Re: [Xen-devel] [PATCH 3/3] xen: Document XEN_SYSCTL_CPUPOOL_OP_RMCPU anomalous EBUSY result

[Juergen Gross <jgross@xxxxxxxx>]

On 15/04/16 16:11, Ian Jackson wrote:
> Juergen Gross writes ("Re: [Xen-devel] [PATCH 3/3] xen: Document 
> XEN_SYSCTL_CPUPOOL_OP_RMCPU anomalous EBUSY result"):
>> Just saw there are still two cases left where EBUSY will be returned:
>>
>> - when trying to remove the last cpu from a cpupool with active domains
>>   (EBUSY seems appropriate)
> 
> The problem is that EBUSY here might mean "this operation can't be
> done because it amounts to a request for a configuration which
> violates an invariant" or "this operation can't be done for temporary
> reasons and you should retry it".

I'm not sure I understand your comment correctly: do you see a problem
with EBUSY being returned in the two cases I mentioned or just in the
one case you cited?


Juergen


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