公开(公告)号：US11860796B2

公开(公告)日：2024-01-02

申请号：US17397966

申请日：2021-08-09

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  Joseph R. Auricchio ,  Russell A. Blaine ,  Daniel A. Chimene ,  Simon M. Douglas ,  Landon J. Fuller ,  Yevgen Goryachok ,  John K. Kim-Biggs ,  Arnold S. Liu ,  James M. Magee ,  Daniel A. Steffen ,  Roberto G. Yepez

IPC: G06F9/54 ,  G06F21/57 ,  G06F13/10 ,  G06F13/40 ,  G06F9/445 ,  G06F13/16

CPC classification number: G06F13/102 ,  G06F9/44505 ,  G06F9/545 ,  G06F9/546 ,  G06F13/1673 ,  G06F13/4072

Abstract: Embodiments described herein provide techniques to manage drivers in a user space in a data processing system. One embodiment provides a data processing system configured perform operations, comprising discovering a hardware device communicatively coupled to the communication bus, launching a user space driver daemon, establishing an inter-process communication (IPC) link between a first proxy interface for the user space driver daemon and a second proxy interface for a server process in a kernel space, receiving, at the first proxy interface, an access right to enable access to a memory buffer in the kernel space, and relaying an access request for the memory buffer from the user space driver daemon via a third-party proxy interface to enable the user space driver daemon to access the memory buffer, the access request based on the access right.

公开(公告)号：US11748468B2

公开(公告)日：2023-09-05

申请号：US17497826

申请日：2021-10-08

Applicant: Apple Inc.

Inventor： Bernard J. Semeria ,  Devon S. Andrade ,  Jeremy C. Andrus ,  Ahmed Bougacha ,  Peter Cooper ,  Jacques Fortier ,  Louis G. Gerbarg ,  James H. Grosbach ,  Robert J. McCall ,  Daniel A. Steffen ,  Justin R. Unger

IPC: G06F21/44 ,  G06F15/78 ,  G06F21/78 ,  G06F21/54 ,  G06F12/109 ,  G06F21/56 ,  G06F21/12 ,  H04L9/32 ,  H04L9/08 ,  H04L9/40

CPC classification number: G06F21/44 ,  G06F12/109 ,  G06F15/7807 ,  G06F21/125 ,  G06F21/54 ,  G06F21/565 ,  G06F21/78 ,  H04L9/0861 ,  H04L9/3236 ,  H04L9/3247 ,  H04L63/06

Abstract: Embodiments described herein enable the interoperability between processes configured for pointer authentication and processes that are not configured for pointer authentication. Enabling the interoperability between such processes enables essential libraries, such as system libraries, to be compiled with pointer authentication, while enabling those libraries to still be used by processes that have not yet been compiled or configured to use pointer authentication.

公开(公告)号：US11675919B2

公开(公告)日：2023-06-13

申请号：US16683238

申请日：2019-11-13

Applicant: Apple Inc.

Inventor： Ananthakrishna Ramesh ,  Andrew S. Terry ,  Wade Benson ,  Jeremy C. Andrus

IPC: H04L29/06 ,  G06F21/62 ,  G06F21/44 ,  H04L9/08

CPC classification number: G06F21/6218 ,  G06F21/44 ,  H04L9/0866

Abstract: Techniques are disclosed relating to securely storing data at a computing device that is managed by an external entity. In some embodiments, a computing device maintains a first file system volume having data that is accessible to a user of the computing device and that is not managed by an entity external to the computing device. The computing device receives, from the entity external, a first request to configure the computing device to store data that is accessible to the user and managed by the external entity. In response to the first request, the computing device creates a second distinct file system volume to store the data managed by the external entity. In response to a second request from the external entity, the computing device subsequently removes the second file system volume.

公开(公告)号：US20210318909A1

公开(公告)日：2021-10-14

申请号：US17208928

申请日：2021-03-22

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  John G. Dorsey ,  James M. Magee ,  Daniel A. Chimene ,  Cyril de la Cropte de Chanterac ,  Bryan R. Hinch ,  Aditya Venkataraman ,  Andrei Dorofeev ,  Nigel R. Gamble ,  Russell A. Blaine ,  Constantin Pistol ,  James S. Ismail

IPC: G06F9/50 ,  G06F9/48 ,  G06F1/3234 ,  G06F1/329 ,  G06F1/3296 ,  G06F9/38 ,  G06F9/26 ,  G06F9/54 ,  G06F1/20 ,  G06F1/324

Abstract: Systems and methods are disclosed for scheduling threads on a processor that has at least two different core types, such as an asymmetric multiprocessing system. Each core type can run at a plurality of selectable voltage and frequency scaling (DVFS) states. Threads from a plurality of processes can be grouped into thread groups. Execution metrics are accumulated for threads of a thread group and fed into a plurality of tunable controllers for the thread group. A closed loop performance control (CLPC) system determines a control effort for the thread group and maps the control effort to a recommended core type and DVFS state. A closed loop thermal and power management system can limit the control effort determined by the CLPC for a thread group, and limit the power, core type, and DVFS states for the system. Deferred interrupts can be used to increase performance.

公开(公告)号：US20200380149A1

公开(公告)日：2020-12-03

申请号：US16683238

申请日：2019-11-13

Applicant: Apple Inc.

Inventor： Ananthakrishna Ramesh ,  Andrew S. Terry ,  Wade Benson ,  Jeremy C. Andrus

IPC: G06F21/62 ,  H04L9/08 ,  G06F21/44

Abstract: Techniques are disclosed relating to securely storing data at a computing device that is managed by an external entity. In some embodiments, a computing device maintains a first file system volume having data that is accessible to a user of the computing device and that is not managed by an entity external to the computing device. The computing device receives, from the entity external, a first request to configure the computing device to store data that is accessible to the user and managed by the external entity. In response to the first request, the computing device creates a second distinct file system volume to store the data managed by the external entity. In response to a second request from the external entity, the computing device subsequently removes the second file system volume.

公开(公告)号：US20200379925A1

公开(公告)日：2020-12-03

申请号：US16882087

申请日：2020-05-22

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  Joseph R. Auricchio ,  Russell A. Blaine ,  Daniel A. Chimene ,  Simon M. Douglas ,  Landon J. Fuller ,  Yevgen Goryachok ,  John K. Kim-Biggs ,  Arnold S. Liu ,  James M. Magee ,  Daniel A. Steffen ,  Roberto G. Yepez

IPC: G06F13/10 ,  G06F13/40 ,  G06F9/54 ,  G06F9/445 ,  G06F13/16

Abstract: Embodiments described herein provide techniques to manage drivers in a user space in a data processing system. One embodiment provides a data processing system configured perform operations, comprising discovering a hardware device communicatively coupled to the communication bus, launching a user space driver daemon, establishing an inter-process communication (IPC) link between a first proxy interface for the user space driver daemon and a second proxy interface for a server process in a kernel space, receiving, at the first proxy interface, an access right to enable access to a memory buffer in the kernel space, and relaying an access request for the memory buffer from the user space driver daemon via a third-party proxy interface to enable the user space driver daemon to access the memory buffer, the access request based on the access right.

公开(公告)号：US20200082066A1

公开(公告)日：2020-03-12

申请号：US16539356

申请日：2019-08-13

Applicant: Apple Inc.

Inventor： Bernard J. Semeria ,  Devon S. Andrade ,  Jeremy C. Andrus ,  Ahmed Bougacha ,  Peter Cooper ,  Jacques Fortier ,  Louis G. Gerbarg ,  James H. Grosbach ,  Robert J. McCall ,  Daniel A. Steffen ,  Justin R. Unger

IPC: G06F21/44 ,  H04L9/32 ,  G06F15/78

Abstract: Embodiments described herein enable the interoperability between processes configured for pointer authentication and processes that are not configured for pointer authentication. Enabling the interoperability between such processes enables essential libraries, such as system libraries, to be compiled with pointer authentication, while enabling those libraries to still be used by processes that have not yet been compiled or configured to use pointer authentication.

公开(公告)号：US20180349186A1

公开(公告)日：2018-12-06

申请号：US15870764

申请日：2018-01-12

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  John G. Dorsey ,  James M. Magee ,  Daniel A. Chimene ,  Cyril de la Cropte de Chanterac ,  Bryan R. Hinch ,  Aditya Venkataraman ,  Andrei Dorofeev ,  Nigel R. Gamble ,  Russell A. Blaine ,  Constantin Pistol

IPC: G06F9/48 ,  G06F9/50

Abstract: Systems and methods are disclosed for scheduling threads on a processor that has at least two different core types, such as an asymmetric multiprocessing system. Each core type can run at a plurality of selectable voltage and frequency scaling (DVFS) states. Threads from a plurality of processes can be grouped into thread groups. Execution metrics are accumulated for threads of a thread group and fed into a plurality of tunable controllers for the thread group. A closed loop performance control (CLPC) system determines a control effort for the thread group and maps the control effort to a recommended core type and DVFS state. A closed loop thermal and power management system can limit the control effort determined by the CLPC for a thread group, and limit the power, core type, and DVFS states for the system. Deferred interrupts can be used to increase performance.

公开(公告)号：US20220027452A1

公开(公告)日：2022-01-27

申请号：US17497826

申请日：2021-10-08

Applicant: Apple Inc.

Inventor： Bernard J. Semeria ,  Devon S. Andrade ,  Jeremy C. Andrus ,  Ahmed Bougacha ,  Peter Cooper ,  Jacques Fortier ,  Louis G. Gerbarg ,  James H. Grosbach ,  Robert J. McCall ,  Daniel A. Steffen ,  Justin R. Unger

IPC: G06F21/44 ,  H04L9/32 ,  G06F15/78 ,  G06F21/54 ,  G06F21/78 ,  H04L29/06 ,  H04L9/08 ,  G06F12/109 ,  G06F21/56 ,  G06F21/12

Abstract: Embodiments described herein enable the interoperability between processes configured for pointer authentication and processes that are not configured for pointer authentication. Enabling the interoperability between such processes enables essential libraries, such as system libraries, to be compiled with pointer authentication, while enabling those libraries to still be used by processes that have not yet been compiled or configured to use pointer authentication.

公开(公告)号：US11144631B2

公开(公告)日：2021-10-12

申请号：US16539356

申请日：2019-08-13

Applicant: Apple Inc.

Inventor： Bernard J. Semeria ,  Devon S. Andrade ,  Jeremy C. Andrus ,  Ahmed Bougacha ,  Peter Cooper ,  Jacques Fortier ,  Louis G. Gerbarg ,  James H. Grosbach ,  Robert J. McCall ,  Daniel A. Steffen ,  Justin R. Unger

IPC: G06F21/44 ,  G06F15/78 ,  G06F9/32 ,  H04L9/32 ,  G06F21/54 ,  G06F21/78 ,  H04L29/06 ,  H04L9/08 ,  G06F12/109 ,  G06F21/56 ,  G06F21/12

Abstract: Embodiments described herein enable the interoperability between processes configured for pointer authentication and processes that are not configured for pointer authentication. Enabling the interoperability between such processes enables essential libraries, such as system libraries, to be compiled with pointer authentication, while enabling those libraries to still be used by processes that have not yet been compiled or configured to use pointer authentication.