[Xen-devel] Do I need xenbus_driver?

[NAHieu <nahieu@xxxxxxxxx>]

Hi,

I am writing a small kernel module, which splits into 2 part: one runs
in dom0, and the other runs in domU.  The main job is to exchange some
data between them, and there is no hardware related.

It seems simple enough: dom0 module watches for domU via xenstore,
then they exchange grant-table-ref with each other and then go ahead
doing their work.

The problem is: I saw all the xen drivers, and they all register to
xenbus (with xenbus_driver structure). Look again at my code, I dont
see why I need to exploit the xebus_driver interface. So my question
is: Why I need xenbus_driver in my case, and what is the advantages?

(That confuses me is looks like I can survive without it)

Many thanks.
Hieu

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