Re: [Xen-devel] dom0 vcpu set problem

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx> 11.05.10 08:19 >>>
>Can anybody point me where in the code the acpi cpu hotplug gets triggered to
>add the vcpu again to the dom0 kernel after setting the xenstore!

No, ACPI hotplug code is not involved in pv domains' vCPU adding or
removal. Instead, the pv kernels create a xenstore watch on their
domain's "cpu" node, reading cpu/<id>/availability when the watch
fires. See drivers/xen/core/cpu_hotplug.c (for the forward ported
kernels) or drivers/xen/cpu_hotplug.c (for the pv-ops ones).

Jan


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