From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bill Burns <bburns@redhat.com>
Subject: Re: RFC: large system support - 128 CPUs
Date: Wed, 13 Aug 2008 06:53:23 -0400
Message-ID: <48A2BD23.6080902@redhat.com>
References: <C4C87530.25614%keir.fraser@eu.citrix.com>
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To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>, Tim Deegan <Tim.Deegan@citrix.com>
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Keir Fraser wrote:
> On 13/8/08 11:23, "Bill Burns" <bburns@redhat.com> wrote:
> 
>>> For the other one I'll have to think a bit. The need for GDT entries per CPU
>>> currently obviously means scaling much past a few hundred CPUs is going to
>>> be difficult.
>> Yes, would like something better here. And as I said, we
>> don't know yet that just adding the additional page solves
>> anything.
> 
> How many CPUs do you currently need/want to support?
> 

Currently just looking to get 128 working.
But would be nice to have some proper sizing,
or even detection of running out. There is a
'last' GDT entry or some such #define, that is
never used (at least in the 3.1 code base).

 Bill


>  -- Keir
> 
> 
> 
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