Arm Limited

Google Inc.

Grape Technology Group, Inc.

Thomas Edward Roberts

Max John Batley

Cédric Denis Robert Airaud

Ian Michael Caulfield

Alex James Waugh

Kim Richard Schuttenberg

Timothy Jay Chen

Richard F Bryant

Lilian Atieno Hutchins

Paul Butcher

Dominic Binks

Frederick Cheung

Daniel Jaeggi

Matthew Jacobs

An integrated circuit chip can provide protection with registers of a register file. A processor can be part of general or security-oriented (e.g., root-of-trust (RoT)) circuitry. In described implementations, the processor includes multiple register blocks for storing multiple register values. The processor also includes multiple integrity blocks for storing multiple integrity codes. A respective integrity block is associated with a respective register block. The respective integrity block can store a respective integrity code that is derived from a respective register value that is stored in the respective register block. The integrity code can enable detection or correction of one or more corrupted bits in the register value. An integrity controller of the processor can monitor the register value regularly or in response to an access by an execution unit. The controller can take a protective action if corruption is detected. This enables information protection to extend to processor execution units.

Register file protection

An apparatus comprises processing circuitry to process data access operations specifying a virtual address of data to be loaded from or stored to a data store, and proxy identifier determining circuitry to determine a proxy identifier for a data access operation to be processed by the data access circuitry, the proxy identifier having fewer bits than a physical address corresponding to the virtual address specified by the data access operation. The processing circuitry comprises at least one buffer to buffer information (including the proxy identifier) associated with one or more pending data access operations awaiting processing. Address translation circuitry determines the physical address corresponding to the virtual address specified for a data access operation after that data access operation has progressed beyond said at least one buffer.

Method and apparatus for utilizing proxy identifiers for merging of store operations

Data storage apparatus comprises detection circuitry configured to detect a match between a multi-bit reference memory address and a test address, the test address being a combination of a multi-bit base address and a multi-bit address offset, the detection circuitry comprising: a comparator configured to compare, as a first comparison, a first subset of bits of the reference memory address with a combination of the corresponding first subset of bits of the base address and the corresponding first subset of bits of the address offset; the comparator being configured to compare, as a second comparison, a second, different subset of bits of the reference memory address with the corresponding second subset of bits of the base address; a detector configured to detect the match between the reference memory address and the test address when both of the first comparison and the second comparison detect a respective match; and control circuitry configured to control operation of the data storage apparatus in dependence upon the reference memory address when a match is detected by the detector.

Data storage

A computer system is provided for automatically answering natural language questions. The system has an input to receive natural language questions and a data store to record linked pairs of questions and corresponding answers. A matcher is configured to compare a received natural language question with the linked question and answer pairs, and an output transfers the received natural language question to a researcher if no matches are found. The system links pairs of questions and corresponding answers into groups, to enable the generation of a prototypical answer for each group of pairs of questions and answers.

Computer system for automatically answering natural language questions

Growing community of inventors

Cambridge, United Kingdom

Thomas Edward Roberts