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Date:      Mon, 13 Dec 2004 18:49:05 -0700
From:      Scott Long <scottl@freebsd.org>
To:        obrien@freebsd.org
Cc:        cvs-src@freebsd.org
Subject:   Re: cvs commit: src/sys/i386/pci pci_cfgreg.c
Message-ID:  <41BE4691.9080104@freebsd.org>
In-Reply-To: <20041214013304.GB3352@dragon.nuxi.com>
References:  <200412060827.iB68RAmE058040@repoman.freebsd.org> <20041213191239.GB19680@dragon.nuxi.com> <xzpbrcxzx88.fsf@dwp.des.no> <200412131416.54087.peter@wemm.org> <20041214013304.GB3352@dragon.nuxi.com>

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David O'Brien wrote:
> On Mon, Dec 13, 2004 at 02:16:53PM -0800, Peter Wemm wrote:
> 
>>On Monday 13 December 2004 01:47 pm, Dag-Erling Sm?rgrav wrote:
>>
>>>"David O'Brien" <obrien@FreeBSD.org> writes:
>>>
>>>>At the moment I don't know of anyone with an AMD64 PCI Express
>>>>motherboard.
>>>
>>>The Celestica A8440 has dual onboard PCI-X NICs and two PCI-X slots.
>>>Surely someone in the project should be able to get their hands on
>>>one?  I for one would love to have one for the tinderbox...
>>>
>>>DES
>>
>>Just for clarity, we were talking about PCI-Express, not PCI-X.
>>
>>BTW, I think it is amusing that the only machines readily available that 
>>have PCI-Express to run FreeBSD/amd64 on are Intel systems...
> 
> 
> Why?
> Today there is zero benefit to PCI-Express vs. AGP 8x or PCI-X 133mhz.
> 

There is a benefit from the new generation of devices that are coming 
out for only PCI-Express and have features and performance that will not
be matched in their PCI-X counterparts.  While it's always fun for
FreeBSD to be chronically behind the curve in device support, I'd like
to experiment with breaking that feature and seeing if anyone has a
heart attack when their bleeding edge NIC or storage card works the day
that they buy it, instead of months/years later.

Scott



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