When I analyze a VHDL design, the following warning occurs:
"Warning:Xst:2592 <attribute_name> on <entity/component/instance> in <XCF> overrides <generic/parameter on entity/component/instance>. Old value for attribute is ignored"
This warning occurs when there is a synthesis attribute that is different from the generic/parameter applied to the same instance. In this case, there are two attributes and the newer one is overriding the older one.