All MSI-X interrupts must be decoded by the user application externally to the IP. To do this, set all of their Endpoints to use an MSI-X address that falls outside of the range of the 4Kb window from the base address programmed in the Root Port MSI Base Register 1 and Root Port MSI Base Register 2. All MSI-X interrupts will be forwarded to the M_AXI(B) interface.
All TLPs forwarded to M_AXI(B) interface are subject to the PCIe-to-AXI Address translation.