On Wed, Oct 31, 2012 at 1:34 PM, Avi Kivity <avi@xxxxxxxxxx> wrote: > 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. Yep. It should find out when memory regions change through its listener. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
