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1. WO2020222804 - SYSTEM MANAGEMENT MEMORY COHERENCY DETECTION

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Publication Number WO/2020/222804
Publication Date 05.11.2020
International Application No. PCT/US2019/029928
International Filing Date 30.04.2019
IPC
G06F 21/60 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
G06F 21/72 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
71to assure secure computing or processing of information
72in cryptographic circuits
CPC
G06F 21/64
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
64Protecting data integrity, e.g. using checksums, certificates or signatures
G06F 21/79
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
78to assure secure storage of data
79in semiconductor storage media, e.g. directly-addressable memories
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • GUNYUZLU, Mason
  • ALI, Valiuddin
  • CRAIG, Robert
  • RICHARDS, Tevin
  • BRAMLEY, Richard
  • PINHEIRO, Endrigo Nadin
Agents
  • JENNEY, Michael
  • FOR ADDITIONAL NAMES, Please See attached General Power of Attorney
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM MANAGEMENT MEMORY COHERENCY DETECTION
(FR) DÉTECTION DE COHÉRENCE DE MÉMOIRE DE GESTION DE SYSTÈME
front page image
Abstract
(EN)
In an example, a system includes a firmware controller to initiate a SM execution mode of the system. The firmware controller scans memory for a process pool tag. The firmware controller compares the process pool tag to a set of operating system process pool tags and detects a coherency discrepancy between the process pool tag and the set of operating system process pool tags. The firmware controller exits the SM execution mode of the system.
(FR)
Selon un exemple de la présente invention, un système comprend un contrôleur de micrologiciel servant à déclencher un mode d'exécution SM du système. Le contrôleur de micrologiciel explore la mémoire à la recherche d'une étiquette de groupe de processus. Le contrôleur de micrologiciel compare l'étiquette de groupe de processus à un ensemble d'étiquettes de groupes de processus de système d'exploitation et détecte une divergence de cohérence entre l'étiquette de groupe de processus et l'ensemble d'étiquettes de groupes de processus de système d'exploitation. Le contrôleur de micrologiciel sort du mode d'exécution SM du système.
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