[SeaBIOS] [Qemu-devel] [RFC PATCH v3 05/19] Implement dimm device abstraction

[Avi Kivity]

On 10/31/2012 02:18 PM, Stefan Hajnoczi wrote:
>>
>> IMO we should use the same mechanism as proposed for other devices:
>> address_space_map() should grab a reference on the dimm device, and
>> address_space_unmap() can release it.  This way device destruction will
>> be deferred as soon as all devices complete I/O.
>>
>> We will have to be careful with network receive buffers though, since
>> they can be held indefinitely.
> 
> Network receive buffers aren't mapped.  Net receive is not zero-copy.
> For example, virtio-net does virtqueue_pop() inside
> virtio_net_receive().
> 
> I don't see a problem with networking.

What about vhost-net?  But that is managed separately with a MemoryListener.


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