VM_CLASS_PPGTT 1439 drivers/gpu/drm/i915/i915_gem_gtt.c i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT); VM_CLASS_PPGTT 70 drivers/gpu/drm/i915/selftests/mock_gtt.c i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);