linux-kernel - Re: 2.6.23-rc4-mm1 and -rc6-mm1: boot failure on HP nx6325, related to clockevents

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Message-Id: <200709251516.58405.rjw@sisk.pl>
Date:	Tue, 25 Sep 2007 15:16:57 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Andi Kleen <ak@...e.de>, Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.23-rc4-mm1 and -rc6-mm1: boot failure on HP nx6325, related to clockevents

On Monday, 24 September 2007 21:13, Thomas Gleixner wrote:
> On Mon, 2007-09-24 at 21:11 +0200, Rafael J. Wysocki wrote:
> > > /me scratches head
> > 
> > Retested.
> > 
> > > We know, that
> > > - disabling local apic timers work
> > 
> > This works reproducibly accross the board.
> 
> Ok
> 
> > > - local apic timers (which turn off PIT) work. when noacpiFSCKEDPARSING
> > 
> > This stopped working, although it evidently worked yesterday (wtf?).
> > 
> > There seems to be a history effect in the box, to make things more
> > "interesting".
> 
> Did you connect this box to Andrews VAIO during KS ?

No, but it's famous for being interestingly broken nevertheless.

> > I think the only solid data point so far is that "noapictimer" makes the box
> > boot.
> 
> Ok. Can you add "nmi_watchdog=1" to the command line please. This runs
> through the calibration of APIC, but registers it as a dummy clock
> source (the PIT must run to make the watchdog work).
> 
> If it boots, please provide the output of /proc/timer_list

No, it doesn't.

Greetings,
Rafael
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