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Good morning, I am working on a project that does some system profiling at hypervisor level. I want to send some data from hypervisor to Dom0, and each time the data to be sent are quite small: only 8 bytes. I imagine that each time after sending data to Dom0, hypervisor needs to somehow notify Dom0 about the data it has just sent. I am studying Xen and it looks like I can do it in 2 ways: 1)