Date: Thu, 11 Apr 2002 10:50:54 +0100 From: David Malone <dwmalone@maths.tcd.ie> To: Denis Serenyi <dserenyi@panasas.com> Cc: freebsd-hackers@freebsd.org Subject: Re: SSE bcopy Message-ID: <20020411095054.GA66007@walton.maths.tcd.ie> In-Reply-To: <B3B2200B-4CD1-11D6-9B98-003065675568@panasas.com> References: <B3B2200B-4CD1-11D6-9B98-003065675568@panasas.com>
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On Wed, Apr 10, 2002 at 03:24:20PM -0700, Denis Serenyi wrote: > After searching the hackers archives, I'm guessing that this is because > FreeBSD 4.3 does not execute the instructions at boot time to enable SSE > instructions to be executed, and also because FreeBSD 4.3 does not save > the 128-bit SIMD registers on context switches. > > Am I correct in this assessment? Yep. > It also seems like this support has been added to FreeBSD 4.5. Is this > correct? Yes - it was added before 4.4 I think. > Assuming yes, in what release was SSE support added to FreeBSD? Has > anyone done a patch that can be applied to FreeBSD 4.3, or are the > changes non-trivial? The commit message mentions: http://www.issei.org/issei/FreeBSD/sse.html http://kobe1995.net/~kaz/FreeBSD/SSE.en.html and I think there are patches available for 4.3 from one of those sites. David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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