ATTESTATION OF PROCESSING
    3.
    发明申请

    公开(公告)号:US20210240830A1

    公开(公告)日:2021-08-05

    申请号:US17048744

    申请日:2019-05-08

    Applicant: Arm IP Limited

    Inventor: Milosch MERIAC

    Abstract: There is provided a data processing apparatus that includes an input policy filter that receives input data and an input provenance that relates to the input data. The filter forwards some or all of the input data and the input provenance according to at least one input policy. A processing environment receives the input data forwarded by the input policy filter and processes the input data to generate output data A management environment produces an attestation of the processing environment and produces an output provenance based on the input provenance and the attestation. An output policy filter receives the output data and the output provenance and forwards the output data and the output provenance according to at least one output policy.

    CONTEXT DATA CONTROL
    4.
    发明申请

    公开(公告)号:US20190213329A1

    公开(公告)日:2019-07-11

    申请号:US16303291

    申请日:2017-04-06

    Applicant: Arm IP Limited

    CPC classification number: G06F21/556 G06F1/24 G06F9/455 G06F9/461 G06F2221/031

    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.

    METHODS FOR RECONCILING INTERRUPT CONFLICTS
    5.
    发明申请

    公开(公告)号:US20190213038A1

    公开(公告)日:2019-07-11

    申请号:US16303305

    申请日:2017-05-26

    Applicant: Arm IP Limited

    CPC classification number: G06F9/4837 G06F9/4812 G06F9/4887 G06F21/6209

    Abstract: A machine implemented method for prioritizing system interrupts in a processing system is provided. The method comprising: determining, at a supervisor module, for each interrupt, a relative interrupt priority in accordance with at least one interrupt parameter for said interrupt; prioritising, at said supervisor module, each said interrupt with respect to other interrupts of said system in compliance with said determined relative interrupt priority; and in response to a change to said at least one interrupt parameter during operation of said system, adjusting said determined relative interrupt priority, and re-prioritising each said interrupt with respect to said other interrupts of said system in compliance with said adjusted relative interrupt priority.

    ASSET UPDATE SERVICE
    6.
    发明申请

    公开(公告)号:US20200285457A1

    公开(公告)日:2020-09-10

    申请号:US16644720

    申请日:2018-10-17

    Applicant: ARM IP LIMITED

    Abstract: A method for managing an asset update service for one or more service requesters on a plurality of remote devices, the method comprising: receiving, at a management server, update data indicating an asset to be updated at one or more remote devices; receiving, at the management server, campaign data associated with the update data and indicating a subset of the remote devices to which an update is to be applied; and receiving, at the management server, a request to initiate the firmware update by transmitting to the subset of the remote devices an update communication indicating that the asset is to be retrieved for updating the asset of the remote device.

    SYSTEMS AND METHODS FOR MONITORING STATE TRANSITIONS

    公开(公告)号:US20190354153A1

    公开(公告)日:2019-11-21

    申请号:US15982560

    申请日:2018-05-17

    Applicant: Arm IP Limited

    Abstract: Broadly speaking, the present techniques provide methods, apparatus and systems for monitoring operation of a device. More particularly, the present techniques provide methods for monitoring operation of a device by observing state transitions which occur during the running of a device process following a firmware update, and either comparing the observed state transitions to a state transition map generated within the device or comparing the observed state transitions to a state transition model in, or associated with, the firmware update.

    CONTROLLING CONFIGURATION DATA STORAGE
    10.
    发明申请

    公开(公告)号:US20180225458A1

    公开(公告)日:2018-08-09

    申请号:US15749169

    申请日:2016-07-07

    Applicant: ARM IP LIMITED

    Abstract: A machine-implemented method is provided for securing a storage-equipped device against introduction of malicious configuration data into configuration data storage, the method comprising steps of receiving by the device, a trusted signal for modification of the configuration of the device; responsive to the receiving, placing the device into a restricted mode of operation and at least one of deactivating a service and rebooting the device, responsive to the placing the device into the restricted mode of operation and the deactivating or rebooting, permitting configuration data entry into a restricted portion of the configuration data storage. A corresponding device and computer program product are also described.

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