Re: [PATCH 1/5 v2] x86: allow specifying the NUMA nodes Dom0 should run on

[Dario Faggioli <dario.faggioli@citrix.com>]

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On Fri, 2015-03-06 at 09:19 +0000, Jan Beulich wrote:
> ... by introducing a "dom0_nodes" option augmenting the "dom0_mem" and
> "dom0_max_vcpus" ones.
> 
> Note that this gives meaning to MEMF_exact_node specified alone (i.e.
> implicitly combined with NUMA_NO_NODE): In such a case any node inside
> the domain's node mask is acceptable, but no other node. This changed
> behavior is (implicitly) being exposed through the memop hypercalls.
> 
> Note further that this change doesn't take care of moving the initrd
> image into memory matching Dom0's affinity when the initrd doesn't get
> copied (because of being part of the initial mapping) anyway.
> 
> And note finally that this doesn't get us meaningfully closer to
> handing vNUMA information to Dom0 (which will require the current
> striping of allocations to become node-specific in order for the passed
> on information to be meaningful).
> 
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> Acked-by: Ian Campbell <ian.campbell@citrix.com>
> ---
> v2: Use MAX_NUMNODES sized array for storing PXMs. Implement relaxed
>     mode. Minor other cleanup.
> 
Reviewed-by: Dario Faggioli <dario.faggioli@cirix.com>

Regards,
Dario

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