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From: Julian Elischer <julian@FreeBSD.org>
Subject: PERFORCE change 13300 for review
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http://people.freebsd.org/~peter/p4db/chv.cgi?CH=13300

Change 13300 by julian@julian_ref on 2002/06/22 20:10:22

	Upcalls need to unset the UNBOUND bit when scheduled.

Affected files ...

... //depot/projects/kse/sys/kern/kern_switch.c#54 edit

Differences ...

==== //depot/projects/kse/sys/kern/kern_switch.c#54 (text+ko) ====

@@ -132,6 +132,16 @@
 			TAILQ_REMOVE(&kg->kg_runq, td, td_runq);
 			if (kg->kg_last_assigned == td) 
 				kg->kg_last_assigned = NULL;
+			/*
+			 *  If we have started running an upcall,
+			 * Then TDF_UNBOUND WAS set because the thread was 
+			 * created without a KSE. Now that we have one,
+			 * and it is our time to run, we make sure
+			 * that BOUND semantics apply for the rest of
+			 * the journey to userland, and into the UTS.
+			 */
+			if (td->td_flags & TDF_UPCALLING) 
+				tdf->td_flags &= ~TDF_UNBOUND;
 		}
 		kg->kg_runnable--;
 		CTR2(KTR_RUNQ, "choosethread: td=%p pri=%d",

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