DE use

John Leuner jewel at
Thu May 2 14:06:05 CEST 2002

On Thu, May 02, 2002 at 12:05:35PM +0200, Espen Skoglund wrote:
> [luke hart]
> > All,
> > The latest version of L4 (from CVS) and probably earlier ones, check
> > for the debug extensions. Does it actually use them? I ask this
> > since Bochs, does not set the DE bit in the CPUID or support these
> > extensions.
> > I have done a search for usage of DRx (where x is 0-7) in the
> > source, but couldn't find any references. Is it safe to just remove
> > the check for DE?
> In Hazelnut we have no references to dr4 and dr5.  Checking for the DE
> flag should therefore not be necessary.

I'm also trying to run Hazelnut under bochs.

Luke, will you let me know if you have any success?

John Leuner

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