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Re: [Xen-devel] [PATCH 7/7] xen: Implement hot_add_cpu hook.

On 20/06/13 12:21, Stefano Stabellini wrote:
> Can't we just call pc_new_cpu and cpu_x86_create like upstream QEMU
> does?
> Are there any reasons why we can't introduce the same
> cpu_added_notifier that is upstream?

Yes, in our current version of qemu-xen, a CPU can not be hotplug.

When pc_new_cpu is called, there is a check to see if this object (cpu)
can be hotplug to the machine. The original patch series was introducing
that, I think. So it would require few more patches from QEMU which
would made the backport more complicated.

And the notifier depend on the creation of new object cpu.

Anthony PERARD

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