Paravirtualized virtual GPU

A method for configuring a virtual machine executing on a primary processing unit to access a secondary processing unit, the method comprising:

• receiving a first request from a driver residing within the virtual machine to set up access to the secondary processing unit;
• transmitting a second request to a hardware resource manager to set up access to the secondary processing unit for the driver;
• receiving a communication from the hardware resource manager that a first channel providing access to the secondary processing unit has been allocated to the driver;
• and
• notifying the driver that the driver can transmit one or more commands directly to the secondary processing unit via the first channel,
• wherein the driver writes commands to a command buffer and communicates addresses of the commands to the secondary processing unit via the first channel.

A non-transitory computer readable medium for storing instructions that, when executed by a processor, cause the processor to configure a virtual machine executing on a primary processing unit to access a secondary processing unit, by performing the steps of:

• receiving a first request from a driver residing within the virtual machine to set up access to the secondary processing unit;
• transmitting a second request to a hardware resource manager to set up access to the secondary processing unit for the driver;
• receiving a communication from the hardware resource manager that a first channel providing access to the secondary processing unit has been allocated to the driver;
• and
• notifying the driver that the driver can transmit one or more commands directly to the secondary processing unit via the first channel,
• wherein the driver writes commands to a command buffer and communicates addresses of the commands to the secondary processing unit via the first channel.

A non-transitory computer readable medium for storing instructions that, when executed by a processor, cause the processor to configure a virtual machine executing on a primary processing unit to access a secondary processing unit, by performing the steps of:

• receiving a first request from a driver residing within the virtual machine to set up access to the secondary processing unit;
• transmitting a second request to a hardware resource manager to set up access to the secondary processing unit for the driver;
• receiving a communication from the hardware resource manager that a first channel providing access to the secondary processing unit has been allocated to the driver;
• and
• notifying the driver that the driver can transmit one or more commands directly to the secondary processing unit via the first channel,
• wherein the driver writes the one or more commands to the command buffer and notifies a control register associated with the first channel that the one or more commands are stored in the command buffer, wherein the one or more commands stored in the command buffer are transmitted to the second processing unit via the first channel in response to the notification.