> On Jul 6, 2017, at 13:08, Dave Airlie <airl...@gmail.com> wrote:
> 
> On 7 July 2017 at 05:07, Matt Arsenault <arse...@gmail.com> wrote:
>> 
>>> On Jul 5, 2017, at 19:09, Dave Airlie <airl...@gmail.com> wrote:
>>> 
>>> From: Dave Airlie <airl...@redhat.com>
>>> 
>>> Use family, but only set xnack+ for gfx9.
>>> 
>> 
>> The driver shouldn’t be explicitly setting this. This should be set as part 
>> of the subtarget chosen
> 
> Well I expect Marek knows more (I'm just aligning the drivers).
> 
> If I had to guess, it's probably because Carrizo sets xnack in the
> subtarget but we don't want to use it.
> 
> Dave.

This is the problematic part, if you explicitly disable a subtarget feature 
when it is set in the subtarget’s feature list, it for some reason disables all 
of the features in the subtarget
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