Date: Thu, 11 Oct 2001 14:21:58 -0400 (EDT) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: John Baldwin <jhb@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: RE: cvs commit: src/sys/i386/include atomic.h Message-ID: <200110111821.f9BILwb78417@khavrinen.lcs.mit.edu> In-Reply-To: <XFMail.011011111624.jhb@FreeBSD.org> References: <Pine.BSF.4.21.0110111150190.37124-100000@InterJet.elischer.org> <XFMail.011011111624.jhb@FreeBSD.org>
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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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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