> I can't remember the exact > details, but there is one mode where the RDTSC instruction is *SUPPOSED* to fault > when not executing in ring 0. Its either real mode, v86 mode or both -- my mind is a > blank on this right now for some reason.
Well, I'm not sure on this either, but AFAIR RDTSC is legal everywhere (on a pentium+). It was RDMSR (Read Maschine Specific Register), which is a protected instruction, and only legal in ring0 or real mode. tom ---------- list options/archives/etc.: http://www.topica.com/lists/fd-dev unsubscribe: send blank email to: [EMAIL PROTECTED] ==^================================================================ This email was sent to: [email protected] EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Rv5.bbRv4l.YXJjaGl2 Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
