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From: lac@lac.ee.ncku.edu.tw (Lai An-Chow)
Subject: Doing user-level scheduler on SPARC.
Message-ID: <1993Feb16.074933.5537@dec8.ncku.edu.tw>
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Date: Tue, 16 Feb 1993 07:49:33 GMT

To whom it may concern,

	Hello ! I'm doing a research in implementing user-level scheduler
on SPARC machine. I encounter a problem that I can't save up the entire
register windows during context switch of user-level threads. According
my knowledge, I must enter supervisor mode during saving or restoring
register windows, however my scheduler have to do this thing in user mode,
so I'm wondering if there is a method to let my scheduler enter supervisor
mode temporarily for this purpose. I'll be very appreciate if some one can
help me.

	Thank you !
