Centralized device virtualization layer for heterogeneous processing units

A non-transitory computer-readable medium storing instructions that, when executed by a processing unit, cause the processing unit to manage one or more enumerated devices associated with a computing device that includes a plurality of central processing units (CPUs), by performing the steps of:

• receiving, from an operating system included in a plurality of operating systems residing within the computing device, a request to access an enumerated device associated with the computing device, the operating system being associated with a first CPU included in the plurality of CPUs;
• determining that the operating system has permission to access the enumerated device;
• determining whether a location associated with the enumerated device is mapped to a corresponding location within an address space related to the operating system;
• and
• if the location associated with the enumerated device is mapped, then:
• allowing the operating system to access the enumerated device;
• or
• if the location associated with the enumerated device is not mapped, then:
• mapping the location associated with the enumerated device to the address space related to the operating system;
• and
• allowing the operating system to access the enumerated device.

A computing device, comprising:

• one or more enumerated devices;
• a plurality of central processing units (CPUs);
• a plurality of operating systems;
• and
• a memory storing a centralized device virtualization layer (CDVL) that is configured to cause one of the CPUs to to manage the one or more enumerated devices, by performing the steps of:
• receiving, from a first operating system included in the plurality of operating systems, a request to access an enumerated device included in the one or more enumerated devices, the first operating system being associated with a first CPU included in the plurality of CPUs;
• determining that the first operating system has permission to access the enumerated device;
• determining whether a location associated with the enumerated device is mapped to a corresponding location within an address space related to the first operating system;
• and
• if the location associated with the enumerated device is mapped, then:
• allowing the first operating system to access the enumerated device;
• or
• if the location associated with the enumerated device is not mapped, then:
• mapping the location associated with the enumerated device to the address space related to the first operating system;
• and
• allowing the first operating system to access the enumerated device.