From: Martin Hicks <mort@wildopensource.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] [patch] logical CPU numbering
Date: Tue, 25 Mar 2003 18:03:55 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705310@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705277@msgid-missing>
On Thu, Mar 20, 2003 at 12:07:32PM -0800, Wichmann, Mats D wrote:
>
> > If a CPU fails to start during smp_boot_cpus(), then the logical CPU
> > numbering gets will have a "hole". Using the number of booted CPU's
> > instead of the loop index will correct this.
>
> Just curious, does having a hole cause a problem?
> It might well; I don't know.
>
> I consider some future scenario where if cpu X
> didn't come up, it can be hot-replaced, at which
> point one might actually want to have that "slot"
> reserved for it.
I thought there was some code that depended on having logical cpus
numbered without holes. I can't find any evidence of it anymore, so
perhaps its not a bug.
mh
--
Wild Open Source Inc. mort@wildopensource.com
next prev parent reply other threads:[~2003-03-25 18:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-20 19:03 [Linux-ia64] [patch] logical CPU numbering Martin Hicks
2003-03-20 20:07 ` Wichmann, Mats D
2003-03-25 18:03 ` Martin Hicks [this message]
2003-04-03 18:31 ` Martin Hicks
2003-04-17 19:13 ` Bjorn Helgaas
2003-04-17 20:25 ` Martin Hicks
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