sna: Restore CPU domain for vmapped buffers when reusing

For a vmapped upload buffer, we need to notify the kernel (and thereby
the GPU) to invalidate the sampler and flush its caches when we reuse an
idle buffer.

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

src/sna/kgem.c

@@ -3600,6 +3600,10 @@ struct kgem_bo *kgem_create_buffer(struct kgem *kgem,
 			offset = 0;
 			bo->used = size;
 			list_move(&bo->base.list, &kgem->active_partials);
+
+			if (bo->base.vmap)
+				kgem_bo_sync__cpu(kgem, &bo->base);
+
 			goto done;
 		} while (kgem_retire(kgem));
 	}