From owner-freebsd-hackers Thu Apr 11 2:51: 4 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by hub.freebsd.org (Postfix) with SMTP id 9D1B037B416 for ; Thu, 11 Apr 2002 02:50:56 -0700 (PDT) Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP id ; 11 Apr 2002 10:50:55 +0100 (BST) Date: Thu, 11 Apr 2002 10:50:54 +0100 From: David Malone To: Denis Serenyi Cc: freebsd-hackers@freebsd.org Subject: Re: SSE bcopy Message-ID: <20020411095054.GA66007@walton.maths.tcd.ie> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.25i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG 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