From owner-freebsd-alpha  Fri May 17  8:21:42 2002
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Date: Fri, 17 May 2002 11:20:40 -0400 (EDT)
To: John Baldwin <jhb@FreeBSD.org>
Cc: obrien@FreeBSD.org, alpha@FreeBSD.org,
	Jeff Roberson <jroberson@chesapeake.net>,
	Doug Rabson <dfr@nlsystems.com>, Alan Cox <alc@cs.rice.edu>
Subject: Re: gcc3 & alpha kernels
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John Baldwin writes:
 > 
 > Does it work fine if you back out my hack to alpha/include/atomic.h where
 > I commented out the zapnot in atomic_cmpset_32()?

Nope.  It still hangs on boot with the zapnot in place.

Am I confused, or is it just plain wrong to blindly zap the high bits?
Won't that always make the comparison fail for large unsigned values
that GCC didn't mess up on? (eg, *p = 0xffffffff).


Drew

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