Juergen Gross writes ("Re: [Xen-devel] [PATCH] libxl: correct xl
cpupool-numa-split with vcpu limited dom0"):
> On 14/06/16 12:07, Ian Jackson wrote:
> > I looked at the code for a minute or two, and perhaps I'm being dense
> > this morning, but I wasn't able to see (from the code and the commit
> > message and from the diff) precisely what misunderstanding the
> > original author of the code had, and how this patch fixes it.
>
> The problem arises if dom0 has less vcpus than a numa node. In this case
> libxl_set_vcpuonline() will fail as the cpumap has more bits set than
> the number of dom0's vcpus.
Oh, right, of course.
> My patch will result in a call of libxl_set_vcpuonline() only in case
> dom0 has more vcpus online than the number of cpus of node it is to be
> restricted to.
That makes sense, thanks.
I have made a note of this patch in my backport list.
Ian.
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