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

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On Tue, 2015-03-03 at 10:51 +0000, Jan Beulich wrote:
> >>> On 27.02.15 at 15:54, <dario.faggioli@xxxxxxxxxx> wrote:

> > The idea is that, whether the mask is full because no one touched this
> > default, or because it has been manually set like that, there is nothing
> > to do at the soft affinity balancing level.
> 
> In that case I think __vcpu_has_soft_affinity() simply isn't general
> enough: Along with checking whether all bits are set in the
> soft affinity, it should also check whether soft is a subset of hard
> (or the passed in second mask). And really it should imo also cover
> the case where not all bits are set in the mask, but all those
> corresponding to online CPUs (both of which ought to have the
> same effect)
>
I'm fine with this.

> That would then leave introducing a "relaxed (or "strict",
> depending on what we'd like to be the default) mode in the patch
> here, controlling whether ->cpu_hard_affinity gets overridden
> (and we'd always override ->cpu_soft_affinity).
> 
And with this too... I'll comment the code in the other email, the one
with the patch.

Regards,
Dario

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