Date: Fri, 6 Sep 2002 21:16:06 -0700 From: "David O'Brien" <obrien@FreeBSD.ORG> To: Kenneth Culver <culverk@yumyumyum.org> Cc: Kris Kennaway <kris@obsecurity.org>, Maxime Henrion <mux@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: HEADS UP: SSE instructions (Re: cvs commit: src/share/mk bsd.cpu.mk) Message-ID: <20020907041606.GA7708@dragon.nuxi.com> In-Reply-To: <20020906212438.J46717-100000@alpha.yumyumyum.org> References: <20020907012324.GA84837@xor.obsecurity.org> <20020906212438.J46717-100000@alpha.yumyumyum.org>
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On Fri, Sep 06, 2002 at 09:28:28PM -0400, Kenneth Culver wrote: > > Note that you'll need to have 'options CPU_ENABLE_SSE' in your kernel > > configuration file if you have a SSE-capable CPU, otherwise you'll get > > SIGILL from certain applications (e.g. ncurses) > > What if you don't want to do this though? Athlon XP processors support SSE > instructions, but not at the same time as 3dnow instructions. The > processor has to switch modes or something like that. What if a user wants > to actually use the 3dnow instructions? Does this mean that on an athlon > XP which supports SSE instructions, if you don't want to enable them > you'll catch SIGILL and die when using those "certain apps?" Just > wondering. I will get an AMD authoritative answer to this question. Please wait a week before discussing the issue more. -- David To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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