On 2018-06-25 03:56 AM, zhoucm1 wrote: > one question to you: > > Did you consider the case that GPU_PAGE_SIZE > CPU_PAGE_SIZE? That is never the case: AMDGPU_GPU_PAGE_SIZE is always 4096, and PAGE_SIZE is always >= 4096 (an integer multiple of it). -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer