On Mon, Jun 25, 2018 at 9:33 AM, Zhou, David(ChunMing) <David1.Zhou at amd.com> wrote: > 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. It's still 4k pages, but you can tweak the fragment size to make a TLB entry cover multiple pages. Alex > > 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 > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx >
