gen6_ppgtt_unpin 1394 drivers/gpu/drm/i915/gt/intel_ringbuffer.c 		gen6_ppgtt_unpin(i915_vm_to_ppgtt(vm));
gen6_ppgtt_unpin  581 drivers/gpu/drm/i915/i915_gem_gtt.h void gen6_ppgtt_unpin(struct i915_ppgtt *base);