Re: Virtual Virtualizers

Jesus Cea wrote:

(snip)

That was true in the original 68000. In 68010 and up, Motorola solved
the issue making the supervisor bit access "protected". So, a code
trying to determine if it was "supervisor" could trap and its VM parent
could provide it "false" information, fooling it to think it was on control.

I am pretty sure I read about a leak on the 68020. I think there are some flags that can be read after they are stored on the stack. I don't
have any 68020 books to check, though.

-- glen

.

Relevant Pages

  • Re: specialization momentum
    ... much snip ... listen to an effort by you to communicate something outside the box ... For your sake, even if you have shut your mind to my mind, before ... Oh, what about the supervisor. ...
    (sci.bio.evolution)
  • Re: Trying to avoid listing bad supervisors on job apps
    ... Don't create any unnecessary problems. ... I think it might be useful to have a carefully structured conversation with a supervisor as to how he/she perceives you, and do it before the sparks fly. ...
    (sci.research.careers)
  • Re: Virtual Virtualizers
    ... the issue making the supervisor bit access "protected". ... trying to determine if it was "supervisor" could trap and its VM parent ... all 6800x0 machines save PC and SR on the supervisor stack upon ... FPU instruction. ...
    (comp.arch)
  • Re: Need VPN Firewall security advice
    ... > you all feel comfortable with what I am planning? ... The worst that can happen is that they go to your supervisor and that ... he overrules you, but hey, then it's out of your hands, isn't it? ...
    (comp.os.linux.security)
  • Re: Anybody use Linux on Dells?
    ... On 10/15/04 05:41, Supervisor wrote: ... > and disappear into the background, Dell seems to be fighting the hook. ... > Nothing major, but just that everytime there is a problem, it is on a Dell. ...
    (comp.os.linux.misc)