Re: [Linux-ia64] [patch] logical CPU numbering

From: Martin Hicks <mort_at_wildopensource.com>
Date: 2003-03-26 05:03:55
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
Received on Tue Mar 25 10:04:02 2003

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