drm/i915: Allow relocation deltas outside of target bo

Userspace has a legitimate requirement to use a delta that points to
outside of the target bo, and so we need to enable this. (As this is an
abi break, albeit a relaxation of the current restrictions, mark the change
with a new flag.)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index ffa2196eb3b9..51150692af2d 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -772,6 +772,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
         case I915_PARAM_HAS_EXEC_CONSTANTS:
                 value = INTEL_INFO(dev)->gen >= 4;
                 break;
+        case I915_PARAM_HAS_RELAXED_DELTA:
+                value = 1;
+                break;
         default:
                 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
                                  param->param);