:19:12 -0500
> > Andres Salomon <dilinger@...ued.net> wrote:
> > 
> >> On Wed, 16 Jan 2008 18:44:07 +0100
> >> Arnd Hannemann <hannemann@...informatik.rwth-aachen.de> wrote:
> >>
> >>> Hi,
> >>>
> >>> I'm trying to boot 2.6.24-rc8 on a GEODE LX board (ALIX.3),
> >>> and it hangs during boot:
> >>>
> >>> [   12.689971] NET: Registered protocol family 16
> >>> [   12.703329] geode-mfgpt:  Registered timer 0
> >>> [   12.716149] mfgpt-timer:  registering the MFGT timer as a clock event...
> >>>
> >>
> >> What BIOS are you using?  It's possible that our detection code is
> >> failing to detect in-use timers.
> 
> I'm using v0.99 (latest available).


v0.99 of what?  Jordan seems to think it's an Award BIOS, but I'd like
to make sure.


> Also note when I do enable the mysterios "MFGPT workaround" option in
> the bios the machine hangs directly after:
> [   36.780990] NET: Registered protocol family 16


"MFGPT workaround"?  That sounds a bit frightening.

Presumably, the BIOS is using the MFGPTs, but we're not detecting them as
being in use.

I'm assuming that booting with 'nomfgpt' works for you?


> 
> > 
> > 
> > Also, could you provide a log with the following (untested) patch?  I'm
> > curious how many MFGPTs we're actually detecting as being available, and
> > the existing code is backwards.
> 
> The relevant part would be:
> [   23.092507] NET: Registered protocol family 16
> [   23.105875] geode-mfgpt:  8 MFGPT timers available
> [   23.120247] geode-mfgpt:  Registered timer 0
> [   23.133076] mfgpt-timer:  registering the MFGT timer as a clock event.
> 
> Best regards,
> Arnd Hannemann
> 
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