Messages in this thread | | | Date | Fri, 14 May 2010 16:20:45 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [Patch 1/1] x86 pci: Add option to not assign BAR's if not already assigned |
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On 05/14/2010 03:47 PM, Jesse Barnes wrote: > > Wow and they're using cards that want to use I/O space? Funky. It's > too late to get this into 2.6.34, but that can't be what you were > expecting... I don't see a problem with getting something like this in > for 2.6.35. >
Most cards on the market provide I/O BARs as a convenience to legacy BIOSes; they don't need the I/O BAR functionality from inside a full-featured OS. There are a few, key, exceptions, mainly in the form of legacy-interface devices like UARTs and VGA (note that VGA has its own routing bits and is therefore unaffected by this problem.)
-hpa
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