The host code and kernel code are agnostic to the memory type used, whether DDR is used or HBM, or even PLRAMs. The only change you will need to make here is to modify the connectivity file.
Vitis flow makes it easy to switch memory connection using -sp switches, and in this case, we need to replace DDR with HBM. The capacity of each HBM bank is 256MB. Since our application requires 600MB of data to be added, we will need 3 HBM banks as contiguous memory. Vitis flow enables this by grouping the memory as shown below in the connectivity file.