On 2015-12-02 at 14:04 "'Davide Libenzi' via Akaros"
<[email protected]> wrote:
> Do they agree?
> 

No.  The LAPIC ids are the "hardware" core ids (hw_core_id()).
Everything higher up in the OS is an "os" core id, which you get from
core_id().

On small machines (single socket) they usually line up.  But as you get
onto bigger machines, the hw_core_id() encodes the topology
information and is not continuous.  The os core_id space is densely
packed.

Barret

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