From: Jack Steiner <steiner@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: IA64 kexec/kdump 2.6.18-rc5 patch
Date: Tue, 12 Sep 2006 21:25:34 +0000 [thread overview]
Message-ID: <20060912212534.GA27705@sgi.com> (raw)
In-Reply-To: <1156837594.2598.15.camel@linux-znh>
On Tue, Sep 12, 2006 at 01:23:54PM -0700, Luck, Tony wrote:
> > Hmmm. I may have answered at least part of my question. It appears that the boot cpu
> > cannot exit back to the SAL slave loop since it was never in the slave loop to start with.
> >
> > This will take some thought..... More later.
>
> Yes. cpu0 is a special case as there is no way to return it to SAL.
> Linux hotplug code has a hack where we borrow the return details from
> some other cpu in the case that someone wants to take cpu0 offline.
> Will this work for Altix? Would we have to be careful to get the
> return details from some other cpu on the same node?
>
> -Tony
Interesting idea. We might be able to make this work. It looks like we
need to make some changes to our BIOS to make this work but it looks
possible.
I'll investigate this some more.....
-- jack
next prev parent reply other threads:[~2006-09-12 21:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-29 7:46 IA64 kexec/kdump 2.6.18-rc5 patch Zou Nan hai
2006-08-29 19:38 ` Bjorn Helgaas
2006-08-29 22:03 ` Zou Nan hai
2006-08-30 8:27 ` Horms
2006-08-30 8:27 ` Horms
2006-08-30 8:27 ` Horms
2006-09-01 2:24 ` Horms
2006-09-12 17:13 ` Jack Steiner
2006-09-12 19:59 ` Jack Steiner
2006-09-12 20:23 ` Luck, Tony
2006-09-12 21:25 ` Jack Steiner [this message]
2006-09-12 22:56 ` Zou Nan hai
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