Privilege levels, rings, and fooling the guest OS

Franklin · Dec 11, 2008

In order to keep applications from usurping any part of the OS's privileged access to system hardware, processors provide a mechanism that allows different programs to run at different privilege levels. These privilege levels are called rings, and they're arranged in a hierarchy that starts with Ring 0 (the lowest, most trusted level) and extends upwards through one or more progressively less-trusted Rings (e.g., Ring 1, Ring 2, and so on).
Click to expand...

Ars Technica Article

Swordfish_ · Dec 14, 2008

Thank you.

This is very well discussed in some White Papers regarding both Intel VT-d and AMD Pacifica (Nested Page Tables).

Log in or Sign up

Privilege levels, rings, and fooling the guest OS

Franklin Registered Member

Swordfish_ Registered Member

Log in or Sign up

Privilege levels, rings, and fooling the guest OS

Franklin Registered Member

Swordfish_ Registered Member

Useful Searches