Attachment 128439 Details for Bug 94605 – Possible fix, patch 1.

[patch] Possible fix, patch 1.

0001-drm-i915-skip-the-first-4k-of-stolen-memory-on-every.patch (text/plain), 1.22 KB, created by Paulo Zanoni on 2016-12-12 20:45:48 UTC

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Creator: Paulo Zanoni

Created: 2016-12-12 20:45:48 UTC

Size: 1.22 KB

patch

obsolete

>From df6e5778c41549d320b66eae32979a6fab1b9c72 Mon Sep 17 00:00:00 2001
>From: Paulo Zanoni <paulo.r.zanoni@intel.com>
>Date: Mon, 12 Dec 2016 17:59:01 -0200
>Subject: [PATCH 1/2] drm/i915: skip the first 4k of stolen memory on
> everything >= gen8
>
>BSpec got updated and this workaround is now listed as standard
>required programming for all subsequent projects.
>
>Signed-off-by: Paulo Zanoni <paulo.r.zanoni@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);
>-- 
>2.7.4
>

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Attachments on bug 94605: 122395 | 123549 | 123550 | 126597 | 126598 | 126599 | 128001 | 128027 | 128357 | 128373 | 128413 | 128439 | 128440

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