On Thursday, July 27th, 2023 at 14:01, Christian König <christian.koenig@xxxxxxx> wrote: > > We do need patches to stop trying to infer the node type from the minor > > in libdrm, though. Emil has suggested using sysfs, which we already do > > in a few places in libdrm. > > That sounds like a really good idea to me as well. > > But what do we do with DRM_MAX_MINOR? Change it or keep it and say apps > should use drmGetDevices2() like Emil suggested? DRM_MAX_MINOR has been bumped to 64 now. With the new minor allocation scheme, DRM_MAX_MINOR is meaningless because there is no "max minor per type" concept anymore: the minor no longer contains the type. So I'd suggest leaving it as-is (so that old apps still continue to work on systems with < 64 devices like they do today) and mark it as deprecated.