gt;
>> Cheers,
>> Jerome
>
> Also it might be that you can't do write combining on your platform,
> which would be a major drawback as it's assume by radeon userspace.
> I would need to check the pcie specification, but write combining is
> probably not mandatory
nto user process mapping ? ie do you have
> something like Intel PAT or something like MTRR or something else.
>
> In other word, can you map into process address space a region of
> io memory (GPU VRAM in this case) and mark it as uncached so that
> none of the access to it goes thro
