Date: Sat, 8 May 1999 08:08:42 +1000 From: "Andrew Reilly" <andrew@lake.com.au> To: Zach Brown <zab@zabbo.net> Cc: Matthew Dillon <dillon@apollo.backplane.com>, Andrew Reilly <andrew@lake.com.au>, freebsd-hackers@FreeBSD.ORG Subject: Re: Pentium-III and FreeBSD? Message-ID: <19990508080842.A11385@gurney.reilly.home> In-Reply-To: <Pine.LNX.4.10.9905071111510.1635-100000@hoser>; from Zach Brown on Fri, May 07, 1999 at 11:15:53AM -0400 References: <199905070056.RAA39946@apollo.backplane.com> <Pine.LNX.4.10.9905071111510.1635-100000@hoser>
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On Fri, May 07, 1999 at 11:15:53AM -0400, Zach Brown wrote: > > In regards to FP: The best place for extreme FP optimization is in > > a high level FP library, not in native compiler-produced code. The > > yes. That's pretty much all I really want to do, but the catch with the P-III is that the new SIMD registers do _not_ map over the fp registers, the way MMX did. They are new processor state. So we need OS support to save and restore them on context switches. Intel supplies a "patch" for NT that does this, appently. Should be an interesting introduction to the bottom levels of the kernel. -- Andrew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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