[Intel-gfx] [PATCH] drm/i915: Remove secure batch buffer flag SNB+
ben at bwidawsk.net
Wed Oct 5 16:54:52 PDT 2011
On Oct 5, 2011, at 2:26 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On Wed, 5 Oct 2011 13:01:56 -0700, Ben Widawsky <ben at bwidawsk.net> wrote:
>> Docs say that the secure batchbuffer field for > SNB B0 (products that
>> actually shipped) should be 0 when not using PPGTT. I'd guess this has
>> no positive or negative effect, but is just here to jive with the docs.
> How explicit is the warning? Enough to allow arbitrary writes into the
> MMIO space?
the windows driver does this from what we hear. not sure if that's good or bad though.
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