diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index b1a33fe95ab3..710c2bef9ebf 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -5054,6 +5054,34 @@ void i915_gem_load_cleanup(struct drm_device *dev) kmem_cache_destroy(dev_priv->objects); } +int i915_gem_freeze_late(struct drm_i915_private *dev_priv) +{ + struct drm_i915_gem_object *obj; + + /* Called just before we write the hibernation image. + * + * We need to update the domain tracking to reflect that the CPU + * will be accessing all the pages to create and restore from the + * hibernation, and so upon restoration those pages will be in the + * CPU domain. + * + * To make sure the hibernation image contains the latest state, + * we update that state just before writing out the image. + */ + + list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) { + obj->base.read_domains = I915_GEM_DOMAIN_CPU; + obj->base.write_domain = I915_GEM_DOMAIN_CPU; + } + + list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { + obj->base.read_domains = I915_GEM_DOMAIN_CPU; + obj->base.write_domain = I915_GEM_DOMAIN_CPU; + } + + return 0; +} + void i915_gem_release(struct drm_device *dev, struct drm_file *file) { struct drm_i915_file_private *file_priv = file->driver_priv; |