公开(公告)号：US20210365389A1

公开(公告)日：2021-11-25

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: 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.