[Intel-gfx] [PATCH 1/2] drm/i915: skip the first 4k of stolen memory on everything >= gen8
Paulo Zanoni
paulo.r.zanoni at intel.com
Tue Dec 13 20:01:03 UTC 2016
Em Ter, 2016-12-13 às 17:57 -0200, Paulo Zanoni escreveu:
> BSpec got updated and this workaround is now listed as standard
> required programming for all subsequent projects.
>
Cc: stable at vger.kernel.org
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
> drivers/gpu/drm/i915/i915_gem_stolen.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c
> b/drivers/gpu/drm/i915/i915_gem_stolen.c
> index efc0e74..b1c8897 100644
> --- a/drivers/gpu/drm/i915/i915_gem_stolen.c
> +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
> @@ -55,10 +55,9 @@ int i915_gem_stolen_insert_node_in_range(struct
> drm_i915_private *dev_priv,
> return -ENODEV;
>
> /* See the comment at the drm_mm_init() call for more about
> this check.
> - * WaSkipStolenMemoryFirstPage:bdw,chv,kbl (incomplete)
> + * WaSkipStolenMemoryFirstPage:bdw+ (incomplete)
> */
> - if (start < 4096 && (IS_GEN8(dev_priv) ||
> - IS_KBL_REVID(dev_priv, 0,
> KBL_REVID_A0)))
> + if (start < 4096 && INTEL_GEN(dev_priv) >= 8)
> start = 4096;
>
> mutex_lock(&dev_priv->mm.stolen_lock);
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