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Re: [Xen-devel] memory hotplug for domUs



On Fri, Jan 20, 2017 at 09:19:48AM -0500, Boris Ostrovsky wrote:
> 
> >> For HVM/PVH guests however, ACPI Memory Hotplug.  That way it will work
> >> for all operating systems, not just Linux.  (Lets please not waste time
> >> building a somewhat-square wheel which only fits on a Linux shaped axle :) 
> >> )
> 
> What about PVH dom0? I suspect we will have the same problem with ACPI
> memory hotplug there as we have with ACPI CPU hotplug.
> 
> Of course, we can decide not to support ACPI hotplug for dom0 (which I
> think is reasonable).

But IIRC we don't support ACPI memory hotplug for any kind of guests (not even
HVM), all guest types use the PV balloon driver, that relies on xenstore.

Roger.

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