tree 0494e503e262679d5fab6f2892517a67200955a6
parent aa7ba37678307fab5a57c0b4868db7ce60701d7a
author Stefano Stabellini <sstabellini@kernel.org> 1509403253 -0700
committer Boris Ostrovsky <boris.ostrovsky@oracle.com> 1509455153 -0400

xen/pvcalls: connect to the backend

Implement the probe function for the pvcalls frontend. Read the
supported versions, max-page-order and function-calls nodes from
xenstore.

Only one frontend<->backend connection is supported at any given time
for a guest. Store the active frontend device to a static pointer.

Introduce a stub functions for the event handler.

Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>