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Re: [PATCH v2 0/7] pseries NUMA distance rework

From: David Gibson
Subject: Re: [PATCH v2 0/7] pseries NUMA distance rework
Date: Thu, 3 Sep 2020 11:49:04 +1000

On Thu, Sep 03, 2020 at 11:35:39AM +1000, David Gibson wrote:
> On Tue, Sep 01, 2020 at 09:56:38AM -0300, Daniel Henrique Barboza wrote:
> > Hi,
> > 
> > Following the reviews of the first version [1], specially this
> > reply from David [2], I decided to take a step back and refactor
> > all the code in hw/ppc/spapr* that operates with ibm,associativity,
> > ibm,associativity-reference-points and ibm,max-associativity-domains.
> > 
> > A new file named 'spapr_numa.c' was created to gather all the
> > associativity related code into helpers that write NUMA/associativity
> > related info to the FDT. These helpers are then used in other
> > spapr_* files. This allows us to change NUMA related code in a
> > single location, instead of searching every file to see where is
> > associativity being written and how, and all the soon to get
> > more complex logic can be contained in spapr_numa.c. I consider
> > the end result to be better than what I ended up doing in v1.
> > 
> > Unlike v1, there is no NUMA distance change being done in this series.
> > Later on, the hub of the new NUMA distance calculation will be
> > spapr_numa_associativity_init(), where we'll take into consideration
> > user input from numa_states, handle sizes to what the PAPR kernel
> > understands and establish assoaciativity domains between the NUMA
> > nodes.
> Patches 1..4 applied to ppc-for-5.2.  Patch 5 has some nits I've
> commented on.

Ah, sorry, I realised I missed something.  Patches 1..2 are still
applied, but patch 3 has a nit large enough to call for a respin.

David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!

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