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: <1190707673.4035.275.camel@chaos>
Date:	Tue, 25 Sep 2007 10:07:53 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Mikhail Kshevetskiy <mikhail.kshevetskiy@...il.com>
Cc:	linux-kernel@...r.kernel.org, "Rafael J.Wysocki" <rjw@...k.pl>,
	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 Tue, 2007-09-25 at 10:14 +0400, Mikhail Kshevetskiy wrote:
> Hello Thomas, Rafael
> 
> > We know, that
> > - disabling local apic timers work
> 
> As i can see from the log, you are booting on computer with dualcore AMD
> processor. Do you have C1E feature enabled? 
> 
> 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.

	tglx


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