SYSTEM AND METHOD FOR VIRTUAL HARDWARE MEMORY PROTECTION

摘要

A memory protection unit including hardware logic. The hardware logic receives a transaction from a virtual central processing unit (CPU) directed at a bus slave, the transaction being associated with a virtual CPU identification (ID), wherein the virtual CPU is implemented on a physical CPU. The hardware logic also determines whether to grant or deny access to the bus slave based on the virtual CPU ID. The virtual CPU ID is different than an ID of the physical CPU on which the virtual CPU is implemented.

主权项

1. An integrated circuit comprising:
a bus slave having a resource; a central processing unit (CPU) configured to implement a virtual CPU (VCPU) having a VCPU identification (ID) indicating a safety level associated with a transaction request of the VCPU for accessing the resource; and a protection unit coupled between the bus slave and the CPU, the protection unit configured to either grant or deny the transaction request based on the safety level indicated by the VCPU ID.