From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Vitaly Bordug <vbordug@ru.mvista.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: preempt crash in 2.6.18
Date: Sat, 14 Oct 2006 09:14:38 +1000 [thread overview]
Message-ID: <1160781278.4792.279.camel@localhost.localdomain> (raw)
In-Reply-To: <20061014012105.6ca4ff05@localhost.localdomain>
On Sat, 2006-10-14 at 01:21 +0400, Vitaly Bordug wrote:
> On Fri, 13 Oct 2006 09:16:52 -0500
> Rune Torgersen wrote:
>
> >
> > This is from a Freescale 8265 running 2.6.18
> > Anyone have any idea what this is and how to fix it?
> >
> Yes. Actually, I recall alike thing and used to fix with proper spin-locking if the
> cascade PCI irq, which apparently does do_irq that seems to confuse preempt counters.
>
> Just a pure guess.
How so ? Cascades shouldn't do do_IRQ with the new irq code anyway
unless this is still arch/ppc, they should do either __do_IRQ or better,
generic_handle_irq().
Ben.
next prev parent reply other threads:[~2006-10-13 23:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-13 14:16 preempt crash in 2.6.18 Rune Torgersen
2006-10-13 21:21 ` Vitaly Bordug
2006-10-13 23:14 ` Benjamin Herrenschmidt [this message]
2006-10-15 9:20 ` Vitaly Bordug
2006-10-16 13:50 ` Rune Torgersen
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