Date: Thu, 6 May 2004 12:09:03 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Jason Andresen <jandrese@mitre.org> Cc: freebsd-current@freebsd.org Subject: Re: nVidia FX Support? Message-ID: <Pine.BSF.4.21.0405061207490.82978-100000@InterJet.elischer.org> In-Reply-To: <409A5F5F.1050202@mitre.org>
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On Thu, 6 May 2004, Jason Andresen wrote: > Kenneth Culver wrote: > > > Quoting Jason Andresen <jandrese@mitre.org>: > > > >> Will Andrews wrote: > >> > >>> On Wed, May 05, 2004 at 11:28:57AM +0200, Dimitry Andric wrote: > >>> > >>>> The problem is that NVidia hasn't updated its binary-only FreeBSD > >>>> driver since July 1st, 2003. Any cards released after this date will > >>>> not work properly, or at all, with this driver. So please go bug > >>>> NVidia. :) > >>>> > >>>> But, see also this thread: > >>>> http://lists.freebsd.org/pipermail/freebsd-threads/2003-June/000530.html > >>>> > >>>> > >>>> which might explain why it takes forever for new drivers to arrive. :( > >> > >> > >> Ugh, reading through that thread I got a bad bad feeling that it will be > >> ages before we see another NVidia driver. The NVidia engineer is > >> unwilling to proceed without his %gs register, and the FreeBSD engineers > >> are unwilling to give it to him because the fast thread switching needs > >> it for good performance. The NVidia engineers needs the %gs register > >> for good performance, and will not release drivers that are 10-50% > >> slower than the Windows ones. > >> > >> It looks like the whole situation is at a standstill at the moment, > >> which means we get no new drivers until the whole thing is sorted out. > >> It's really distressing to see how frustrated the NVidia engineer was by > >> the end of the thread. > >> > > I'm pretty sure that the FreeBSD people are working on TLS, which will > > allow the > > nvidia people to be happy. > > Maybe I'm reading it wrong, but it seems like TLS is what got them in > all of this trouble in the first place. It seems that FreeBSD's > implementation uses the %gs register, which NVidia also wants to use. %gs is not theirs to use.. linux also uses the %gs register for thread identification however when TLS is implemented then they will 'piggyback' on th thread sytem, (so to speak). > > > -- > \ |_ _|__ __|_ \ __| Jason Andresen jandrese@mitre.org > |\/ | | | / _| Network and Distributed Systems Engineer > _| _|___| _| _|_\___| Office: 703-883-7755 > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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