There are few questions regarding GTT and PPGTT related to h264 encoder. We are using libdrm 2.4.74 and intel-vaapi-driver and libva to encode YUV into h264. 1. By default intel-vaapi-driver uses GTT or PPGTT address space? We are using baytrail series gpu which is 7th generation.. 2. Will it affect encoded output if I pass i915.enable_ppgtt=0 to linux kernel commandline ?