Checking out Virtual Device Interfaces

9. April 2010 by admin.

Loaded the spice server software as the VDI front end. Check back for more info…

Here is the partial specifications from the paper:

“Virtual Device Interfaces (VDI) provide a standard way to publish
interfaces of virtual devices by a software component. This enables
other software components to interact with these devices. Going
forward, the first component will be called the back-end and the second
component will be called the front-end. An example for using Virtual
Device Interfaces is as part of a virtual machine system, where the
back-end will be the hardware emulation layer. The back-end will expose
interfaces like display port, mouse input etc. The front-end will plug
into the display output and will render its output according to it's
specific implementation. The front-end will also plug into the mouse
input and send mouse events to be processed by the back-end. In
addition many other interface types can be exposed by the back-end.
Another example of back-end is a remote display system in a physical
machine environment. Here, the back-and is implemented using known
techniques for interacting with the native OS for the purpose of
receiving display updates and pushing inputs. The back-end exposes
interfaces like display output, mouse input etc. The front-end can be
exactly the same as in the previous example.

By using VDI one back-end an use many types of front-ends without any
special code modification. It is also possible for the back-end to
dynamically switch front-ends, and improve back-end usability and
flexibility. The use of front-ends by many back-ends allows for a
better sharing of development, maintenance, and overall product
quality.”

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