Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Reported regressions from 2.6.24)

[Yinghai Lu]

On Sat, Mar 22, 2008 at 2:59 PM, H. Peter Anvin <hpa@xxxxxxxxxx> wrote:
> Linus Torvalds wrote:
>  >
>  > Ingo/Thomas - should ioremap*() perhaps take "resource_size_t" or a "u64"
>  > for the address (and then "__ioremap()" should probably take a PFN, not a
>  > physical address, and that one can remain just a "unsigned long"?)
>  >
>
>  resource_size_t seems to make sense here.  In the case when we have
>  64-bit resources but no PAE support we should error our when the
>  resource is out of range rather than silently fail.
>
>
>  > Has anybody ever had a working 64-bit BAR on x86? Ivan? Maybe I'm missing
>  > something..
>
>  64-bit BAR, certainly.  64-bit BAR with a value beyond 4 GB I would find
>  questionable at best... I suspect the answer is "no".
>
Opteron system with coprocessor on socket or HTX slot. will use 64bit
BAR above 4g and size is more than 4g too.

YH
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