CPU protection ring

GPTKB entity

Statements (23)
Predicate Object
gptkbp:instanceOf computer security concept
gptkbp:alsoKnownAs protection ring
gptkbp:commonIn gptkb:x86_architecture
gptkbp:controls access to hardware
access to memory
execution of instructions
gptkbp:enforcedBy gptkb:microprocessor
https://www.w3.org/2000/01/rdf-schema#label CPU protection ring
gptkbp:implementedIn gptkb:personal_computer
gptkbp:numberOfRooms gptkb:Ring_3
Ring 0
Ring 1
Ring 2
gptkbp:originatedIn gptkb:Multics_operating_system
gptkbp:provides hardware-enforced access control
gptkbp:purpose isolation of privilege levels
gptkbp:relatedTo privilege separation
operating system security
gptkbp:Ring_0 kernel mode
gptkbp:Ring_3 user mode
gptkbp:usedIn gptkb:architecture
gptkbp:bfsParent gptkb:Ring_3
gptkbp:bfsLayer 7