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- Privilege_level abstract "A privilege level in the x86 instruction set controls the access of the program currently running on the processor to resources such as memory regions, I/O ports, and special instructions. There are 4 privilege levels ranging from 0 which is the most privileged, to 3 which is least privileged. Most modern operating systems use level 0 for the kernel/executive, and use level 3 for application programs. Any resource available to level n is also available to level 0..n, so the privilege levels are "rings". It is not necessary to use all four privilege levels. Existing software that was designed to use only one or two levels of privilege can simply ignore the other levels offered by the 80386 and later processors. A one-level system should use privilege level zero; a two-level system should use privilege levels zero and three. Here level zero is called the Supervisor mode while level three is User mode. All versions of Windows below Windows XP use only the two-level system.The real mode programs in 8086 are executed at level 0 (highest privilege level) whereas virtual mode in 8086 executes all programs at level 3.".
- Privilege_level thumbnail Privilege_rings_hierarchy.jpg?width=300.
- Privilege_level wikiPageID "5519500".
- Privilege_level wikiPageRevisionID "570739852".
- Privilege_level hasPhotoCollection Privilege_level.
- Privilege_level subject Category:X86_architecture.
- Privilege_level comment "A privilege level in the x86 instruction set controls the access of the program currently running on the processor to resources such as memory regions, I/O ports, and special instructions. There are 4 privilege levels ranging from 0 which is the most privileged, to 3 which is least privileged. Most modern operating systems use level 0 for the kernel/executive, and use level 3 for application programs.".
- Privilege_level label "Privilege level".
- Privilege_level sameAs m.0dqmqw.
- Privilege_level sameAs Q7246304.
- Privilege_level sameAs Q7246304.
- Privilege_level wasDerivedFrom Privilege_level?oldid=570739852.
- Privilege_level depiction Privilege_rings_hierarchy.jpg.
- Privilege_level isPrimaryTopicOf Privilege_level.
