DE use

Espen Skoglund esk at ira.uka.de
Thu May 2 12:05:35 CEST 2002


[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.

	eSk





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