Hi, > E.g. with 32 bridges, and 32 devices behind each one, > the available 64K space gets us only 64 bytes per device. 15 bridges (with io window enabled) max, the smallest io window you can assign to a bridge is 4k, and you need some space for the devices on the root bus ... cheers, Gerd _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization