[Ovirt-devel] how to Increase memory for vm online ?

[Perry Myers]

Guido � wrote:
> On Thu, Dec 25, 2008 at 10:42:48PM +0300, pronix pronix wrote:
>> I found virtio_balloon.ko
>> but can't find how it work.
>>
>> 2008/12/25 Perry Myers <pmyers at redhat.com>:
>>> �� wrote:
>>>> how to increase RAM on running vm ?
>>> As far as I know, kvm doesn't allow memory hotplug.  So in order to give a
>>> vm more memory you need to shut the vm down, adjust the memory and then
>>> restart.
>>>
>>> I'm not sure where memory hotplug is on the list of features for kvm,
> See the balloon monitor command in recent kvm. This needs to be hooked
> into libvirt's qemudDomainSetMemory.
>  -- Guido

Guido,

How does the guest support this?  Do Windows/Linux OSes support hotplug 
(add/remove) of system memory dynamically or are additional guest drivers 
needed for this?

Thanks,

Perry