Re: [PATCH] mm: Introduce kernelcore=reliable option

[Kamezawa Hiroyuki]

On 2015/10/31 4:42, Luck, Tony wrote:
> > If each memory controller has the same distance/latency, you (your firmware) don't need
> > to allocate reliable memory per each memory controller.
> > If distance is problem, another node should be allocated.
> >
> > ...is the behavior(splitting zone) really required ?
>
> It's useful from a memory bandwidth perspective to have allocations
> spread across both memory controllers. Keeping a whole bunch of
> Xeon cores fed needs all the bandwidth you can get.

Hmm. But physical address layout is not related to dual memory controller.
I think reliable range can be contiguous by firmware...

-Kame


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