[Intel-gfx] [PATCH v1 3/4] drm/i915:bxt: Enable Pooled EU support

[Mika Kuoppala]

Chris Wilson <chris at chris-wilson.co.uk> writes:

> On Fri, Jul 17, 2015 at 05:08:53PM +0100, Arun Siluvery wrote:
>> This mode allows to assign EUs to pools.
>> The command to enable this mode is sent in auxiliary golden context batch
>> as this is only issued once with each context initialization. Thanks to
>> Mika for the preliminary review.
>
> A quick explanation for why this has to be in the kernel would be nice.
> Privileged instruction?
>

The pooled mode is global. Once set, it has to stay same
across all contexts until subsequent fw reset.

-Mika

> Not fond of the split between this and patch 4. Patch 4 intoduces one
> feature flag that looks different to the one we use here to enable
> support.
> -Chris
>
> -- 
> Chris Wilson, Intel Open Source Technology Centre
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