The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 28, 2021

Filed:

Apr. 06, 2017
Applicant:

Arm Ip Limited, Cambridge, GB;

Inventors:

Milosch Meriac, Cambridge, GB;

Alessandro Angelino, London, GB;

Assignee:

ARM IP LIMITED, Cambridge, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/55 (2013.01); G06F 9/46 (2006.01); G06F 1/24 (2006.01); G06F 9/455 (2018.01);
U.S. Cl.
CPC ...
G06F 21/556 (2013.01); G06F 1/24 (2013.01); G06F 9/455 (2013.01); G06F 9/461 (2013.01); G06F 2221/031 (2013.01);
Abstract

A technology for mutually isolating accessors of a shared electronic device from leakage of context data after a context switch comprises: on making the shared electronic device available to the plurality of accessors, establishing a portion of storage as an indicator location for the shared electronic device; when a first accessor requests use of the shared electronic device, writing at least one device-reset-required indicator to the indicator location; on switching context to a new context, after context save, when a second accessor requests use of the shared electronic device, resetting context data of the shared electronic device to a known state and reconciling the first device-reset-required indicator and a second device-reset-required indicator for the new context.


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