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SubjectRe: [Patch 1/1] x86 pci: Add option to not assign BAR's if not already assigned


H. Peter Anvin wrote:
> On 05/14/2010 03:34 PM, Mike Travis wrote:
>> It seems that BIOS changes are much more difficult. The real solution
>> to this problem is for Card Vendors to not request I/O Bars if they
>> won't be using them. But that's the hardest option of all to accomplish.
>>
>
> That is a non-option. Any device which may have to be a boot or console
> device in a legacy system pretty much needs them.
>
> -hpa

Yes, that's true. We're somewhat fortunate in that our Legacy I/O
devices are confined to those on the first blade, and all of these
other devices are on other blades (PCI segments 1+).

But you're right, unless the card vendor supplied some kind of strapping
option, or something similar, it won't know it's in a UV system or not.

Thanks,
Mike


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