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[3/3] drm/i915: WARN if the bios reserved range is bigger than stolen size

Message ID 1372838878-11153-3-git-send-email-daniel.vetter@ffwll.ch (mailing list archive)
State New, archived
Headers show

Commit Message

Daniel Vetter July 3, 2013, 8:07 a.m. UTC 
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/i915_gem_stolen.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Chris Wilson July 3, 2013, 8:51 a.m. UTC | #1 
WARN and return or else we create an invalid stolen mm.
-Chris
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 0f8cf62..51bc8bd 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -201,6 +201,8 @@  int i915_gem_init_stolen(struct drm_device *dev)
 	if (IS_VALLEYVIEW(dev))
 		bios_reserved = 1024*1024; /* top 1M on VLV/BYT */
 
+	WARN_ON(bios_reserved > dev_priv->gtt.stolen_size);
+
 	/* Basic memrange allocator for stolen space */
 	drm_mm_init(&dev_priv->mm.stolen, 0, dev_priv->gtt.stolen_size -
 		    bios_reserved);