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由 Stefano Stabellini 提交于
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: NStefano Stabellini <stefano@aporeto.com> Reviewed-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com> CC: boris.ostrovsky@oracle.com CC: jgross@suse.com Signed-off-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com>
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