In one embodiment, a processor comprises a register file, register management logic coupled to the register file, and at least two sources of window swap operations coupled to the register management logic. The register management logic is configured to control an interface to the register file to switch register windows in the register file in response to one or more window swap operations. The sources of window swap operations and the register management logic are configured to cooperate according to an arbitration scheme to arbitrate between conflicting window swap operations to be performed using the interface. In one particular implementation, for example, block signals may be used from higher priority sources to lower priority sources to block issuance of window swap operations by the lower priority sources.