From owner-cvs-all  Thu Oct 11 11:22: 5 2001
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Date: Thu, 11 Oct 2001 14:21:58 -0400 (EDT)
From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
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To: John Baldwin <jhb@FreeBSD.org>
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Subject: RE: cvs commit: src/sys/i386/include atomic.h
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<<On Thu, 11 Oct 2001 11:16:24 -0700 (PDT), John Baldwin <jhb@FreeBSD.org> said:

> of atomic_cmpset() that works on a Dual Pentium II won't work on the 386
> because it will result in an illegal instruction fault since the 386 doesn't
> have cmpxchg.  One workaround is what the run time linker does for its locks

A better workaround is for the kernel to emulate the instruction.  It
won't be fast, but it will work.

-GAWollman


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