7. Most privileged Domain in Xen.
Device Drivers and User Interface
provided by OS, and Userspace tools
Running in Dom 0.
It’s main task is to handle devices,
because it’s running in higher level of
privileges than others.
It’s Provide User interface to Hypervisor.
It’s Guest and more Restricted.
Can’t perform Hypercalls that Access
Hardware directly.
We can have an arbitrary number of
Dom U on a System .
Can also be Migrated.
3:: Because it’s running in higher level of privileged so it can access hardware
The split driver is typically as simple as it can be. It is designed to move datafrom the domU guests to the dom0 guest, usually using ring buffers in sharedmemory.