Re: [Xen-devel] [PATCH v3 1/3] x86/numa: Allow arbitrary value of PXM in PXM<->node mapping

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On Wed, 2015-02-25 at 18:41 -0500, Boris Ostrovsky wrote:
> ACPI defines proximity domain identifier as a 32-bit integer. While
> in most cases the values will be zero-based this is not guaranteed,
> making current pxm2node[256] mapping structure not appropriate.
> 
> We will instead use MAX_NUMNODES-sized array of struct pxm2node to
> store PXM-to-node mapping. To accommodate common case of zero-based
> and contiguios PXMs we will, whenever possible, try to use PXM as
> index into this array array for fast lookups.
> 
                ^array for fast lookups.

Dario

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