vivado 综合参数修改问题咨询

lipan6126

使用vivado综合时，报 Warning：[Synth 37-21] Bus register expansion bit limt(2000000) exceeded(found XXXX bus register bits). Bus register expansion disabled, which may impact constranit object selection. You may adjust the parameter synth.elab.expandBusRegLimit to a higher value at a cost of memory used in elaboration to re-enable expansion.
请问在vivado环境中具体怎么操作？