« previous next »
Pages: [1]

Author Topic: Privilege level  (Read 17147 times)

Offline alexBishop

  • Jr. Member
  • *
  • Posts: 10
Privilege level
« on: January 20, 2011, 10:14:54 AM »
How do I change the privilege level and also the i/o privilege level?  ???
Logged

Offline Frank Kotler

  • NASM Developer
  • Hero Member
  • *****
  • Posts: 2667
  • Country: us
Re: Privilege level
« Reply #1 on: January 21, 2011, 02:15:01 PM »
I believe privilege level is determined by a couple bits in the descriptor. I/O privilege level is a bitmap, I think. The Intel/AMD manuals should have complete information. For "system" code (as opposed to "user" code), the OS development guys have got a lot of information:

http://wiki.osdev.org/Main_Page

...maybe start with "Context switching" for this(?)...

Best,
Frank

Logged
Pages: [1]
« previous next »