[Intel-gfx] [PATCH] drm/i915/gem: Prevent using pgprot_writecombine() if PAT is not supported

[Matthew Auld]

On Wed, 19 Aug 2020 at 21:32, Chris Wilson <chris at chris-wilson.co.uk> wrote:
>
> Let's not try and use PAT attributes for I915_MAP_WC is the CPU doesn't
> support PAT.
>
> Fixes: 6056e50033d9 ("drm/i915/gem: Support discontiguous lmem object maps")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: <stable at vger.kernel.org> # v5.6+
Reviewed-by: Matthew Auld <matthew.auld at intel.com>