Privilege level checking instruction for implementing a secure h

Details Privilege level checking instruction for implementing a secure h Privilege level checking instruction for implementing a secure h

1985-10-28

1989-02-28

Williams, Jr., Archie E.

Boots, shoes, and leggings

178 29, 178 37, G06F 1214

Patent

active

048091600

ABSTRACT:
A low overhead way for insuring that only routines of sufficient privilege can execute on a secured page of memory in an hierarchial computer system, and for raising the privilege level of a low privilege process in an orderly and secure way is presented. This is done through the execution of a single "gateway" branch instruction standing between a procedure call by a lower privileged routine, such as a user program, and an operating system itself.

REFERENCES:
patent: 4087856 (1978-05-01), Attanasio
patent: 4104721 (1978-08-01), Markstein
patent: 4346436 (1982-08-01), Wise
patent: 4409655 (1983-10-01), Wallach et al.
patent: 4434464 (1984-02-01), Suzuki et al.
patent: 4471163 (1984-09-01), Donald et al.

Affiliated with

Also associated with

Rating

Privilege level checking instruction for implementing a secure h does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Privilege level checking instruction for implementing a secure h, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Privilege level checking instruction for implementing a secure h will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1373156