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: <200709251452.01415.rjw@sisk.pl>
Date:	Tue, 25 Sep 2007 14:52:00 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Mikhail Kshevetskiy <mikhail.kshevetskiy@...il.com>,
	linux-kernel@...r.kernel.org, Dave Jones <davej@...hat.com>,
	Chuck Ebbert <cebbert@...hat.com>
Subject: Re: 2.6.23-rc4-mm1 and -rc6-mm1: boot failure on HP nx6325, related to clockevents

On Tuesday, 25 September 2007 14:28, Thomas Gleixner wrote:
> On Tue, 2007-09-25 at 14:20 +0200, Rafael J. Wysocki wrote:
> > > > > As i can see from the log, you are booting on computer with dualcore AMD
> > > > > processor. Do you have C1E feature enabled? 
> > 
> > That's possible, how to check?
> > 
> > > > > i386 kernel disable lapic on dualcore AMD with C1E support (see 
> > > > > http://lkml.org/lkml/2007/3/29/199). x86_64 kernel do not have this
> > > > > patch still (it's required for tickless kernel only).
> > > > 
> > > > Well it is required for non tickless mode as well.
> > > > 
> > > > >  As result, if
> > > > > you run x86_64 kernel with hrt patch on such computer, the system
> > > > > will stall during boot on lapic timer calibration.
> > > > 
> > > > Thanks for the reminder. I have a look into this.
> > > 
> > > Can you please boot mainline and provide the output of:
> > > 
> > > # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> > 
> > albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> >            CPU0       CPU1
> >   0:    1159492          0  local-APIC-edge      timer
> > LOC:          0    1158220   Local interrupts
> >
> >   0:    1161996          0  local-APIC-edge      timer
> > LOC:          0    1160723   Local interrupts
> 
> Hmm. That's strange. It looks like the local apic timer is not used, but
> x86_64 definitely lacks the above check.

Ouch, sorry.  This is from the kernel booted with "noapictimer".

I'll get the correct output in a little while.

Greetings,
Rafael
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