Apparatus and Method to Protect an Information Handling System Against Other Devices

摘要

An information handling system includes a processor, a peripheral component interconnect express (PCIe) endpoint, and a PCIe downstream port. The PCIe downstream port blocks PCIe vendor-defined messages (VDMs) from the PCIe endpoint as a default mode, changes to a second mode in response to the PCIe endpoint being verified, and allows PCIe VDMs from the PCIe endpoint while in the second mode.