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

From: David O'Brien <obrien_at_freebsd.org>
Date: Tue, 14 Dec 2004 09:23:31 -0800
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.

Beyond 

http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_739_9004,00.html
http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_739_9003,00.html
http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_739_7044,00.html

what docs do you want?

-- 
-- David  (obrien_at_FreeBSD.org)
Received on Tue Dec 14 2004 - 17:23:51 UTC