Non-Hierarchical Memory Access Control via Page Table Permissions

The patent segments the traditional hierarchical domain structure into a non-hierarchical flat domain model. Instead of organizing domains in a hierarchy with parent-child relationships, the system divides memory access control into independent domain-level permissions. Each domain can be independently configured with its own permission set, allowing fine-grained control over memory access without being constrained by hierarchical relationships. This segmentation enables flexible permission management while simplifying the overall system structure.

The patent applies local quality by assigning specific permission attributes to each domain independently. Instead of relying on hierarchical privileges where higher domains automatically have access to lower domains, the system assigns explicit read, write, and execute permissions to each domain for each memory region. This localized permission assignment ensures that security is maintained through explicit authorization rather than implicit hierarchical trust, making the system both manageable and secure.

The patent introduces dynamics by making domain permissions configurable and changeable rather than fixed by hierarchy. The flat domain model allows dynamic assignment of permissions to any domain at any time, independent of other domains. This dynamic permission management enables flexible adaptation to different security and access control requirements while maintaining a simple control mechanism through the flat structure.