From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: INIT handler modification
Date: Fri, 07 Jan 2005 17:51:17 +0000 [thread overview]
Message-ID: <1105120277.25267.29.camel@eeyore> (raw)
In-Reply-To: <41DE990B.702@Ext.Bull.Net>
On Fri, 2005-01-07 at 15:13 +0100, Francois Wellenreiter wrote:
> Here is the main point, the present code of INIT handler for slave CPUs
> is reduced
> to (file arch/ia64/kernel/mca_asm.S) :
> ______________________________
>
> GLOBAL_ENTRY(ia64_slave_init_handler)
> 1: br.sptk 1b
> END(ia64_slave_init_handler)
> ______________________________
>
> I think that when the kernel is deadlocked on another CPU than the
> monarch one,
> the traces may be a bit short when I push on the "DUMP" button to have a
> complete
> diagnosis of my system.
You're right, this is a serious problem that needs to be fixed.
Unfortunately, it's a little more complicated than the change
you propose, because we need per-CPU areas (or locking) for
saving the min-state areas from firmware. I think the recent
"per cpu MCA/INIT" changes are heading in this direction, so
please take a look at those, try them out, and improve them!
next prev parent reply other threads:[~2005-01-07 17:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-07 14:13 INIT handler modification Francois Wellenreiter
2005-01-07 17:51 ` Bjorn Helgaas [this message]
2005-01-07 23:57 ` Luck, Tony
2005-01-08 1:26 ` Keith Owens
2005-01-09 17:21 ` Russ Anderson
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