Re: [Xen-devel] [PATCHv1] xen/balloon: disable memory hotplug in PV guests

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 09/03/15 15:09, Boris Ostrovsky wrote:
> On 03/09/2015 10:10 AM, David Vrabel wrote:
>> Memory hotplug doesn't work with PV guests because:
>>
>>    a) The p2m cannot be expanded to cover the new sections.
>>
>>    b) add_memory() builds page tables for the new sections which means
>>       the new pages must have valid p2m entries (or a BUG occurs).
> 
> Is this due to recent p2m rework?

(a) is but (b) has always meant memory hotplug on PV was broken.

David

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