PCI resources above 4GB

[Steven Newbury]

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On 15/04/12 18:25, Steven Newbury wrote:
> On 15/04/12 12:37, Steven Newbury wrote:
>> On 15/04/12 11:20, Steven Newbury wrote:
>>> On 14/04/12 21:48, Yinghai Lu wrote:
> 
> [snip]
> 
>>>> On Sat, Apr 14, 2012 at 12:21 PM, Steven Newbury
> 
>>>>>> 
>>>>>> pci 0000:03:08.0: BAR 15: can't assign mem pref (size 
>>>>>> 0x18000000)
>>>>> Ah! Not enough space for the bridge window!:(
>>>>> 
> 
>>>> please append pci=norom ...
> 
>>> That worked.  Except of course the radeon driver can't POST the
>>>  card without the ROM! :-P
>> Can the ROM resource be mapped above 4G?
> I didn't really think that through, obviously it can't because
> it's not on a 64-bit capable bridge.  I wonder though, could it be
> shadowed then disabled early before the IOMEM?
I see there's "#if 0"'d helper functions for exactly that in rom.c.
They've been disabled since 2007!
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