Microsoft Technology Licensing, LLC

Artur Klauser

Thomas Philip Speier

Abolade Gbadegesin

Jason Stewart Wohlgemuth

Gagan Gupta

Derek Chiou

Cody D Hartwig

Soheil Ebadian

Performing speculative address translation in processor-based devices is disclosed herein. In one exemplary embodiment, a processor-based device provides a processing element (PE) that defines a speculative translation instruction such as an enqueue instruction for offloading operations to a peripheral device. The speculative translation instruction references a plurality of bytes including one or more virtual memory addresses. After receiving the speculative translation instruction, an instruction decode stage of an execution pipeline circuit of the PE transmits a request for address translation of the virtual memory address to a memory management unit (MMU) of the PE. The MMU then performs speculative address translation of the virtual memory address into a corresponding translated memory address. In some embodiments, any address translation errors encountered are raised to an appropriate exception level, and may be raised synchronously or asynchronously with respect to an operation performed when the speculative translation instruction is executed.

Performing speculative address translation in processor-based devices

Enabling peripheral device messaging via application portals in processor-based devices is disclosed herein. In one embodiment, a processor-based device comprises a processing element (PE) including an application portal configured to logically operate as a message store, and that is exposed as an application portal address within an address space visible to a peripheral device that is communicatively coupled to the processor-based device. Upon receiving a message directed to the application portal address from the peripheral device, an application portal control circuit enqueues the message in the application portal. In some embodiments, the PE may further provide a dequeue instruction that may be executed as part of the application, and that results in a top element of the application portal being dequeued and transmitted to the application. Some embodiments may provide further mechanisms for sending success and/or failure notifications, and/or for informing the application that the message has been enqueued.

Enabling peripheral device messaging via application portals in processor-based devices

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Artur Klauser