公开(公告)号：US11157635B2

公开(公告)日：2021-10-26

申请号：US16118245

申请日：2018-08-30

Applicant: QUALCOMM Incorporated

Inventor： James Brehove ,  Vijayalakshmi Raveendran ,  Olav Haugan ,  Britton Kendall Bigelow ,  Kavita Paryani

IPC: G06F21/60 ,  G06F9/455 ,  G06F13/10

Abstract: Various embodiments include methods and devices for implementing secure peripheral interface disablement on a computing device. Various embodiments may include receiving a trigger to disable a peripheral interface associated with a peripheral device of the computing device, identifying a physical address of the peripheral interface, and securely removing a mapping of an intermediate physical address of the peripheral interface to the physical address of the peripheral interface.

公开(公告)号：US20180136967A1

公开(公告)日：2018-05-17

申请号：US15354791

申请日：2016-11-17

Applicant: QUALCOMM Incorporated

Inventor： Samar Asbe ,  Qazi Bashir ,  Vipul Gandhi ,  Chris Henroid ,  Mitchel Allen Humpherys ,  Olav Haugan ,  Daren Hall ,  Adam Openshaw ,  Priyesh Sanghvi ,  Brijen Raval

IPC: G06F9/46 ,  G06F21/53 ,  G06F9/455

CPC classification number: G06F9/45558 ,  G06F21/53 ,  G06F21/79 ,  G06F2009/45587

Abstract: In an aspect, an apparatus that includes a first security domain and at least a second security domain obtains, at a virtual machine of the first security domain, a stream identifier associated with the second security domain. The apparatus generates, at the virtual machine of the first security domain, a command to map the stream identifier associated with the second security domain to a first address translation context. The apparatus maps, at a hypervisor device, the first address translation context to a second address translation context that is associated with the second security domain of the stream identifier. The apparatus processes a stream of memory access transactions that includes the stream identifier based on at least the first address translation context or the second address translation context.

公开(公告)号：US10514943B2

公开(公告)日：2019-12-24

申请号：US15354791

申请日：2016-11-17

Applicant: QUALCOMM Incorporated

Inventor： Samar Asbe ,  Qazi Bashir ,  Vipul Gandhi ,  Chris Henroid ,  Mitchel Allen Humpherys ,  Olav Haugan ,  Daren Hall ,  Adam Openshaw ,  Priyesh Sanghvi ,  Brijen Raval

IPC: G06F9/455 ,  G06F21/53 ,  G06F21/79

Abstract: In an aspect, an apparatus that includes a first security domain and at least a second security domain obtains, at a virtual machine of the first security domain, a stream identifier associated with the second security domain. The apparatus generates, at the virtual machine of the first security domain, a command to map the stream identifier associated with the second security domain to a first address translation context. The apparatus maps, at a hypervisor device, the first address translation context to a second address translation context that is associated with the second security domain of the stream identifier. The apparatus processes a stream of memory access transactions that includes the stream identifier based on at least the first address translation context or the second address translation context.