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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2009-09-22 18:46:17 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2009-09-23 01:10:39 +0100 |
| commit | ab18282d58ce67ee5cd720d99a91c1a2bbf3e693 (patch) | |
| tree | c6463246f1c90f93dfee5b309645c7627fd8cc0e /drivers/gpu/drm | |
| parent | drm/i915: Track purged state. (diff) | |
| download | linux-dev-ab18282d58ce67ee5cd720d99a91c1a2bbf3e693.tar.xz linux-dev-ab18282d58ce67ee5cd720d99a91c1a2bbf3e693.zip | |
drm/i915: Warn before mmaping a purgeable buffer.
Only allow the user to mmap buffers that have not been marked as
purgeable.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index f4f714e39b7b..4755ba41bfef 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1431,6 +1431,14 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, obj_priv = obj->driver_private; + if (obj_priv->madv != I915_MADV_WILLNEED) { + DRM_ERROR("Attempting to mmap a purgeable buffer\n"); + drm_gem_object_unreference(obj); + mutex_unlock(&dev->struct_mutex); + return -EINVAL; + } + + if (!obj_priv->mmap_offset) { ret = i915_gem_create_mmap_offset(obj); if (ret) { |