cvs commit: src/sys/i386/pci pci_cfgreg.c

David O'Brien obrien at
Tue Dec 14 09:23:51 PST 2004

On Mon, Dec 13, 2004 at 08:43:33PM -0700, Scott Long wrote:
> Peter Wemm wrote:
> >On that note, we still barely support anything more from AMD's platform 
> >than the basic instruction set due to lack of documentation..  That's 
> >why FreeBSD/amd64 ran so quickly on the Intel hardware.   We only used 
> >the most basic features of the generic instruction set in an otherwise 
> >PC platform.  We don't take advantage of the IOMMU, the timers, etc.  
> >(Still no documentation).  I'd have expected AMD to push as hard as 
> >they can to get every advantage while Intel is still trying to recover 
> >their balance.
> Having IOMMU docs could have a very positive benefit for things like ATA
> on amd64.  However, I can't even begin to evaluate what that benefit
> might be until docs become available.


what docs do you want?

-- David  (obrien at

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