Re: [Qemu-devel] [RFC v2 4/6] hostmem: return recreated MemoryRegion if current can't be reused

[Paolo Bonzini]

On 08/06/2015 18:25, Igor Mammedov wrote:
> 
>> >  Can we just outlaw this, forcing each memory backend to be
>> > used only once?
> to outlaw it gracefully without asserting QEMU during hotplug
> user should be able to detect that it's outlawed i.e. use
> memory_region_is_hva_mapped(), but yes we can.

We can also add a ->detach method to HostMemoryBackend, and forbid
get_memory after it has been invoked.

Paolo