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Exit with 0 for success. Exit with 1 for an error. Exit with 2 if the operation should be retried for any reason (e.g. a timeout or because another operation was in progress). This allows a program or script driving xen-livepatch to determine if the operation should be retried without parsing the output. Acked-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>