current amdgpu driver indeed always set GPU PAGE SIZE is 4096. In fact, our gpu supports bigger page size like 64KB, just we don't use it. I remeber previous amdsoc(old android kernel driver) used 64KB. correct me if I'm wrong. send from Smartisan Pro Michel Dé??zer <michel at daenzer.net> äº? 2018å¹´6æ??25æ?¥ ä¸?å??5:10å??é??ï¼? 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20180625/7d234265/attachment.html>