RE: [patch]:MC/MT enabling/identification for IA-64

From: Seth, Rohit <rohit.seth_at_intel.com>
Date: 2005-02-26 07:47:56
Ashok Raj <mailto:ashok.raj@intel.com> wrote on Friday, February 25,
2005 12:27 PM:

> On Fri, Feb 25, 2005 at 12:12:34PM -0800, Seth, Rohit wrote:
>> 
>>    Will following work:
>> 
>>    Physical id: Identifying the unique physical package id for LEU
> 
> The spec states that physical processor id or (die id) is not required
> to be unique.  Are you depending on this being unique?
> 

SAL_PHYSICAL_ID_INFO (in conjunction with PAL_LOGICAL_TO_PHYSICAL) is
guranteed to give unique values for each package in a system.

> also PAL_LOGICAL_TO_PHYSICAL states that num_log (or total number of
> logical processors in this die) doesnt necessarily need to be cpp *
> tpc) 
>

Siblings will be equal to num_log.
 
> just fyi: even if the numbers might be the same in most cases, its
> possible 
> that they could be different, because one thread didnt boot due to
> some 
> failure)
> 

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Received on Fri Feb 25 15:48:34 2005

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