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Re: [Qemu-devel] [RFC v2 4/6] hostmem: return recreated MemoryRegion if


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [RFC v2 4/6] hostmem: return recreated MemoryRegion if current can't be reused
Date: Mon, 08 Jun 2015 18:28:08 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0


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



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