US Patent 10430225 Traffic management on an interconnect

Disclosed herein are techniques for maintaining a secure execution environment on a server. In one embodiment, the server includes a bus manager circuit. The bus manager circuit comprises a first bus interface configured to be coupled with a first hardware device of the server, and a second bus interface configured to be coupled with a second hardware device of the sever. The bus manager further includes a control module. Under a first mode of operation, the control module is configured to receive an access request from the first hardware device to access the second hardware device, and responsive to determining not to grant the access request based on a pre-determined access policy, and block at least some of data bits corresponding to the access request from the second bus interface. The control module may also process the access request in a different manner under other modes of operations.