US 10,852,967 B2 · Facilitating virtual functions using memory allocation in a virtualization environment

Abstract

Apparatuses and methods are described that provide for a mechanism for allocating physical device memory for one or more virtual functions. In particular, a memory allocating framework is provided to utilize device memory more efficiently by mapping at least one target location of the physical memory in a Base Address Register (BAR) associated with the virtual function from a plurality of available target locations based on an allocation request. The memory allocating framework is further configured to compare an indication associated with the requesting virtual function to an identifier of the requested target location. Moreover, the memory allocating framework is further configured to allow the simultaneous use of more than one virtual function at a time while providing isolation between multiple virtual functions.

Claims20

Dependent claims

An apparatus for allocating physical memory of a device to a virtual function, the apparatus comprising:

a physical memory;
and
a processing device configured to:
receive an allocation request for allocating the physical memory to a virtual function;
allocate at least one target location of the physical memory in a Base Address Register (BAR) associated with the virtual function based on the allocation request, wherein an identifier for the at least one target location comprises an offset associated with the at least one target location and a corresponding physical location of the physical memory;
and
provide an indication of the at least one allocated target location for use by the virtual function, wherein the allocated target location is accessible by the virtual function exclusively.

4 more elements

A method of allocating physical memory of a device to a virtual function, the method comprising:

receiving an allocation request for allocating a physical memory of a device to a virtual function;
allocating at least one target location of the physical memory in a Base Address Register (BAR) associated with the virtual function based on the allocation request, wherein an identifier for the at least one target location comprises an offset associated with the at least one target location and a corresponding physical location of the physical memory;
and
providing an indication of the at least one allocated target location for use by the virtual function, wherein the allocated target location is accessible by the virtual function exclusively.

1 more element

An apparatus for allocating physical memory of a device to a virtual function the apparatus comprising:

at least one controller and at least one memory including a computer program code, wherein the at least one memory including the computer program code is configured, with the at least one controller, to cause the apparatus to:
receive an allocation request for allocating a physical memory of a device to a virtual function;
allocate at least one target location of the physical memory in a Base Address Register (BAR) associated with the virtual function based on the allocation request, wherein an identifier for the at least one target location comprises an offset associated with the at least one target location and a corresponding physical location of the physical memory;
and
provide an indication of the at least one allocated target location for use by the virtual function, wherein the allocated target location is accessible by the virtual function exclusively.

2 more elements

Dependencies are inferred from the claim text.

Facilitating virtual functions using memory allocation in a virtualization environment

Life of this patent

Facilitating virtual functions using memory allocation in a virtualization environment

Life of this patent

Abstract

Claims20