Re: [Xen-devel] RFC: large system support - 128 CPUs

[Bill Burns <bburns@xxxxxxxxxx>]

Keir Fraser wrote:
> On 13/8/08 11:23, "Bill Burns" <bburns@xxxxxxxxxx> 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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