Macro make_rep_input 

macro_rules! make_rep_input {
    ($struct_expr:expr, $field_ident:ident, $arr_expr:expr) => { ... };
}

Assemble a RepInput from a hypercall input struct and an array of rep data Arguments: 1. The hv_input_* struct with the input data 2. Name of the __IncompleteArrayField in the struct 3. An array or slice containing the rep data