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公开(公告)号：US09201682B2
公开(公告)日：2015-12-01
申请号：US13923513
申请日：2013-06-21
Applicant: ATI Technologies ULC
Inventor： Gongxian Jeffrey Cheng , Anthony Asaro , Yinan Jiang
CPC classification number: G06F9/45558 , G06F1/24 , G06F9/45533 , G06F11/1441 , G06F2009/4557 , G06F2009/45575 , G06F2009/45591
Abstract: In a hardware-based virtualization system, a hypervisor switches out of a first function into a second function. The first function is one of a physical function and a virtual function and the second function is one of a physical function and a virtual function. During the switching a malfunction of the first function is detected. The first function is reset without resetting the second function. The switching, detecting, and resetting operations are performed by a hypervisor of the hardware-based virtualization system. Embodiments further include a communication mechanism for the hypervisor to notify a driver of the function that was reset to enable the driver to restore the function without delay.
Abstract translation: 在基于硬件的虚拟化系统中，管理程序将第一个功能切换到第二个功能。 第一个功能是物理功能和虚拟功能之一，第二个功能是物理功能和虚拟功能之一。 在切换期间，检测到第一功能的故障。 第一个功能在不重置第二个功能的情况下被复位。 切换，检测和重置操作由基于硬件的虚拟化系统的管理程序执行。 实施例还包括用于管理程序的通信机制，以通知驾驶员已经重置的功能，以使得驾驶员能够无延迟地恢复功能。
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公开(公告)号：US20220188139A1
公开(公告)日：2022-06-16
申请号：US17121678
申请日：2020-12-14
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Kamraan Nasim , Dezhi Ming , Ahmed M. Abdelkhalek , Dmytro Chenchykov , Andy Sung
Abstract: A technique for managing access to a micro engine, the method comprising: determining that a virtual function “VF”) is to be given access to direct communication with a micro engine; in response to the determining, configuring the micro engine to accept direct communication from the VF; monitoring for unpermitted communication; and after a time period has expired, configuring the micro engine to no longer accept direct communication from the VF.
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公开(公告)号：US11194614B2
公开(公告)日：2021-12-07
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
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.
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公开(公告)号：US20190004842A1
公开(公告)日：2019-01-03
申请号：US15639971
申请日：2017-06-30
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Ahmed M. Abdelkhalek , Guopei Qiao , Andy Sung , Haibo Liu , Dezhi Ming , Zhidong Xu
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.
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公开(公告)号：US20190004840A1
公开(公告)日：2019-01-03
申请号：US15637810
申请日：2017-06-29
Applicant: ATI Technologies ULC
Inventor： Anthony Asaro , Yinan Jiang , Kelly Donald Clark Zytaruk
IPC: G06F9/455 , G06F9/48 , G06F9/38 , G06F21/74 , G06F13/372
Abstract: A register protection mechanism for a virtualized accelerated processing device (“APD”) is disclosed. The mechanism protects registers of the accelerated processing device designated as physical-function-or-virtual-function registers (“PF-or-VF* registers”), which are single architectural instance registers that are shared among different functions that share the APD in a virtualization scheme whereby each function can maintain a different value in these registers. The protection mechanism for these registers comprises comparing the function associated with the memory address specified by a particular register access request to the “currently active” function for the APD and disallowing the register access request if a match does not occur.
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Patent Agency Ranking
公开(公告)号：US20180113731A1
公开(公告)日：2018-04-26
申请号：US15348225
申请日：2016-11-10
Inventor： Jeffrey G. Cheng , Yinan Jiang , Guangwen Yang , Kelly Donald Clark Zytaruk , LingFei Liu , XiaoWei Wang
CPC classification number: G06F9/45558 , G06F2009/4557 , G06F2009/45575 , G06T1/20
Abstract: A request is sent from a new virtual function (VF) to a physical function for requesting the initialization of the new VF. The controlling physical function and the new VF establish a two-way communication channel that to start and end the VF's exclusive accesses to registers in a configuration space. The physical function uses a timing control to monitor that exclusive register access by the new VF is completed within a predetermined time period. The new VF is only granted a predetermined time period of exclusive access to complete its initialization process. If the exclusive access period is timed out, the controlling physical function can terminate the VF to prevent GPU stalls.
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公开(公告)号：US20220058048A1
公开(公告)日：2022-02-24
申请号：US17453341
申请日：2021-11-02
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Ahmed M. Abdelkhalek , Guopei Qiao , Andy Sung , Haibo Liu , Dezhi Ming , Zhidong Xu
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.
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28.发明授权公开(公告)号：US10923082B2
公开(公告)日：2021-02-16
申请号：US16177064
申请日：2018-10-31
Applicant: ATI TECHNOLOGIES ULC
Inventor： Yinan Jiang , Zhigang Luo
Abstract: A processing unit includes a processor core that implements a physical function that supports multiple virtual functions. The processing unit includes a bus interface that supports communication between an external bus and the physical and virtual functions implemented using the processor core. During a reset of the processing unit, power is interrupted to the processor core power to the bus interface is maintained. The bus interface responds to requests for the physical and virtual functions received over the external bus concurrently with the power interruption. The bus interface responds based on state information associated with the virtual function. Power is restored to the processor core in response to the reinitialization of the GPU. The bus interface stops responding to requests for the physical and virtual functions received over the bus interface in response to restoring the power to the processor core and forwards requests received over the external bus from the bus interface to the processor core.
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公开(公告)号：US10198283B2
公开(公告)日：2019-02-05
申请号：US15348225
申请日：2016-11-10
Inventor： Jeffrey G. Cheng , Yinan Jiang , Guangwen Yang , Kelly Donald Clark Zytaruk , LingFei Liu , XiaoWei Wang
Abstract: A request is sent from a new virtual function (VF) to a physical function for requesting the initialization of the new VF. The controlling physical function and the new VF establish a two-way communication channel that to start and end the VF's exclusive accesses to registers in a configuration space. The physical function uses a timing control to monitor that exclusive register access by the new VF is completed within a predetermined time period. The new VF is only granted a predetermined time period of exclusive access to complete its initialization process. If the exclusive access period is timed out, the controlling physical function can terminate the VF to prevent GPU stalls.
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30.发明申请公开(公告)号：US20250110930A1
公开(公告)日：2025-04-03
申请号：US18478895
申请日：2023-09-29
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Dmytro Chenchykov , Shaoyun Liu , Vignesh Chander
IPC: G06F16/21
Abstract: A computer-implemented method for ensuring processing unit hardware state integrity in live migration can include participating as a source, by a processing unit, in a live migration procedure by injecting, into a live migration data package containing a state of the processing unit, a signature verifying the state. The method can additionally include participating as a target, by the processing unit, in an additional live migration procedure migrating an additional live migration data package containing an additional state of an additional processing unit by performing an integrity check based on an additional signature, in the additional live migration data package, verifying the additional state. Various other methods, systems, and computer-readable media are also disclosed.
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