xen/pvcalls: connect to the backend

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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>

...

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Stefano Stabellini 2017-10-30 15:40:53 -07:00 • committed by Boris Ostrovsky

parent aa7ba37678

commit 2196819099

1 changed files with 132 additions and 0 deletions

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drivers/xen/pvcalls-front.c

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