Marius Strobl 7d7ce7f24e Do as the USII CPU manual suggests and leave interrupts enabled
for a bit before retrying to resend an IPI in order to avoid
deadlocks if the other CPU is also trying to send one.
OpenSolaris uses a delay of 1 microsecond here but waiting 2
microseconds with interrupts enabled like Linux does shouldn't
hurt but is a bit safer.

MFC after:	1 day
2006-09-03 21:20:21 +00:00
..
2006-06-05 17:48:54 +00:00