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Re: [Xen-devel] [RFC 0/5] xen/arm: support big.little SoC

On Thu, Sep 22, 2016 at 12:29:53PM +0100, Julien Grall wrote:
>Hello Peng,
>On 22/09/16 10:27, Peng Fan wrote:
>>On Thu, Sep 22, 2016 at 10:50:23AM +0200, Dario Faggioli wrote:
>>>On Thu, 2016-09-22 at 14:49 +0800, Peng Fan wrote:
>>>>On Wed, Sep 21, 2016 at 08:11:43PM +0100, Julien Grall wrote:
>>>A feature like `xl cpupool-biglittle-split' can still be interesting,
>>"cpupool-cluster-split" maybe a better name?
>You seem to assume that a cluster, from the MPIDR point of view, can only
>contain the same set of CPUs. I don't think this is part of the architecture,
>so this may not be true in the future.
>>>completely orthogonally and independently from the affinity based work,
>>>and this series looks like it can be used to implement that. :-)
>>Agree. All pcpus default can be assigned into cpupool0 based on the affinity 
>What do you mean by affinity? From MPIDR?

vcpu hard affinity. When allocate or initialize vcpu, the hard affinity needs
to be inititialized.


>>We could add one like "cpupool-numa-split" to split different classes cpu
>>into different cpupools.
>Julien Grall


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