128a129,131
> # System has caches before the membus -> add snoop filter
> if sha_bus and system.membus.snoop_filter == NULL:
> system.membus.snoop_filter = SnoopFilter()
151a155,157
> # System has caches before the membus -> add snoop filter
> if sha_bus and system.membus.snoop_filter == NULL:
> system.membus.snoop_filter = SnoopFilter()