公开(公告)号：US10310882B2

公开(公告)日：2019-06-04

申请号：US15172529

申请日：2016-06-03

Applicant: QUALCOMM Incorporated

Inventor： Thomas Zeng ,  Azzedine Touzni ,  Philip Mueller, Jr. ,  Piyush Patel

IPC: G06F9/455 ,  G06F9/50 ,  G06F12/10 ,  G06F12/14 ,  G06F12/1009 ,  G06F12/1027 ,  G06F21/44 ,  G06F21/53

Abstract: In the various aspects, virtualization techniques may be used to improve performance and reduce the amount of power consumed by selectively enabling a hypervisor operating on a computing device during sandbox sessions. In the various aspects, a high-level operating system may allocate memory such that its intermediate physical addresses are equal to the physical addresses. When the hypervisor is disabled, the hypervisor may suspend second stage translations from intermediate physical addresses to physical addresses. During a sandbox session, the hypervisor may be enabled and resume performing second stage translations.

公开(公告)号：US09396070B2

公开(公告)日：2016-07-19

申请号：US14484125

申请日：2014-09-11

Applicant: QUALCOMM INCORPORATED

Inventor： Jeffrey David Shabel ,  Philip Mueller, Jr. ,  Zhurang Zhao ,  Carl Victor Streeter ,  Rashmi Kulkarni

IPC: G06F11/00 ,  G06F11/14 ,  G06F11/30

CPC classification number: G06F11/141 ,  G06F1/3206 ,  G06F1/3215 ,  G06F1/3287 ,  G06F1/3293 ,  G06F11/1428 ,  G06F11/3062 ,  Y02D10/122 ,  Y02D10/171

Abstract: Systems and methods for external access detection and recovery in a subsystem of a system-on-a-chip (SoC) in a portable computing device (PCD) are presented. In operation, a subsystem of the SoC is operated in an internal mode independently of the SoC while the SoC is in a low power state, such as a non-functional or zero power state or mode. The subsystem comprises a processor in communication with a memory, a sensor, and a monitor module. The monitor module detects when the processor of the subsystem requests access to a component external to the subsystem. In response to this detected request, the SoC is caused to enter into a full power state or mode, and the subsystem is caused to exit the internal mode of operation.

Abstract translation: 提出了便携式计算设备（PCD）中的片上系统（SoC）的子系统中外部访问检测和恢复的系统和方法。 在操作中，SoC的子系统在独立于SoC的内部模式下操作，而SoC处于低功率状态，例如非功能或零功率状态或模式。 子系统包括与存储器，传感器和监视器模块通信的处理器。 监视器模块检测子系统的处理器何时请求访问子系统外部的组件。 响应于该检测到的请求，使SoC进入全功率状态或模式，使子系统退出内部操作模式。