公开(公告)号：US20200034183A1

公开(公告)日：2020-01-30

申请号：US16591276

申请日：2019-10-02

Applicant: ATI Technologies ULC

Inventor： Yinan JIANG ,  Ahmed M. ABDELKHALEK ,  Guopei QIAO ,  Andy SUNG ,  Haibo LIU ,  Dezhi MING ,  Zhidong XU

IPC: G06F9/455 ,  G06F9/22 ,  G06F9/48

Abstract: A technique for varying firmware for different virtual functions in a virtualized device is provided. The virtualized device includes a hardware accelerator and a microcontroller that executes firmware. The virtualized device is virtualized in that the virtualized device performs work for different virtual functions (with different virtual functions associated with different virtual machines), each function getting a “time-slice” during which work is performed for that function. To vary the firmware, each time the virtualized device switches from performing work for a current virtual function to work for a subsequent virtual function, one or more microcontrollers of the virtualized device examines memory storing addresses for firmware for the subsequent virtual function and begins executing the firmware for that subsequent virtual function. The addresses for the firmware are provided by a corresponding virtual machine at configuration time.